centerboard sailboat

Centerboard (Swing Keel) vs. Fixed Keel: Pros and Cons

Picking the right sailboat keel takes some understanding of the pros and cons of each. To help you out, I'll list the pros and cons of fixed vs. swing keels on sailboats in this article.

Fixed keels offer better performance than swing keels and centerboards, since they are more comfortable and faster. They require less maintenance. However, swing keels offer a low draft, and are less prone to damage when running aground. Swing keels can also be trailered, making them easier to transport.

Fixed Keels: Pros vs. Cons

Swing Keels: Pros vs. Cons

Let's see what's hidden under these claims.

On this page:

The difference between fixed, swing, and centerboard keels, pros of fixed keels, cons of fixed keels, pros of swing keels, cons of swing keels, swing keel or fixed keel: which one is for you.

Just to make sure we all know what is being talked about, let's first briefly discuss the terms.

• Fixed keels are immovable and part of the structure of the hull
• Swing keels are on a hinge, allowing you to change the angle
• Centerboard keels are a board that you can lower through a slit in the hull

Brief explanation of fixed keels

A fixed keel is just what it sounds like. It's a keel that stays in its place and is immovable.

No matter its size, shape, or weight, it is a keel that doesn't move relative to the boat. It is also the most traditional one you will encounter.

Brief explanation of swing keels

A swing keel is one that has a variable position. Meaning you can change its angle, you can retract it to the boat's hull, sometimes you can take it away completely.

A typical swing keel will hang on a hinge of sorts while being attached to the boat with a line, a cable, or anything that will enable you to pull it up.

These too come in all shapes and sizes, though they are usually lighter, unweighted.

More detailed look at swing keels: For a detailed explanation of swing keels (also called lifting keels), I recommend reading Shawn's detailed article explaining the swing keel's properties, advantages and disadvantages using clear diagrams and examples.

Brief explanation of centerboard keels

To make things a bit more interesting, let's add another one. Centerboard keels are often being put in the same category as swing keels, but that is not always the case. But since there is a lot of mix-up in terminology regarding this one, I will put them in the same category too.

Not that I'd want to confuse you, but if I go by the correct terms, you might come across different ones when looking up your desired boat's stats.

An example of a typical centerboard would be a keel you see on small sailing dinghies - a board that goes into a slit in the hull's bottom and can be taken out completely, depending on your needs.

Now to help you with your decision - this isn't a matter of better or worse. While fixed keels are kind of the standard, and tend to offer the best performance and convenience, the need for those with variable depth arose from the need for less draft.

Because performance and convenience do nothing for you if your boat runs aground and can't move.

Understanding Keel Design Fundamentals in 10 minutes

There are too many keel types to get into in this article. For a more detailed explanation of keel design fundamentals, I recommend you go through our Illustrated Guide to Sailboat Keel Types . It also contains a full list of the most common keel designs and their properties . Simply skimming it will help you understand the basics in ten minutes or less. Get the full picture on keel design

Fixed keels are more durable

The first point to mention here surely is durability. A fixed keel has no moving parts, so less chance of something breaking, less need for maintenance, and less hassle with mechanical parts.

This might not seem like much of a plus to many, but spend a few weeks on a sailboat, or plan a more ambitious journey such as an ocean crossing and you will find that maintenance is a big part of it all. And you will be thankful for every bit of the boat that doesn't require much of it and can take care of itself.

Fixed keels have a fixed draft

Another advantage is that you have a fixed draft to think about, no need to lift keels, or calculate where you can go - so your sail will be a bit more stress-free. In a way.

Fixed keels are more stable

The biggest point of them all though is performance. Fixed keels are almost always weighted, they offer good counterbalance to heeling and can help you with both sailing upwind and your boat's stability and a smoother ride.

That is why for most long-distance cruisers or racing boats, a fixed keel will likely be the weapon of choice.

But the above point is also relative since there are weighted swing keels - more on that later.

More prone to damage in shallows

What you got is what you got. If your draft is 10 feet, that is how deep you can run before risking damage, end of story. So you are automatically disqualified from entering certain places.

I personally don't see that as an issue but that is mostly owed to where I sail. If I spent more time on lakes or shallow waters, I might rethink my preferences. I've heard Florida tends to be quite depthless.

All the bays that are off-limits for a fixed keel, or anchorages where you pray you won't drag since there isn't much wiggle room … a lifting keel can take quite a lot of pressure off your hands.

If you do want to opt for a fixed keel, take a look at full keels instead of the more popular modern fin keel designs. Surprisingly, the more stable full keel design provides equal stability and durability at a lower draft . William took a very close look at the advantages of the full keel design and has written an excellent article that will run you through each of the full keel's specific benefits.

Fixed keels will damage when running aground

If you do run aground, chances are you will damage your boat. Freeing yourself from running aground is a lot easier with a swing keel. Sometimes you'll have no option but to wait until the tide rises. Not even another boat can drag a well dug-in fixed keel.

Swing keels offer very low drafts

The obvious advantage is the fact your draft will go to a minimum. The numbers depend on the specific model, some keels can be retracted more than others, but having the versatility pays off in many locations.

Lake sailors will appreciate this. So will people who happen to be in naturally shallow areas. There are marinas unsuitable for deep draft sailboats and having the option to change your draft can come in handy in some places.

They are less prone to damage when running aground

And if you do happen to run aground, it doesn't have to be an issue. The swing keel can simply swing as much as needed and you can slide over the bump. More or less. Having a negotiable draft would have saved many sailors annoying and expensive repairs.

They are easy to debeach

And in case you do get beached, getting out of such a situation is easier. Sometimes it can be as swift as lifting the keel and motoring away.

Swing keels can be trailered

Then there is the matter of getting the boat out of the water and trailering it. It can be as easy as popping the keel up, driving the boat on a towable trailer, and voila. Try doing that with a fixed keel. Transporting your boat will be much easier, which is why this design is popular with weekend sailors .

Easier to work on on-shore

Last and also least, since this isn't such a big deal, the ability to minimize the draft can come in handy when working on your boat once it is on shore. You might be able to reach your hull without ladders or scaffolding, making the access way more convenient.

Swing keels are slower and less stable

Putting the precise terminology aside, swing keels, centerboards or daggerboards, are less likely to be weighted. Thus you might end up with one that provides very little in terms of counterbalance and that reduces performance greatly.

Though as hinted before, there are weighted swing keels available. Some so heavy that you won't see a difference between them and fixed keels performance-wise.

For cruisers who don't care about performance that much, as long as they get to their destination, this won't matter. But if you care about speed, well, there is a reason why you won't see many swing keel racing boats.

They require a lot more maintenance

The biggest one though is maintenance. This is such a big part of having a swing keel boat that there are manufacturers who will prompt you to check the keel before every use. And that can get a bit daunting.

There is the line used for pulling the keel up, a winch of some sort (though you can do this by hand on smaller boats), the hinges, and the means of attaching everything together, whatever the system. All of this requires regular maintenance, or your keel might snap of (it happens).

As is usual, it all depends on the way you use your boat. Some boat designs seem nonsensical to many, but there is usually a good reason why they came into existence. A swing keel is no different.

If made to choose between a swing and fixed keel, my choice would be a fixed keel any day of the week, but that is determined by my preferences and where I sail the most (as well as my love for uncompromised performance and unreasonably high fear of capsizing - which is more likely with an unweighted swing keel than one that runs deep and stays there permanently).

Lake sailors, those who find themselves in shallows, or those who like to park their boats on beaches every now and then are better off with a swing keel. Those who know they can't avoid the occasional touchdown, perhaps simply because they sail in unpredictable waters, will probably do well to choose this design too. If you trailer your boat often, have a daysailor that you want to back into your garage after a day on the water, the choice is quite clear as well.`

Helping you decide on the best keel design

There are dozens of keel designs out there, and each type serves a different purpose and excels under different conditions. To understand which keel type is best for your situation , I recommend you read our Illustrated Guide to Sailboat Keel Types , which contains the fundamentals of keel design and an overview for each keel type's characteristics (including diagrams). It will help you understand which keel designs to consider in ten minutes or less.

There are many sailboats to choose from on both sides of the camp and if you are looking for people's experiences, you are in luck - this is one of the rare topics that doesn't divide sailors, so asking a question in an online forum won't bring an armada of fighters for this or that side - rather a bunch of helpful folks.

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You may also like, sailboat keel types: illustrated guide (bilge, fin, full).

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What’s the deal with Centerboards?

Most of you who have followed our journey for some time are familiar with our somewhat infamous centerboard issue, where we ran aground in the Illinois river in 8′ of water when our boat should only draw 4′ .  This was the most dramatic and expensive example of the issues we’ve had with the centerboard thus far, but that’s not to say it’s been the only trouble our centerboard has caused us.

In this week’s video, This Little Thing could SINK our Boat , we’re highlighting another pain point and some of the additional maintenance that comes along with having a pivoting centerboard. We’d like to take this opportunity to talk a little bit about the pros and cons of the centerboard system and shed some light on how we’ve been using it with real life examples.

Sailors love to talk shop. It seems everyone has an opinion when it comes to boats, and if you’re not too careful, it can lead lead to hours upon hours of enjoyable and sometimes educational discussion. Invariably anytime we get beyond the general pleasantries of “She’s a beaut!” or “What’s the length?” we know with more and more certainty that we’re talking with a sailor. As the questions get more specific e.g. “How much fuel do you carry?” or “How tall is the mast?” we will eventually hit this question: “What’s the draft?”

Up until this point, it’s only a Q&A session, but as soon as we divulge the boat has a centerboard — and that with the board up we draw between 4-4.5′ but when it’s down closer to 8′ — the discussion will turn one of three ways:

• The questioner wasn’t quite prepared for that answer and is dumbstruck because they didn’t know as much about boats as they thought they did, and were unaware of the centerboard concept or are unaware a boat of our size could have a centerboard.
• The questioner’s face lights up with a twinkle in their eye and responds with something like: “A perfect Bahamas boat, nice!”
• The questioner’s face scrunches up with terror in their eyes: “Why on god’s green earth would you want to maintain a system like that!”

And after three years of owning, maintaining and traveling aboard a boat with a centerboard, we’ve been in each of these 3 camps at one point or another. Let’s dive in and tackle each point of view.

What is a centerboard on a sailboat?

A centerboard is a retractable appendage that pivots in and out of a slot (centerboard trunk) in the hull/keel of a sailboat. Having the ability to raise and lower the centerboard allows the the boat to operate in shallow waters when lifted, while maintaining good upwind sailing characteristics with the centerboard down. Similarly, lifting the centerboard reduces the wetted surface area, resulting in lower drag while sailing downwind. This combination of characteristics makes it possible to build a safe, seaworthy boat, capable of easily sailing upwind off a lee shore, while still allowing the boat to tuck way up into shallow anchorages when necessary.

When first looking for our sailboat , weren’t specifically looking for a boat with a centerboard. It wasn’t on any “avoid ” list of ours either; it just wasn’t on our radar. So when we first saw the boat online and noticed it had a centerboard, we were pretty ambivalent about it.

Is that like a Swing Keel?

Many people have incorrectly referred to our boat as having a swing keel, and for good reason as they are quite similar on the surface. Before finding our boat, we were aware of other boats with swing keels (specifically Southerly Yachts  popularized by “ Distant Shores “) and some of their unique benefits. While the swing keel is similar on the surface, it’s an entirely different animal from our centerboard. They both feature large underwater wing-shaped appendages that pivot from underneath the boat to provide additional wetted surface area to reduce leeway and increase lift for sailing upwind. The main difference is that in a swing keel boat the pivoting appendage is actually the keel. In cruising boats, swing keels weigh several thousand pounds, while centerboards weigh a couple hundred. Thus, a swing keel also contains a large part of the boat’s ballast, so the position of the keel can have a substantial effect on the stability and motion of the boat. Additionally, when retracted all the way up into the hull, the boat can be left to dry out while sitting upright in the sand — pretty cool.

Distant Shores II, a Southerly 480

The flip side is this: In the fully retracted position, the keel needs somewhere to go — which takes up interior volume of the boat. Additionally, moving an extremely large and heavily ballasted keel up and down requires some serious mechanical gear, and unless the swing keel is lowered to some extent, there is nothing counteracting the force of the sails to prevent leeway and the boat will not sail to windward.

Whereas with our boat, in addition to the centerboard, we have a shoal draft keel (which actually doubles as a housing for the centerboard). Even without the centerboard down the boat will still sail to windward. Dropping the centerboard only serves to increase the pointing ability and windward performance. The centerboard does not contribute meaningfully to the ballast of the boat (as it weighs about 200lbs), so its effects on stability in the up or down position are muted. It is designed primarily as a hydrofoil to prevent leeway when sailing upwind and is significantly lighter than its swing keel cousin. Lastly, by retracting into the keel instead of all the way into the hull it does not have any negative effect on the interior volume of the boat.

What are the benefits of having a centerboard on a sailboat?

Besides increased upwind sailing performance, the major benefit of a boat with a centerboard is a shallow draft. For our needs navigating the inland river system, sailing the notoriously shallow Gulf of Mexico , and cruising Bahamaian waters, these are fantastic qualities to have in a boat.

The inland river system has a controlled depth of no less than 9′ in the channel from Chicago to Mobile, Alabama, but most of the channel is significantly deeper than that. However , s earching for marinas and anchorages for the night where you have to exit the channel means the depths start changing quickly. With our shoal draft keel we were able to sneak into a number of marinas with sub 5′ depth at their entrance or at the dock that would’ve been impossible in many other sailboats of our size. Even in Mobile we ran aground twice while moving through the marina to get to our dock.

In the Bahamas we find ourselves anchoring way up towards shore with the catamarans instead of much further out near the monohulls. Yet when it comes time to sail to windward, we’re able to drop the board and point much higher than we otherwise would’ve been able to with the shoal draft keel alone. This can shave miles off long passages and minimizes the number of tacks required in a tight channel.

Additionally, dropping the centerboard just a little bit can give us much better handling in tight quarters, as it prevents the bow from falling off downwind when trying to dock in strong crosswinds.

This all sounds pretty good, right? Why would you not want a boat with a centerboard?

What are the issues with centerboards?

With all the apparent benefits, you’d think the centerboard would be a no-brainer. And if you’re purely concerned with performance, then absolutely, it is. However, the centerboard represents an added layer of complexity that just isn’t absolutely necessary for the operation of the boat. Along with this added complexity comes additional maintenance to ensure the system continues operating normally, and even then, when everything is operating correctly, the maintenance itself can create some stressful situations. Below are a few of the negatives of having a centerboard we’ve discovered so far:

General Maintenance

Our centerboard is raised and lowered via a control line, or centerboard pennant. The line is always underwater inside the centerboard trunk, and is incredibly difficult to inspect. The line exits the boat below the waterline meaning we have an unprotected thru-hull without a seacock to close, should there be a leak. The through-hull is connected to a hose and the hose connects to a conduit in the mast that rises well above the waterline.

The centerboard line runs through this conduit and then exits the mast through a sheave at the deck level. It then runs through a turning block and clutch/winch to lock it off. Each of these items require some level of maintenance and/or at least inspection on a regular basis. These are all fairly simple parts, and the system is quite well-designed. However you can probably already imagine some of the issues…

Stepping & unstepping the mast is more difficult

Because the line runs through the mast, stepping and unstepping the mast requires a few more steps to ensure everything goes smoothly. When unstepping our mast, we need to temporarily slacken the centerboard pennant to allow the mast to be raised out of the boat. To ensure we can run the line back through the mast we need to run a messenger line in the mast to be able to retrieve it again when re-stepping.

When re-stepping the mast, extra care needs to be taken to ensure the mast doesn’t get hung up on the centerboard pennant or the conduit it runs through. We’ve heard of other boats stepping their mast only to realize later that they pinched their centerboard control line.

Naturally (or accidentally) slackening the centerboard pennant allows the centerboard to drop, increasing our draft to 8′, unless it’s secured in some other way. We did this at the start of our river trip by securing a line athwartship from each of the midship cleats to act as a set of suspenders to keep the centerboard pinned up inside the trunk. Unfortunately this wasn’t tight enough and slipped off the centerboard allowing it to drop into the fully-down position. This set us back a few days as we fabricated a much stronger system to secure the centerboard line using an exit sheave at the mast partners.

The centerboard trunk is difficult to clean & paint

While our boat was hauled out, we repainted the bottom with CopperCoat . However we were unable to paint the centerboard or the trunk with the same. Had we known better, we would’ve pulled the centerboard immediately after hoisting the boat out of the water with the travel lift. But since it was our first time hauling the boat for storage, we didn’t realize that once we were moved to the hydraulic trailer which the yard used to position boats, we would not be able to get enough height to drop the board and remove it.

We did hang in the slings over the weekend prior to splashing, which gave us time to get underneath the boat with the board down to clean the centerboard trunk and repaint the board and trunk with ablative bottom paint. But we couldn’t repaint with CopperCoat because of how long it needs to dry before being splashed.

The centerboard pivot point is difficult to inspect

The centerboard pivots on a large stainless steel hinge. This plate is bolted into the keel of the boat and has a large pin that runs through the centerboard allowing it to pivot around this point. There is also a heavy duty stainless eye on the backside of the centerboard that the pennant line connects to. Both of which are always submerged in water, and while they are stainless, stainless corrodes in environments lacking oxygen. So these parts need to be inspected on a regular basis, and this means removal of the entire board, which is easier said than done.

The centerboard can get stuck in the up or down position

The centerboard is designed to pivot up and down in the trunk with fairly small tolerances on either side. Any more space than what is needed to get the board out, and it will interfere with the flow of water over the hull, increasing water resistance and drag. Any extra space will also allow sea life to make its way up into the trunk.  Thankfully it’s very dark up in there, there isn’t much water flow carrying nutrients into that space, and we have been diligent about keeping it clean. While we haven’t run into this particular issue yet, we’ve heard of some boats that have had so much growth in the trunk that they can’t get the board to move.

While, we haven’t had our board stuck in the up position, but we have had the board stuck down. The centerboard is a hydrofoil, so the leading edge is a bit wider than the trailing edge, much like an airplane wing. And whereas dagger board trunks (where the board drops in vertically) can be contoured to follow the shape of the board almost exactly, our centerboard trunk is rectangular, as it needs to accomodate the width of the leading edge moving all the way through it. This means the trailing edge of the board (which is on the top when in the retracted position) leaves a lot of extra space between it and the trunk, creating a wedge shape… Maybe you can see where I’m going with this…

A perfect storm scenario can brew under just the right conditions. Imagine for a moment you are loosening the centerboard pennant line to drop the board down, but for one reason or another, the sideways pressure of the water against the board when sailing upwind, growth in the centerboard trunk, stops or slows the dropping motion of board — perhaps it even gets pushed back up slightly as the boat pitches forward and backward in a large wave. You, as the unsuspecting crewman, continue to slacken the line thinking the board is dropping, but in reality what is happening is the line comes to rest on the top of the board, and because of the wedge-shaped trailing edge, the line slips down ever so slightly between the board and the trunk, and gets trapped .  Once there it wedges in between the board and the trunk making it extremely difficult to move.

This has happened to us twice. The first was an easy fix, which occurred during a daysail after purchasing the boat. We could’ve easily addressed it without getting into the water, but it was hot, the water was clear, and despite being warned about this particular scenario, I didn’t have a good visualization of what was happening and wanted to see it for myself.

There is actually a built-in mediator of this problem which saved us considerable effort: A short section of exhaust hose with a diameter that almost exactly matches the width of the centerboard trunk serves as a conduit for the last 18″ of line of the centerboard. This prevents the slacked line from getting wedged in too tightly and allowed us to break it free with a tiny bit of force.

The second time however, was much worse, and is covered in detail in Episode 24 . We were in the Illinois Sanitary & Ship Canal, in incredibly disgusting water with no visibility, and because we hadn’t secured the centerboard line properly, the board unbeknownst to us dropped all the way down, and under zero tension actually hung forward of its pivot point. In this position, the geometry for pulling it back up is all out of whack.  With the protective hose completely out of the trunk, pulling the control line, only wedging it further in between the trunk and the centerboard.

So is a centerboard actually worth it?

While we’ve been both super happy we have a centerboard and a shallow draft, we have also been exasperated by the extra maintenance, sometimes wishing we had a “normal keel.” But at this point we’ve circled back around to mostly ambivalent.  The maintenance while sometimes stressful is all part of owning a boat and the benefit of having a shallow draft when needed are immeasurable.

In reality, we probably only use the centerboard 15-20% of the time we’re actually sailing. If you think about the benefits discussed above, it’s really only necessary in moderate upwind scenarios, which we often avoid anyway. It’s just way more comfortable sailing downwind! We’ve also found in light wind conditions the extra drag created by the centerboard outweighs the pointing ability it generates, so we leave the board up. To top it all off, when we’re not actually sailing (which is most of the time when the boat is at the dock, at anchor, or hauled out for storage) the centerboard is always in the retracted position. For the actual lifespan of the boat, the centerboard is in the down position much less than 10% of the time.

On more than one occasion I’ve thought that I’d rather have a keel full of lead where the centerboard trunk exists now. It would give us added stability 100% of the time, we’d have no additional maintenance, and we’d only miss out on the benefits 10% of the time. However that 10% of the time could potentially make all the difference if we really needed to get off a lee shore. Whenever we are using the board — i.e. upwind especially in a narrow channel or maneuvering under power in tight quarters — we’re often saying to each other “Thank goodness for the centerboard!”

In the end, as with everything on a boat, it’s a trade-off.  There’ll always be pros and cons of every design decision. There isn’t one right design for every boat or every boat owner. Overall, we’re happy with our Tartan37c  and would not pretend to know more than the S&S design team who dedicated their lives to designing these spectacular boats.

Let us know what you think!

Do you have any experience with a centerboard? Did we miss anything? We’d love your feedback.

This ONE LITTLE THING could SINK our Boat

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About the Author: Kirk

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21 comments.

We had a centerboard on our very first keelboat, a William Tripp designed Polaris 26. Sailing in Michigan on Lake St. Clair, it was a great feature as we could gunk-hole into all kinds of places. Our horror story was that we once forgot we had it down when sailing into a shallow bay and we touched and pivoted under a pretty brisk wind. That was enough to slightly torque and twist the centerboard foil such that it would only retract about 1/3 the way up before getting jammed in the trunk. We had to sail the rest of the season that way until we were hauled out for winter and the yard could bend it back flat. Our subsequent three boats have all been shoal draft versions, which opens up a whole ‘nother discussion of the merits of shoal keel versus deep keel on the same boat model. Fortunately, we switched our home port to Charlevoix 20 years ago, where sailing depths are almost never an issue on Lake Charlevoix/Lake Michigan/Lake Huron. As you said, everything is a compromise with sailboat design. We were glad we had the shoal draft when we delivered our current boat from Annapolis to Charlevoix last year. We draw 6′-6″ and we bottomed out three or four times in the Erie Canal (supposedly a 9′ controlling depth, but who’s counting?). The deep keel version of our boat draws 7′-6″, so we would have never made it back to the Great Lakes. We are eventually going to be bringing this boat back out to the Atlantic permanently when we retire and plan to cruise the Bahamas and the Caribbean, so even the 6’-6″ shoal draft is going to be less than ideal. But hey, if Delos can do it, hopefully we can. Best to you and Lauren.

Jeff W SV Échappé Jeanneau Sun Odyssey 54DS Charlevoix, MI

Thanks Jeff, 6’6″ is the shoal draft?! We were so thankful for our 4’6″ draft in the Abacos. We could anchor in so many great places!

Yeah as usual your videos and blogs are so helpfull to use on my tartan too, you guys are my teachers, when I bought the boat I had the problem with growth inside the trunk, I left the line loose by unexperience and in a sail trip it went down with the shocking waves, I didn’t know it happened and then on another short trip we ran aground because I didn’t know the keel was down. But after that it got cleaned and all works perfect, thanks!!!

Good to hear! Rest assured, if you’ve done it, we probably have as well!

I had many maintenance issues with the centerboard system on my T 37. I managed to drift into shoal water while anchored with the centerboard half down – a position I often used to reduce roll. This resulted in breaking the lower 3/4 of the centerboard off. I recovered it and on next haul out, epoxied it back together and reinstalled it. Next haul out, the SS pivot assembly had a problem in the flange that received the pin – had to be re-fabricated. A couple of years later (I went way too long without a haul out from this point) the bolts holding the pivot assembly became loose and I was unable to lower the centerboard as the pennant was the only thing keeping it in the boat. Sailing with it up didn’t seem problematic.

It all sounds pretty familiar. I think we have a love/hate relationship with ours. 😉

Hello and love your information, site, etc. Your trips are completely unique to me and the blogs and video are welcome adventures. Keep on cruising and writing. Please.

Centerboards: I was raised sailing all manner of boats with them. We had a 48 Alden yawl with a centerboard. I think it went down twice! We cruised Cape Cod, the US East Coast into the Keys, and Bahamas in that boat and all the reasons to have a board were apparent. I was a kid then and wondered why anyone would build a boat without a centerboard.

Then, I started racing and fell in love with deep draft. Our boat now is 32 feet long and draws 6 feet. Oh my, do we go to windward! We have raced a T37 (same handicap) and we out point him but he out foots us and usually finishes ahead. Cruising is not about hours of close hauled sailing. I get it now!

In our harbor and on the next mooring is the referenced T37 that I am coming to love. Pretty boat and shallow draft. Back to my youthful exuberance for a centerboard. If you guys find you way up to the Cape, I hope we see you. Look into Stage Harbor.

Norm Martin Averisera

Hi Norm, thank you for sharing your story. It’s interesting how some boats just reach out and speak to certain people. All the best!

I have a membership in a sailing club with a collection of Capri 22’s that are not all identical. We have weekly races with them, where you show up and draw boat names out of a hat. One of them has a shoal draft keel, it is always the least favorite draw. Typically, while you might be able to point the bow upwind, it’s moving sideways far more than they other boats (regular keel versions of the same boat). But every now and then the wind is just right, and she’ll clean up, just own every race, but this is rare, relies on just right wind (5-10 knots) and tide conditions that allow her to get speed without being pushed leeward. Downwind, she also has a slightly shorter mast (several others also have shorter masts), but still usually keeps up. Possibly an advantage, but not sure. A centerboard would clearly help her upwind in some conditions. But it’s often going to be hard to really see those conditions without head to head comparisons and if your not caring you can just start the engine.

Sounds about right. That shoal draft boat likely does well on downwind legs given there is less surface area under the water.

We’re definitely not the fastest boat to windward, but we’re not racing. There some shoal draft boats that simply can’t sail upwind at all when the wind picks up. They have too much windage and not enough leverage on the water. We will hit hull speed at 30 degrees apparent in 15 knots apparent wind, which I’m quite happy with 🙂 All the best!

A daggerboard is a centerboard, just as one is an integer and a whole number. If the daggerboard is off center it is a leeboard.

Is that so? I always heard it as a centerboard pivots and a daggerboard slides up and down. But I suppose your explanation makes sense!

You guy’s are such centerboard rookies, but then again, most sailors are. I cruise the extremely shallow waters of the Southeast coast of the US and have always sailed centerboard boats for over 40 years, In fact my present boat is a Presto 36, a 18,000 displacement, ketch rigged, true or pure centerboarder, designed in 1884 by Ralph Middleton Munroe. I have no external keel at all, except for a 9″ X 6″X 12′ long lead grounding shoe, designed for “taking the Ground upright”. My draft, board up is 2′-6″ and approx.. 5′-6″ ” board down. The board weights approx. 400 lbs. My centerboard pendant, a 3/8″ super synthetic line runs upwards from the aft end of the centerboard trunk, to the cabin top via 1-1/4″ SS tube and is attached when it exits the top of the cabin, to a simple 6 to 1 tackle to help raise and lower the board. My centerboard trunk runs almost the entire length of the main cabin and has a 2″ dia. hole in it’s aft end. That hole and a short length of broom handle are extremely helpful for for coaxing a resistant board into going down as needed. I have spent many days pleasantly aground on a convenient sand bar, for recreation or maintenance needs and many a night secure in the knowledge, that no matter how busy the surrounding water are, I’m freed from the worries of getting “run” down in the night. Incidentally, I oft use the board along with my mizzen in assisting in self-steering. Never needed any auto-pilot. Up wind, she’s a drag, but any other course, with her sheets eased, she simply can’t be caught..

My wife and I have a Bristol 35.5 with a centerboard. Our installation is much simpler than the one Tartan came up with – I was very surprised when I saw that yours comes up though your mast. Ours is on a wire winch on the cabin house that runs through sealed pipes over sheaves to the board. I’d say that the vast majority of the issues you’ve had with your board are due to that somewhat quirky design. That said, I’ve always loved the look of the Tartan, and you guys have definitely made fantastic improvements.

My wife and I thoroughly enjoy your channel and following your adventures. Keep them coming!

It is a bit of a quirky system, but running it through the mast is kind of a neat way to hide the control line, which needs to enter and exit the hull and deck. It does present some challenges, but it’s neat out of the box thinking. As you know everything on the boat is a tradeoff, and overall we’re extremely happy with the boat. Thank you for watching!

Hi, how confident are you with the centre board in heavy weather … blue water … hove-to? We are going to look at a 47′ sloop with one tomorrow. I love our current smaller steel boat with a full keel but who knows …

Hi Melissa, Tartan 37s have sailed in every ocean on the planet, there have been multiple circumnavigations. As long as we keep the boat properly maintained, I have confidence in it. I don’t know what type of boat you’re looking at or what type of sailing it was designed for, but I don’t think there is anything fundamentally wrong with a centerboard. Good luck!

We have a 79 Irwin 39 with shoal draft an centerboard, the pennant is mid deck and runs through the sole to cabin top” stripper pole” that is attached to the galley and also serves as handhold under way, the pivot is a SS pin that runs abeam and is puttied over, I need to remove this soon as there is a bit more play in this joint than I’m comfortable with, The boat is very tender and we are contemplating the best way to add ballast to the keel as it heels very quickly and carries a lot of sail. The centerboard isn’t very effective when she’s on her ear for limiting leeway losses . She draws 4’3″ up and 9’6″ down, I never thought about partially dropping to improve turning so am excited to try that when maneuvering around docks. I’m hoping adding some lead will make it less tender and will be pursuing this after haulout.

Peter, sounds like you’re at the beginning of a fun adventure learning more about your centerboard and how it can improve the handling of your boat. It was a fun learning journey for us, and we really began to respect the purpose and design of the CB.

I have a 1966 Morgan 34. The bronze centerboard has deteriatiated beyond repair. Especially in the hinge pin and pennant attachment area Draft board up 3 1/2 ft, board down about 7 ft. Bronze board is at least 250 lbs, about 5 ft long, and is a great template

1..Any guidance on where I can get a replacement , perhaps Foss Foam?

2. Is the weight important to proper deployment. Sure cranks hard..a challenge for an old fart to raise

Hi Capt Ron, sorry to hear of your CB woes. Unfortunately I don’t have any sources for replacement. Weight is important, the heavier the better, to an extent. You obviously want to be able to lift/lower it under your own power. At a minimum you need some weight at the bottom of the CB to prevent it from floating and get it to drop down and stay down while underway. But the more weight you can drop down there the better.

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Choosing a Centerboard or Fixed Keel Sailboat

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Centerboard or Fixed Keel?

You need to consider many different questions when deciding what kind of sailboat is best for you .

Depending on the general size range of the sailboats you may be interested in, you may need to choose between fixed-keel boats and centerboard (or swing keel or daggerboard) boats. This article will help you choose which is best for your needs.

As only a very general rule, most sailboats over 20-something feet have fixed keels. Most sailboats under 15 feet or so have centerboards. But there is a wide range of boats from 12 to about 25 feet with either a fixed keel or a centerboard. For example, in this photo, ​the boat on the left has a fixed keel, while the boat on the right, of about the same size, has a centerboard.

If you are shopping for a sailboat in this range, you should understand the differences between these fundamental types of keels.

Fixed Keel Sailboats

Virtually all large racing and cruising sailboats have a fixed keel. A keel is needed to keep the boat from being blown sideways at all points of sail except downwind. A keel also provides weight low under the water to lower the boat’s center of gravity below the waterline, which is needed so that the boat bobs back upright if knocked over by wind or waves.

Sailboats have many different types of fixed keels , such as full keels (see photo) and fin keels. If you decide a fixed keel boat is best for your sailing purposes, consider also which type keel best meets your needs.

Centerboard Sailboats

On centerboard sailboats, the centerboard functions like a keel to keep the boat from being blown sideways. (All sailboats need a keel of the board for this reason: the narrow, flat surface of the board or keel produces little drag when the boat moves forward but resists motion sideways.)

The centerboard usually hangs down below the hull from a pivot at one end. It can be raised by pulling a line that swings the centerboard up into a centerboard trunk along the center of the boat, as shown in the photo.

Some small boats, like a Sunfish, have a removable daggerboard rather than a centerboard. The daggerboard has the same function, but rather than swinging down, it is inserted like a blade down through a slot in the hull to protrude like a thin keel below the hull. A swing keel is another term used for a type of keel that like a centerboard can be raised.

A centerboard may or may not be weighted. If the centerboard is weighted, then it also provides weight low in the water, like a keel, to help keep the boat upright (although not as much weight as a fixed keel can supply). If the centerboard is not weighted, like the fiberglass centerboards of many small sailboats, then sailors must keep the boat upright by positioning their own weight on the upwind side of the boat. 

Benefits and Disadvantages of Fixed Keel and Centerboard Sailboats

Fixed keels and centerboards each have their own benefits but also disadvantages. When deciding what type of boat to buy, be sure you have considered these differences:

Advantages of a Fixed Keel:

• Provides the most ballast to resist capsizing and ensure recovery from a capsize
• More effective at preventing leeway (sideways movement of the boat)
• Crew do not have to position body weight to prevent capsizing (see photo)
• No centerboard moving parts to break or jam

Disadvantages of a Fixed Keel:

• With deeper displacement, the boat cannot enter shallow water
• The boat is heavier for its size (usually an issue only when trailering)
• With deeply fixed keels, the boat may not fit on a trailer at all (25 feet is typically the largest trailerable fixed keel sailboat) - requiring the inconvenience and expense of a boatyard for launching, haulout, and storage

Advantages of a Centerboard:

• The centerboard can be raised to decrease displacement to allow the boat into shallower water – and it should swing up and back if it hits the bottom when sailing with it down
• The centerboard can be raised for faster downwind sailing
• The centerboard can be partially raised if needed to provide better boat balance
• Most centerboard boats can be trailered and easily launched and hauled out on boat ramps (larger centerboard boats may require deeper ramps)

A popular trailerable centerboard sailboat is the MacGregor 26 , which with its water ballast has the advantages of centerboard boats but not all the disadvantages.

Disadvantages of a Centerboard:

• Provides no (unweighted board) or less (weighted board) ballast, compared to a fixed keel, to resist capsizing and ensure recovery from a capsize
• Less effective than a larger fixed keel at preventing leeway (sideways movement of the boat)
• The centerboard trunk takes up space in the boat’s cockpit or cabin
• The centerboard pivot and control line involve moving parts and can jam or break

Finally, some historic crafts have leeboards instead of centerboards; these boards, mounted outside the hull on both sides, can be pivoted down like a centerboard to resist leeward motion. And some sailboats have fixed keel-centerboard combinations, which provide ballast and prevent leeward motion even when the centerboard is up but also provide the option to attain less leeward motion sailing upwind when the board is down.e a centerboard to resist leeward motion. And some sailboats have fixed keel-centerboard combinations, which provide ballast and prevent leeward motion even when the centerboard is up but also provide the option to attain less leeward motion sailing upwind when the board is down.

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Centerboard VS Daggerboard The Differences Explained

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Sailing life entails many words that at first make no sense; in this article, I will explain the difference between two types of underwater foils, centerboards and daggerboards.

On a sailboat, the difference between a daggerboard and a centerboard is how they are moved into position. A daggerboard is lifted and raised vertically (up and down) through a slot in the hull; a centerboard, on the other hand, pivots or swings into place.

That was the short answer. There are many more commonalities and differences worth discussing, such as the differences in performance and what happens if your daggerboard hits a reef? Will it break your hull?

Keep reading to understand all you need to know about daggerboards and centerboards!

Table of Contents

Centerboard

The centerboard is mounted horizontally on a rotating bolt at the foremost part of the foil (keep reading to understand what a foil is). It folds into a comparatively much longer slot in the hull than a daggerboard.

A centerboard comes in many different shapes and sizes, it can be combined with an already existing keel, or it can be larger and be more of a stand-alone type.

How is a centerboard operated?

The centerboard is operated through a lifting line fastened at the end of the centerboard fin(board); this line is manipulated either by hand or by a winch and, once fully retracted, will be tied to a cleat.

Daggerboard

The daggerboard, on the other hand, is mounted vertically inside a sliding slot in the hull, it gets it name from the movement, much like the stabbing motion of a dagger.

The board is stopped from moving too far and falling out because the top part is wider than the lower part.

How is a daggerboard operated?

It is manipulated much like the centerboard, through a lifting line and a winch. But instead of being attached through a bolt and swung into position, it is lowered down into place.

What are the differences?

Performance.

Since the differences mainly lie in the way of deployment, there are not that many big difference, but some smaller once worth noticing are;

The daggerboard doesnt have to be either fully up or fully down; this means the sailor can adjust the depth and effects to his or her needs. To low and there will be unnecessary drag, to high and there will be too little lift and too much drift to windward.

On the other hand, the centerboard pivots into position and is only really efficient as a foil once fully deployed.

Reducing the draft of a boat is very important if you want to sail in very shallow waters such as the Bahamas or if you want to beach your cat.

What is beaching a cat?

Once retracted, there is also a decreased chance of getting stuck or tangled up in a fishing net or other semi-floating objects and sometimes hard to see.

On boats where the keel is the lowest point on the boat, the propeller will be protected, but on ships where the center or daggerboard is the lowest spot, then retracting it will make it vulnerable to damage from whales, fishing nets, or coral. You will also not be able to beach your cat since the weight of the ship will be loaded on top of your prop shaft and most certainly will break it.

Once the boards are in a fully lifted position, there is an argument to be made that the centerboard, which has a much larger slot, will have higher drag. This is true, but only if the slot is poorly design and not hydrodynamically smooth, causing underwater turbulence.

A well-designed centerboard should be able to reduce the amount of drag to the same as a daggerboard.

What are the similarities?

Both systems can be mounted in pairs and at an angle; this makes the boards work much as an airplane wing does. Once the water starts passing around it, it will create higher water speeds on the upper side, lowering the pressure and increasing lift.

This makes for less underwater surface, decreases drag, increases speed, and fuel efficiency.

One issue often discussed on forums and with boat people is that a centerboard is safer since if an underwater object hits it, it will fold back into its slot, and no damage will be done. This is true to a degree but worthy of some explanation.

Firstly this is mainly a theoretical argument since an object is not certain to hit the board from straight on; this means that the idea of folding is no longer possible. The next thing to understand is that daggerboards are made to break; this is a safety aspect and makes sure that the hulls stay intact and that the boat will stay afloat.

This is similar to modern mini keels on catamarans; they too are constructed to detach if hit hard enough, the keels fall off, but the hull stays intact.

Both systems offer a risk of getting stuck; some say this is a bigger issue with daggerboards, and they more often fail than the centerboard style. This is not something that I have been able to confirm through any data, and looking at the design of newer daggerboards; there is no real reason to think that this should be the case.

There are many different systems on a sailboat, and everything that can move will sooner or later stop moving due to rust or being filled up with salt and sand. So will too these boards; this means extra time for maintenance and extra money to be spent keeping the systems in good shape.

Compared to each other many would argue that the centerboard is a somewhat simpler system and that they need less maintenance; I would say it is more up to the specific design than whether or not it is a centerboard.

Catamarans and Monohulls

The basic function of a foil is the same whether you’re on a catamaran or a monohull, although some aspect is specific for a cat.

A catamaran will always have two boards; these can be used together or separately. Since a catamaran behaves very differently in big seas than a monohull, the use of foils, especially during heavy weather, is essential to understand if wanting to stay safe.

One situation when catamarans can capsize is while being pushed horizontally by a big breaking wave hitting it from the side. If both boards are down, this will decrease the possible sliding motion and therefore increase the likelihood of capsizing.

This is a complex issue and if you want to undestand capsizing in detail i suggest you read this article;

Why do catamarans capsize

Owner of CatamaranFreedom.com. A minimalist that has lived in a caravan in Sweden, 35ft Monohull in the Bahamas, and right now in his self-built Van. He just started the next adventure, to circumnavigate the world on a Catamaran!

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How to Build Rudders & Centerboards

by Captain James R. Watson

When the centerboard of my Searunner trimaran broke in the middle of a windy race around the Black Hole, the question I kept asking was “Why now, after working fine all of this time, and when we were leading the race?”

“Guess it just wore out” was my excuse to myself. This centerboard was built of laminated layers of plywood, resulting in a thickness of 2″. It was then covered with two layers of 6-oz woven fiberglass fabric. It was a deep and wide board with a lot of area, and like any rudder or centerboard on a boat that is sailed hard, it was exposed to a fair amount of stress.

The answer to “Why now – while leading the race?” could have been fate. But there is a more scientific answer. Extensive laboratory testing at Gougeon Brothers, Inc. defines why the centerboard failed. Understanding why can help us design and construct components that will perform more efficiently and last much longer.

The plywood centerboard did, in fact, wear out – or more accurately – it failed from rolling shear fatigue. Fatigue cracks in a material result from repeated (cyclic) stress. Fatigue is a reality of all structures and materials and eventually culminates in structural failure. Repeated loading and unloading or even worse, loading one way and then the other (reverse axial), rapidly reduces a material’s physical integrity and accelerates degradation. The higher the load is as a percentage of the material’s ultimate strength, the more rapid is the deterioration.

Some materials have a greater fatigue life than others. Ounce per ounce, wood is capable of operating at a much higher percentage of its ultimate stress level than most other materials. That is why such wonderfully efficient structures can be built with wood. However, plywood is not a good choice for cantilevered structures such as rudder blades and centerboards. This is because plywood is susceptible to rolling shear, shearing forces that roll the structural fibers across the grain. Plywood’s unidirectional wood fibers are laid in alternating layers, approximately half of them are oriented 90 degrees to the axis of the loads. Like a bundle of soda straws, which resist bending moments quite well one way, they simply lack cross-grain strength laterally and can roll against one another and fail under relatively low stress, especially in a cyclic environment. Therefore, when anticipated loads are primarily unidirectional, it is ideal to use a material with good unidirectional strength. Since only half of the plywood’s wood fiber is used to advantage, a plywood rudder blade or centerboard going from tack to tack (reverse axial loads) will fatigue much more rapidly than one built as described in this article.

If you were to look at the end of the board, say a fish’s view of a centerboard or rudder blade, you’d view its cross-section. A section that has a faired airfoil shape is preferred over one that is flat with parallel sides. This is because the airfoil shape produces lift when moving through the water, thereby counteracting the sideward forces exerted by the sail rig. A flat section produces less lift and at a great expense of drag, slowing the boat and making it more difficult to steer.

“Turn every other ripping end-for-end to neutralize the effects of any grain that does not run exactly parallel to the blank, and to reduce tendencies to twist. Rotate the rippings 90 degrees to expose the vertical grain and to permit easier shaping with a plane.

The selection of a proper camber and section can be a subject of great theoretical debate. One can become intimidated with technical terms such as thickness distribution, Reynolds number, boundary layer, and so on. These terms do relate to the subject, however, for the builder/sailor whose boat floats forlornly in need of a rudder blade the following will do just fine. In fact, the best designers and builders will be hard-pressed to do better.

An excellent choice for most craft is a realistically accurate and fair NACA (National Advisory Committee for Aeronautics) 0012 airfoil, where maximum board thickness is 12% of the fore/aft length (chord length). Maximum thickness is located about 30% of the chord length measured from the leading edge (see sketch). The dimensions used to establish a specific shape (called offsets) are given in the appendix of Abbott & Doenhoff’s The Theory of Wing Sections.  You’ll also find further information in my article  How to loft Airfoil Sections.

From offsets make a good drawing of half the section on transfer paper.

Western red cedar and redwood are good choices of wood to use for rudder blades and centerboards for boats up to 25 feet. Both of these woods bond very well are generally clear and straight-grained, have good dimensional stability, are easily worked and affordable. Cedar is just a little heavier than the foams used for rudders, is much stiffer, and has far greater shear strength values. On larger craft, a higher-density material like African mahogany is a better choice. Oak is not a good choice.

Buy flat-grained 2’x6″s or 2’x8″s, and then rip them to the designed board thickness. Turn every other ripping end-for-end to neutralize the effects of any grain that does not run exactly parallel to the blank, and to reduce tendencies to warp or twist (see sketch). Rotating the rippings 90 degrees to expose vertical grain will permit easier shaping with a plane. The last trick is to rip the end pieces of the nose and tail in half. Bonding with a couple of layers of glass tape between keeps the fine edge of the tail from splitting too easily and offers a precise centerline.

Bond the ripping with a slurry of epoxy and 404 High-Density filler. Plastic strips prevent inadvertent bonding to leveled sawhorses (see sketch). With both sawhorses leveled, you’re positive no twist exists in the laminated blank. Bar clamps should be snugged until excess glue squeezes from the joints. Over tightening only stresses joints and tends to squeeze all the adhesive from them. When the laminate is cured, a light planing to clean the surfaces is all that is needed before shaping begins.

Centerboards and rudder blades are often overlooked components that are vital to a boat’s performance.

First, tack the 1/8″-thick plywood template that describes the cross-section shape to the blank’s ends. This is sawn from the impression made when traced with the transfer paper you originally drew it on. The key to producing an accurate and symmetrical board is maintaining a systematic removal of material from one side, then from the other. To do this, mark the shape to be removed, stick to straight-line shapes (see sketch). Use a smoothing plane to remove the wood.

After planing to the guidelines on one side, flip the blank over and plane the same shape on the other side. The procedure is similar to producing a round shape from a square by first forming an octagon, and then flattening the resulting eight corners to produce a 16-sided shape and refining that until very minute flat surfaces exist. Fifty-grit sandpaper bonded with 3M brand feathering disc adhesive to a 1/2″-thick by 11’x4.5″-wide plywood sanding block is a good tool to use for fairing this out.

Now you should decide if the board needs reinforcement. Your board requires reinforcement if the chord thickness is at or below 4% of the unsupported span. The unsupported span of a daggerboard or centerboard is that measurement from where it exits the hull, to its tip when fully lowered. The unsupported span of the rudder blade is the distance from the rudder case to the tip. If it is a non-retracting blade, measure from the waterline to the tip. So, if the board extends 48″ below the bottom of the hull and is 2″ thick, .04″, it should be reinforced for strength and stiffness.

If the board needs reinforcement, graphite fibers are a good choice as the strain-to-failure values of wood and graphite fiber are quite similar, hence they enhance each other’s performance. The high-modulus qualities of the graphite fibers provide stiffness. The addition of graphite will efficiently increase stiffness and ultimate strength. Don’t be intimidated by the high-tech qualities of graphite fibers, they are easy to work with.

The amount of reinforcement needed is usually figured at 10% chord thickness. Using the same board for our example, the board is 2″ thick, then 10% equals .20″ total reinforcement, .10″ per side. Graphite fiber tows are .01″ thick, so 10 tows per side should give the necessary reinforcement to do the job.

The graphite fibers will be laid into a channel routed into the shaped centerboard.

The graphite fibers will be laid into a channel that is routed into the shaped board (see sketch). The specific depth of the channel is determined by the above rule. Make the channel a little deeper than what’s required (1/16″) so you won’t be sanding the graphite fibers.

The profile of the channel is similar on all boards. The centerline of the channel is usually located at the point of maximum chord thickness (about 30% from the leading edge). The widest point of the channel is where the board exits the hull when completely lowered. The channel width at this point should be about 16% of chord length. Toward the ends of the board, the width of the channel narrows by about one-third that of the widest dimension. Keeping this in mind, more graphite can be laid in that area, a little above and more below that point that exits the hull. Maintain a consistent channel depth throughout.

Take a one-inch-square stick to serve as a router guide. It’s best to bevel the edge of the channel to reduce stress concentration. A rabbet plane serves best for this task. A layer of 6-oz fiberglass cloth is laid in the channel first (this serves as an interface between the wood and graphite fiber), followed by the schedule of graphite. You can complete the entire bonding operation for a side in one session. Try to do the other side the next day. Finally, fair the reinforcement area with WEST SYSTEM brand epoxy and a low-density filler.

A layer of 6-oz woven-glass fabric should then be bonded to the faired board to improve the cross-grain strength and abrasion resistance. The radius of the leading edge should be about a 1% radius of the chord length, and may not permit the fiberglass fabric to lie flat around the radius. In that event, cut a strip of woven glass fabric on the bias (which will lie around a tighter radius) and bond it around the leading edge.

It is better to leave the trailing edge slightly squared rather than razor-sharp. This will cause less drag and the centerboard will be less vulnerable to damage. Flatten the trailing edge to 1/16 or 1/8 of an inch on small boards, and closer to 1/4 of an inch on larger boards.

Any board, no matter how stiff, will deflect. To prevent the axle hole that the centerboard pivots on from binding when deflection occurs, make the hole somewhat larger than the pin diameter. The perimeter of the axle hole should be thoroughly protected with fiberglass, as exposed end grain can absorb moisture.

To prevent the axle hole from binding when deflection occurs, make the hole a little larger than the pin diameter.

Abrasion of the axle against the axle hole dictates that you should bond fiberglass into the hole’s perimeter. To do that, wrap fiberglass tape around a waxed (use auto paste wax) metal rod that is about 10 to 15% larger in diameter than the actual axle pin. The hole should be heavily chamfered on each side, so when the wet layup is placed in the hole and the nuts tightened, the fiberglass is pressed by the large washers into the chamfers on both sides of the board (see sketch). The same procedure may be used on retractable rudder blades, but the tolerance between axle hole diameter and the diameter of the axle pin should be closer.

You can bond control lines for centerboards and rudders-in-place by wetting a slightly oversized hole (about 1.5″ to 2″ deep) with epoxy/404 High-Density filler mixture. It helps to mark the hole’s depth on the rope with vinyl electricians tape to serve as a guide. Then, after soaking that end of the rope to be bonded in epoxy for a minute or so, shove it in the full depth of the hole.

Centerboards and rudder blades are often overlooked components that are of vital importance to a boat’s performance. Built correctly, they will reliably operate with the efficiency of a fish’s fin, and you should note a measurable improvement in the quality of pointing and steering of your windship.

References:

1. Jozset Bodig, Ph.D., Benjamin A Jayne Ph.D., Mechanics of Wood and Wood Composites 2. Johnston, Ken, Some Thoughts on Rudder Sections , Multihulls Magazine (Jan/Feb 1980) 3. Eck Bransford, Everything You Ever Wanted To Know About 505 Fins 4. Lindsay, Mark, Centerboards and Rudders , Yacht Racing/Cruising Magazine (April 1981) 5. Abbott and Doenhoff, Theory of Wing Sections, Dover Publications, Inc. New York (1959) 6. Captain James R. Watson, How to Loft Airfoil Sections , Epoxyworks 1 (Fall 1992)

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Best Centerboard Designed Boats

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I see a lot of people discussing centerboarders which I have always been very sttracted to due to their capability to go gunkholing but still be able to drop the board down and really increase stability and windward ability. But I have no experience with these boats. I have never owned one or sailed on one. Here are my questions 1) How are the centerboards raised and lowered? Is it hard to do? Do they all swing down on a pivot or do some slide down (like a daggerboard)? 2) Are there different designs? What is there to look out for ? What is the maintanence? Will they last the life of the boat? Are they troublesome? 3) Can I sail with the centerboard partially down if I want? 4) What are the best designed Centerboard boats out there? Which ones are the boats that are to be avoided? Why don''t we see more boats manufactured with swing centerboards?...It seems like the ideal configuration for cruisers that like "thin water" anchorages. 5) Any other comments?...Pro''s Con''s  

To answer your questions: 1) How are the centerboards raised and lowered? Is it hard to do? Do they all swing down on a pivot or do some slide down (like a daggerboard)? Most centerboards either have a small winch that tensions a cable that raises the centerboard. These winches vary from trailer type cable winches (electric and manual) to normal sheet winches in which case there is often a block and tackle on the end of the centerboard penant. The centerboard cable either acts through a tube that is sealed at the bottom and or deck or through a variety of pull rod designs that pass through a packing gland. Centerboards are usually not too hard to operate but drop keels because of their weight take a fair amount of cranking to pull up and down. Most cruising centerboard boats have pivoting centerboards (just weighted enough to cause them to be heavier than water) or Swing Keels (which pivot and are weighted significantly enought to help act as part of the boat''s ballast.) There are daggerboard boats out there but those are mostly small boats. There is a current trend in small race boats to have a dagger board with a bulb on the end. These are very efficient sailing wise but are much more difficult to raise and lower and really cannot be partially raised lowered under sail. 2) Are there different designs? What is there to look out for ? What is the maintanence? Will they last the life of the boat? Are they troublesome? They vary very widely in design, quality and execution from crudely cast iron swing keels, or a rough cut steel plate, to nicely fabricated lead keels, to nicely fabricated fiberglass foils, to crudely fabricated glass over plywood. In my mind, The best cruising boat set up is a keel/centerboard where these is a small shoal draft keel that the centerboard emerges from the bottom of. When fully retracted the centerboard is wholely cased in the trunk and is not exposed below the bottom of the short keel. This design gives up a little performance but offers the most protection for the centerboard and represents a good compromise in performance. If performance is your thing than a daggerboard with a bulb is a better option. (I am thinking of building a small daysailor overnighter to putter about with and will probably do that kind of a CB.) There is more maintenance. The centerboard penants, winches and packing glands need maintenance. The pivot bushings and penant attachment points need regular maintenance and at some point replacement. There are often flaps across the centerboard slot that need periodic replacement. Centerboard often have minor damage to their fairing materials and barrier coats as the seem to be used as a depth sounder more often and there is some wear of centerboard against the side of the trunk. Even painting the Centerboard is a little harder because the boat needs to be high enough to let the whole board down. Whether they last the life of the boat depends on maintenance and how the original board was constructed. 3) Can I sail with the centerboard partially down if I want? Most boats can be sailed with the board partially down. One nice thing about a centerboard is that it can be partially raised or lowered, i.e. shifted in position to balance the helm in heavy air or even raised some to allow more leeway in heavy air reducing heeling. For most keel centerboarders the best performance is with the keel down for beating and close to beam reaching, partially raised when broad reaching and all the way up on a run. 4) What are the best designed Centerboard boats out there? Which ones are the boats that are to be avoided? Why don''t we see more boats manufactured with swing centerboards?...It seems like the ideal configuration for cruisers that like "thin water" anchorages. I don''t have time to do a good and bad list this morning but keel/centerboard boats are more expenive to build than their fixed keel sisters, expecially in sizes over about 25 feet.They require more ballast and more hardware to work well. Most people seem to be willing to accept a wing or bulb keel. 5) Any other comments?...Pro''s Con''s Keel centerboards give up a fair amount of performance over a well designed fin keel but if well designed generally offer better performance than other forms of shoal draft keels including wing and bulbs. They are harder to build properly and harder to maintain, but offer a lot of advantages to a cruiser. Jeff  

I own a 28ft Soverel(1965), it has a long shoal draft keel in which a centerboard swings out.It uses a gear to crank it up and down. This is a straight shot to the centerboard trunk through a stainless tube (this mounts from cb trunk to below cockpit floor above waterline).It is not super easy or fast to raise. The cable should be checked or replaced every few years I would guess. My centerboard is lead incased in fiberglass. I know this because the cb was left all the way down at dock(it should never be that far down)and the boat sat on it at low very low tide and bent it in half, the repair was not easy! Anyway I love my boat I can steer the boat with cb adjustments, all but down wind. It is nice to singlehand I can make sail changes or go below without having to hand steer. These are the good point of this boat I have no clue about others boats. Paul B  

I think the keel/centerboard designed, as mentioned above, is the best CB configuration. This design is used by Hinckley, Bristol, Little Harbor, Cheoy Lee (Pedrick 41) and Alden to name just a few builders. Many K/CB boats can be sailed equally as well with the board up as down, on almost all points of sail. Downwind there is the advantage of having the boat up, upwind, having the board down can be a significant advantage. I would say (since I just got one) that the most beautiful and well designed K/CB boat of all time is the Hood 38 built by Wauquiez. Sisterships were built by Bristol (38.8) and Little Harbor (Ted Hood''s company). She is a delight to sail, very well thought out, well built and nicely finished. I could not be happier. Thus, I will recommend to you Ted Hood''s K/CB designs. Perhaps one of the most significant advantages, aside from the obvious ability to sail into skinny water, is the wonderful tracking ability of these boats. This is not to be taken lightly if you plan to do some distance cruising. I can take my hands off the helm for long periods of time, not even bother to lock it in, and have the boat track on any point of sail. To me, with a K/CB, you have all the advantages of a full keel boat and a fin keel boat with none of the disadvantages of either. Maintenance is really very minimal and does not occur on even an annual basis. Just keep inspecting the cable when the boat is pulled. As to the placement of the winch for the cable, there are several different designs. Some use lines to the cockpit, some have a winch with cable in or just out of the cockpit. I hope this helps.  

Regarding the stability question in the original post, as Jeff says most boards are only slightly heavier than water, and so do not significantly lower the center of gravity when in the lowered position. There is a school of thought which says that a centerboarder is more stable with the board raised in heavy weather; as Jeff mentioned this allows more leeway. In theory this reduces the chance of the boat "tripping" over her keel. I personally am a great fan of centerboarders. Partially raising a front pivoted board moves the center of lateral resistance aft, thereby reducing weather helm, and is very useful in balancing a boat.  

Regarding the question on the weight of the CB. I believe the CB on the Hood 38 is 800 lbs. A friend with a Cheoy Lee Pedrick 41 told me his CB was also very heavy. Hope this helps  

I''ve had a C&C 40 for 21 years. She is now for sale and is a keel centerboard. The board weighs about 700# and is pulled with a winch and a five part tackle connected to a cable, which pulls the board. We seldom use the board, unless we are trying to make a point and avoid two tacks. With the board down, she will really put her nose into the wind. With the board down she draws 8''6" and up 4''8", so she goes where the seven foot keels can''t. Are you interested in a boat?  

Doublee44, Well I''m not in the market to purchase a boat right now, but I am doing "Mental Research" on what Features/Types of boats I would be looking to get as my "next boat". If I was to get a next boat I would be looking for one to cruise extensively down to the "Islands" (carribean, Central/South America et.al.) And I am known to be a crusing type sailor that loves to gunkhole. I have a newer Catalina 36MKII with a wing keel that I love dearly. I think it is an awesome boat for extensive coastal cruising with periodic juants offshore. No boat is perfect for all situations and though it would be a fine boat for what I described above, I feel there are a few features that I would like to have that would make it even "more ideal" (everything is relative.....and so are the costs). I am slightly enamored on a keel/centerboard design as it give the best compromise in what I like to do. I am not "super" concerned on the extra bit of maintenance needed for the centerboard, just as long as the design was a "decent" one. Thus the questions on how some are raised and lowered....(Though, I''m still not sure which is the "best" design). So on my "next boat" I might be looking for a keel/Centerboard configuration if it was well designed and less likely to keep me hanging (Pun intended). And I am starting to become interested in possibly a fractional rig as per some of the reasons Dave_H has mentioned (if done properly easier to depower main and smaller headsail to deal with.....yes I am listening Dave) But I am still not overlooking Masthead Rigs for their sturdiness and simplicity and if done correctly (Right sized sails, lines to cockpit, etc, etc) they can be able to be singlehanded well by a competent skipper...... I think the C&C is a nice boat. Is it listed somewhere on the net?, just for a quick look...;-)  

Ahoy Jeff_H, To your point of "small race boats with daggerboards with bulb attached", do you know how this type fares in a grounding? Art (I''m assuming a boat such as a Melges 24, Ultimate 20,etc.)  

Properly designed and all other things being equal a daggerboard with a bulb should do as well or better than fin keeler. The only example that I know of was a Melges 24 that took to the ground at speeds thought to be in excess of 8 knots. The description that I heard was that she hit hard and with the large chute up, spun and took a hard down which carried her over the hump. Damage was described as cosmetic. I don''t think that is a representative fair sampling of the concept. I suspect that depending on the design of the boat and the nature of the grounding there could easily be more extensive damage to the drop keel or its scabboard. Modern daggerboards with bulbs are next to non-existent in larger production boats but they are a concept that I would love to see more often. It is comparatively easy to design a structure that could absorb the engery of a major impact. It might include a large rubber impact block that could take buffer most of the force of impact rather than deliver the loads into a rigid structure. Longer than usual leverage into the boat perhaps with SS tubes sliding an a SS scabboard could also reduce the loads felt by the boat. I had designed a quick release lock down system that would permit the keel to be released under pressure allowing it to be retracted when aground but which would automatically engage if the boat took a knockdown, locking the keel so that it can''t retract due to gravity. If I were wealthy enough to build a custom boat (which is not likely in this lifetime) a lifting dagger board with a bulb would be high on my list. Jeff  

Jeff_H said: Properly designed and all other things being equal a daggerboard with a bulb should do as well or better than fin keeler. The only example that I know of was a Melges 24 that took to the ground at speeds thought to be in excess of 8 knots. The description that I heard was that she hit hard and with the large chute up, spun and took a hard down which carried her over the hump. Damage was described as cosmetic. I don''t think that is a representative fair sampling of the concept. I suspect that depending on the design of the boat and the nature of the grounding there could easily be more extensive damage to the drop keel or its scabboard. Modern daggerboards with bulbs are next to non-existent in larger production boats but they are a concept that I would love to see more often. It is comparatively easy to design a structure that could absorb the engery of a major impact. It might include a large rubber impact block that could take buffer most of the force of impact rather than deliver the loads into a rigid structure. Longer than usual leverage into the boat perhaps with SS tubes sliding an a SS scabboard could also reduce the loads felt by the boat. I had designed a quick release lock down system that would permit the keel to be released under pressure allowing it to be retracted when aground but which would automatically engage if the boat took a knockdown, locking the keel so that it can''t retract due to gravity. If I were wealthy enough to build a custom boat (which is not likely in this lifetime) a lifting dagger board with a bulb would be high on my list. Jeff Click to expand...

I own a Soverel 36R built in 1967. It has a full keel with the centerboard stowed in the keel. The board on these are solid brass. I read somwhere that it was thousands of pounds of brass and I don't doubt it as it's HUGE in all dimension. I don't believe there are going to be many boats built today like this. She sails like a dream. My draft with the brass up is 4.25' and down 9'. And 9 feet of thousands of pounds of brass hanging under my boat makes me feel real comfortable in rough weather. Sometimes it feels like she can sail straight into the wind with the brass down. Brass up she can take me into shallow water where many 26' boats have trouble. I will admit that I'd love to throw a power winch on her as that much weight obviously takes a serious arm to raise. And sorry, but the plan is for her never to be for sale again. If you look around for a Soverel, keep in mind that Bill Soverel ( the dad ) designed and built ocean cruisers through the late 60's. The son, Mark designed and built them from the 70's on as racers. Not that there's anything wrong with Mark's boats. He also built them well and from what I read his Soverel 33 owned the races for many years and sometimes still do.  

Must be Viva sailing Yachts (Sasanka) from Poland. Off course I`m owner of a VIVA 600. Very suitable for Swedish Lakes and Channels.  

Very cool. Never heard of the Viva 600 before, so I looked it up. 19' boat with an enclosed head. Awesome.  

Currently my favorite centerboard design is Boreal. They start in the 40’s and go into the 60’s. As regards daggerboards AKA lifting keels the B50 is nice but the K&M besteavers in the mid 50s comes close to my idea of an ideal cruising boat. For older boats thought the Ted Hood centerboarders were cooler than dirt. Was surprised how well they pointed. Sailed a B40multiple times in the Marion Bermuda. Hated listening to the board slap in light air and she was wet in a seaway. More than once have seen debris get into the slot and jam it. On one occasion it was gravel and the boat needed to hauled to clear it. Hydraulics maybe better than a pendant/winch set up depending on design when dealing with bigger centerboards Changing out a pendant can be real hard. Just my thoughts. If you go with a lifting keel play attention to how it will handle a grounding. There are some very ingenious ways that have been thought out to handle this mishap.  

We have a board on here. We draw 6 and change with it up and 10 and change with it down. I was told by the PO that he had added about 2500# to the board, but I have no way of confirming this until we pull it out. With 6' of draft, our board isn't so much about leeway as it is trim and comfort. It definitely stabilizes the boat (underway or at anchor, by the way) which helps the boat sail better. Alternating the depth of the board (visualize an upside down shark fin) moves the center of lateral resistance a bit forward or aft. Off the wind it is also a stabilizing factor and a deeper point around which to turn the boat. There are two major drawbacks to centerboards, IMO. One is that at a certain point down, they will begin to move about in the trunk and make noise. Maybe that's less of a problem on other boats, but this one slips through the water so silently that sometimes the noise from the board can be a little bit bothersome. Solution: pull it up a few cranks. The other much more serious problem that can develop with a board is the trunk leaking. I don't care if it is a day sailor or a 50' ocean going cruiser; this is a serious problem. In some cases it can be prohibitively expensive to repair and on those boats you will find the trunk sealed up and the board decommissioned.  

Think technique and potential troubles vary widely depending on if your talking about a Daggerboard ( no real ballast component) lifting keel (major ballast component commonly in a bulb) Keel centerboard ( no trunk intruding in to accommodations or even bilge to a significant degree) Centerboard Also impact on how the boat handles varies. Most of the daggerboards I’m familiar with have been on multis. Can anyone comment on daggerboards in ocean going vessels?  

My Clearwater 35 is a swing keel boat. It has lead enclosed within the leading edge of an elliptical fiberglass foil keel that weighs about 3000#. The keel retracts completely into the hull, allowing the hull to sit on the bottom (with the swing rudder up.). The boat was originally spec'd to draw 1' 10" with everything up, but it draws at least 2' when loaded for cruising. Draft is 6' with the keel down. The aft end of the keel is faired to fill the hull aperture when the keel is fully down. It is lowered by gravity and raised via a winch on the coachroof that hauls a pennant attached to a block and tackle arrangement with 6:1 purchase. I've been in caught in some rather high winds (39 - 45 kts) several times in the 21 years I've owned her, but never came close to a knockdown. The boat tends to head up in strong puffs and does not like to have the rail buried. The Clearwater 35 is not a tender boat and typically reaches close-hauled maximum speed with a max of 20° heel. Form stability is part of the design equation along with weight discipline by the designer, Craig Walters, who also designed similar Sequin boats of 40' and over. With inboard shrouds and a low aspect fin keel, the Clearwater 35 goes to weather better than most. It has a shorter WLL and displaces at 2000# more than a J-35, so it isn't a real race boat. However, the swing keel allows shortcuts and anchoring where most can't. And I can keep it at my shallow water (2.5' MLW) dock--no J-35's allowed! Maintenance has been minimal. I did replace the original SS keel pin, about 17 years ago when it appeared to be weeping at the seals. The new pin is 316 SS, whereas the original appeared to be 304 SS, and it hasn't leaked since. The 17 yr old seals are still going strong. The only other maintenance item is the pennant, which is 1/2" Dacron braid, and lasts over 10 years before it gets worn from winching. The keel trunk is the elephant in the main salon, extending all the way up to the coachroof, so it isn't for everyone--just those who need adjustable draft in a boat that sails very well.  

There are several French boats with variable draft. Alubat Ovni, Allures, Garcia Expedition, Boreal...... They are typically ‘expedition’ boats rather than fast cruisers but they command a very loyal following and are great for high tidal ranges and going anywhere that ‘dries out’. Not sure what your objective is in looking for lifting centerboard or swing keel but worth taking a look anyhow.  

Wow! An 18 year old thread that's been dead for over 10 years comes back to life!  

And unlike electronics, most of the old comments are still relevant!  

Tele from talks with owners of these boats another aspect that draws people to these boats is behavior in extreme weather. Apparently with board up even if sideways to a wave they will slide not broach and turn turtle. With a jsd out and companionway closed the storm tactic is totally passive. An excellent feature for a couple. Also trade wind sailing is downwind so the decrease in wetted surface with board up is helpful. Boreal had the centerboard but also two small daggerboards way aft. Downwind the configuration is centerboard up daggerboard(s) down. Given they are Al and coatings are expensive although marketing photos show them beached from what I understand beaching is avoided. Sand is very abrasive and if in surf the boat will settle some. However in places where anchoring stern to beach and bow in shallow water would have been very convenient. Going off the sugar scoop into waist deep water to wade to the beach would be slick.  

Outbound, you are right on all counts. I confess that I did not quite have the guts to pull the trigger on any of the boats listed and instead went with a fixed keel on an Aluminum boat. But I sailed a few before making the decision and was very nearly ready. In the end, I was prepared to sacrifice the Bahamas for simplicity (did not go for air-con, generator or any high maintenance systems other than an autopilot)  

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Daggerboard vs Centerboard: Choosing the Right Option for Your Sailboat

by Emma Sullivan | Aug 7, 2023 | Sailboat Maintenance

Short answer daggerboard vs centerboard:

A daggerboard is a retractable keel that can be raised or lowered vertically, providing stability and reducing sideways drift. On the other hand, a centerboard is also a retractable keel but pivots horizontally instead of vertically. While both serve similar purposes, their designs and mechanisms differ in terms of usage and effectiveness depending on the type and size of vessels they are used for.

Comparing Daggerboard vs Centerboard: What You Need to Know

Introduction:

When it comes to sailing, understanding the different types of boards used in sailboats is essential. Two commonly used boards are the daggerboard and centerboard . While both serve a similar purpose of providing stability and preventing lateral movement, there are a few key differences between these two options. So, let’s dive deeper into comparing daggerboards versus centerboards to shed some light on what you need to know.

1. Definition:

To start with, let’s define each board type. A daggerboard is a retractable keel that can be raised or lowered vertically through a slot in the hull of a sailboat. On the other hand, a centerboard is also an adjustable keel-like appendage but pivots around a single point when lifted out of the water .

2. Functionality:

The primary function of both boards is to counteract the sideways forces generated by wind acting on the sails and maintain stability in the water. However, they achieve this goal using slightly different mechanisms.

With a daggerboard, sailors have more control over adjusting its depth as it can be raised or lowered at will. This allows them to fine-tune their boat’s performance according to wind conditions and desired speed.

On the contrary, centerboards offer less adjustability and usually have set positions determined by design. Nevertheless, they still provide adequate lift and resistance against sideways drift while sailing close-hauled or upwind.

3. Performance:

When it comes to performance comparison between these two options, both have their pros and cons depending on factors such as boat size, sail plan, and intended use.

Daggerboards generally provide superior upwind performance due to their ability to be adjusted for various wind angles precisely. They allow sailors to optimize for maximum lift while minimizing drag in challenging conditions like gusty winds.

Centerboards excel in downwind sailing situations where maintaining optimal balance becomes critical. Their fixed position contributes additional stability during fast runs or when navigating waves, making them a favorable choice for racing scenarios or larger sailboats .

4. Construction and Maintenance:

Another aspect to consider is the construction and maintenance of these boards. Daggerboards are often made from materials such as fiberglass, carbon fiber, or wood laminates, requiring periodic inspection for wear and tear. However, they can be easily removed during maintenance or storage.

Centerboards are commonly built using similar materials but differ in their pivot point mechanism. The pivot offers simplicity and fewer moving parts that could potentially fail over time. Nonetheless, periodic inspections are still recommended to ensure the board remains secure within its casing.

5. Adaptability:

For sailors who enjoy exploring various water conditions, adaptability becomes a significant factor when comparing daggerboards and centerboards.

Daggerboards prove to be more versatile in this regard as their adjustability allows for experimentation with different sailing techniques on changing water types. This attribute makes them particularly suitable for sailors looking to venture into both shallow waters and deeper offshore locations while keeping their vessel stable.

Centerboards, although limited in terms of adjustability, offer reliability and ease of use across a wide range of sailing environments. They work exceptionally well for recreational sailors who primarily navigate deepwater areas without the need for frequent adjustments.

Conclusion:

In conclusion, understanding the differences between daggerboards and centerboards is crucial when considering which option best suits your sailing needs. While daggerboards provide greater performance optimization capabilities across wind angles and various conditions, centerboards offer stability and reliability in both recreational cruising and racing scenarios.

Ultimately, it’s essential to carefully evaluate your requirements based on boat type, desired performance characteristics under specific weather conditions, as well as personal preferences before making a decision between these two distinct but equally valuable options: the versatile daggerboard or steadfast centerboard.

Understanding the Difference: A Step-by-Step Guide to Daggerboards and Centerboards

If you’re passionate about sailing or have recently taken up the sport, you might have come across the terms “daggerboard” and “centerboard.” While these two components are integral to a sailboat ‘s performance, their roles and characteristics can sometimes be confusing. In this comprehensive guide, we will take you step-by-step through everything you need to know about daggerboards and centerboards – shedding light on their differences and helping you make informed decisions for your own sailing adventures.

First things first, let’s define both daggerboards and centerboards. Both of these structures are essentially appendages that extend from the hull beneath a sailboat. They serve a shared purpose: providing lateral resistance against the force of the wind, preventing the boat from being blown sideways while allowing it to move forward effectively. However, there are distinct variations in design, functionality, and usage between them.

Let’s start with daggerboards. As their name suggests, these boards resemble daggers due to their shape – long and narrow blades that slide vertically into slots in a boat’s hull. Typically located amidships or towards the stern of a vessel, daggerboards are commonly used in high-performance racing yachts or catamarans . Their primary function is to counteract the sideways force generated by wind acting on sails positioned away from where they attach to the mast – an effect known as “lee helm.” By adjusting or deploying multiple daggerboards asymmetrically, sailors can optimize their boats’ performance by minimizing drag while maximizing lift.

On the other hand, centerboards serve a similar purpose but differ significantly in design and usage compared to daggerboards. Unlike fixed daggerboads that slide vertically into slots within a hull structure permanently mounted on a boat’s keel or inside its hull at centreline position (often hollow), centerboard systems rely on pivoting mechanics and vertical movement.

To put it simply, centerboards pivot around a fulcrum or a pin attached to the hull, allowing them to be raised or lowered as needed. They are often found in sailboats designed for recreational purposes – such as small dinghies, daysailers, or even some keelboats. Centerboards can be retracted fully into the hull for shallow-water sailing and ease of launching or landing – an especially useful feature when dealing with beach landings. When lowered into position, they provide similar lateral resistance as daggerboards but typically offer less efficiency due to their simplified shape and lesser surface area.

Now that you understand the basic concepts behind daggerboards and centerboards, let’s explore their advantages and considerations. Daggerboards excel in providing substantial lateral resistance and increased lift capability due to their more refined shape and positioning options. The ability to adjust multiple daggerboards asymmetrically can lead to improved performance under varying wind conditions, making these boards indispensable for competitive sailors seeking optimal speed.

In contrast, centerboards are known for their versatility and convenience. Their pivoting mechanism enables them to be easily raised or lowered while on the water – a valuable asset when navigating shallow waters without risking damage or grounding the boat. Moreover, many small sailboats with centerboard designs also benefit from enhanced stability since the board’s weight aids in counteracting heeling forces acting on the sails.

When choosing between a daggerboard setup or a boat equipped with a centerboard system, several factors come into play. Firstly, consider your sailing intentions: are you primarily interested in casual cruising, racing competitively with precise maneuvering requirements or something in-between? Secondly, assess your local sailing conditions: do you frequently encounter challenging wind patterns or navigate areas with shallow waters ? These aspects will help steer you towards the most suitable option for your needs.

Ultimately, whether you opt for a sailboat equipped with a daggerboard system or one featuring a centerboard mechanism depends on various factors, including performance goals, sailing preferences, and intended use. Don’t hesitate to consult with experienced sailors, boat designers, or reputable manufacturers to ensure you make the right choice.

In conclusion, understanding the key differences between daggerboards and centerboards empowers sailors to select the appropriate configuration for their specific needs while navigating diverse sailing environments. Both appendages play crucial roles in enhancing sailboat stability and maneuverability, but their designs and functionalities vary significantly. Take into account your sailing aspirations and local conditions when making a decision – ensuring an enjoyable and successful experience on the water !

FAQ: Decoding the Pros and Cons of Daggerboards vs Centerboards

Title: FAQ: Decoding the Pros and Cons of Daggerboards vs Centerboards for Smooth Sailing

Introduction: Ahoy, fellow boating enthusiasts ! As you venture into the exciting world of sailing, one critical decision awaits you on your quest to harness the wind’s power. Today, we dive deep into deciphering the age-old conundrum—daggerboards or centerboards? Strap on your life vests as we embark on a journey to unravel the pros and cons of these two remarkable appendages that determine our vessel’s stability and maneuverability.

1. Understanding Daggerboards: Daggerboards, like stealthy underwater swords, elegantly slice through waters beneath our hulls. These vertically retractable boards are typically found in high-performance sailboats, optimized for speed and agility. But what makes daggerboards such an enticing choice?

Advantages of Daggerboards: a) Enhanced Speed: When engaged correctly, daggerboards create less drag compared to fixed keels or centerboards while maintaining lateral resistance. This enables your vessel to cut through water with minimal resistance, giving you a serious edge in speed races. b) Improved Upwind Performance: Daggerboards lend invaluable assistance in maximizing upwind sailing angles by resisting leeway—a fantastic asset when navigating against adverse currents or winds . c) Advanced Maneuverability: The ability to raise and lower these boards allows for easy adaptation to different sailing conditions without limiting boat movement possibilities.

Disadvantages of Daggerboards: a) Costly Investment: Opting for daggerboard-equipped vessels may lead to a higher upfront investment due to their intricate design and construction. b) Maintenance Complexities: Attending to daggerboard mechanisms demands regular inspection and occasional repairs; proper care is essential for long-term performance . c) Limited Draft Range: Some sailors argue that daggerboards hinder access to shallow waters due to their deeper draft range compared to centerboards.

2. Unveiling Centerboards’ Secrets: Now, let’s dive into the undeniable allure of centerboards—a versatile alternative that has carved its place in the sailing community. Positioned within a sailboat’s hull, these retractable appendages offer unique advantages worth considering.

Advantages of Centerboards: a) Versatility: The retractable nature of centerboards allows for easy maneuvering in shallow waters or when navigating close to shore. No more worrying about running aground! b) Cost-efficiency: Boats with centerboards tend to be more affordable compared to their daggerboard-equipped counterparts, making them an attractive choice for budget-conscious sailors . c) Simplicity in Maintenance: With fewer moving parts and mechanisms, the maintenance requirements for centerboards are often less complex and demanding.

Disadvantages of Centerboards: a) Compromised Performance: Sailing aficionados argue that centerboards might sacrifice performance compared to daggerboards due to increased drag and reduced lateral resistance. b) Limited Upwind Performance: When faced with strong winds or currents pushing against your vessel, centerboards may struggle to maintain course stability effectively.

Conclusion: Now that we’ve embarked on this quest through the pros and cons of daggerboards versus centerboards, it’s time for you to weigh your options carefully. Consider factors like your desired sailing style, local water conditions, budget constraints, and long-term maintenance commitments. Remember, whether you opt for the sleek agility of daggerboards or the versatile adaptability of centerboards—safe voyages and thrilling adventures await as you navigate through uncharted waters!

Exploring the Advantages of Daggerboards and Centerboards in Sailing

Are you an avid sailor or someone looking to dip their toes into the exhilarating world of sailing ? If so, understanding the advantages that daggerboards and centerboards provide can significantly enhance your sailing experience. These essential components are not only cleverly designed but also play a paramount role in improving a sailboat’s performance on the water . In this blog post, we will delve into the details of these devices, uncovering their remarkable benefits.

Firstly, let’s start by demystifying what daggerboards and centerboards actually are. Both of these apparatuses serve the same purpose – they stabilize a sailboat by providing lateral resistance, preventing it from drifting sideways due to wind pressure. However, they accomplish this task through different mechanisms.

Daggerboards are retractable foils that typically slide vertically from within the hull. These appendages are often found on high-performance racing boats as they offer numerous advantages. One notable advantage is their ability to maximize speed by minimizing hydrodynamic drag. When deployed correctly, daggerboards reduce sideways drift and lift the boat out of the water slightly, reducing wetted surface area and frictional resistance – resulting in enhanced speed through the water .

Additionally, daggerboards have another trick up their sleeve – adjustable angle-of-attack. Sailors can fine-tune these boards to suit different wind conditions, allowing for optimal performance based on variable factors such as wind strength or direction. This adaptability ensures that you are always at an advantage when facing changing weather conditions during races or leisurely sails.

On the other side of things, centerboards – unlike daggerboards – pivot horizontally from within the hull towards the boat’s midline. Although they lack some of the advantages provided by daggerboards regarding drag reduction and adjustment capabilities, centerboards excel in versatility and accessibility.

One significant advantage that centerboards offer is their ability to navigate shallow waters easily. You’ll find these boats cruising close to shorelines and in areas where draft limitations exist, such as lakes, rivers, or even windy coastal havens with numerous sandbanks. The retractable nature of centerboards allows sailors to raise them fully when entering shallow waters, minimizing the risk of grounding the boat while still maintaining excellent balance and control .

Furthermore, the positioning of a centerboard closer to the boat’s center of mass assists in preventing excessive heeling (tilting) during sailing . For those new to sailing or those who prefer a more stable ride, this can provide a greater sense of safety and security on the water.

In conclusion, both daggerboards and centerboards bring distinct advantages to sailboat enthusiasts. Daggerboards offer improved hydrodynamics for speed enthusiasts while providing adjustability for varying wind conditions – perfect for competitive racing or achieving top-notch performance. On the other hand, centerboards excel in versatility by allowing sailors access to shallow waters without sacrificing stability.

Whether you’re aiming for podium finishes in a regatta or simply seeking an invigorating recreational experience on the water, having a good understanding of these vital components will undoubtedly elevate your sailing adventures . So next time you hoist those sails and feel the saltwater spray on your face, appreciate how these cleverly designed daggerboards and centerboards optimize your vessel’s performance, granting you unparalleled control and enjoyment throughout every voyage.

How to Choose Between a Daggerboard and a Centerboard for Your Sailboat

Choosing the right type of board for your sailboat is a crucial decision that can greatly impact your sailing experience. Two popular options are the daggerboard and the centerboard , each with its own unique advantages and considerations. In this blog post, we will delve into the intricacies of these two board types to help you make an informed choice for your vessel.

Let’s start by understanding what a daggerboard and a centerboard actually are. Both are vertical boards positioned in the keel to provide stability and prevent sideways drift. The primary difference lies in their configuration and functionality.

1. Daggerboards: Imagine a dagger slicing through water with precision – that’s precisely how daggerboards operate! These long, narrow boards are fully retractable, typically made from high-strength materials like fiberglass or carbon fiber. They offer excellent hydrodynamic efficiency, leading to enhanced upwind performance and minimizing leeway (sideways drift) during sailing .

Why opt for a daggerboard? Well, if you’re passionate about racing or want to explore faster sailing speeds, daggerboards should top your list. With their ability to be raised or lowered at will, they allow countless adjustment possibilities while on the water – from optimizing your boat ‘s balance based on wind conditions to maneuvering through shallow waters without worrying about grounding.

However, there are some drawbacks worth considering before committing to a daggerboard. Due to their intricate design and construction, they tend to be more expensive than centerboards. Additionally, retracting them may require physical effort or even hydraulic assistance on larger vessels.

2. Centerboards: Centerboards share similar functionality as daggerboards but differ in construction and operation. Unlike daggerboards that slide vertically within casing built into the hull of the sailboat, centerboards pivot horizontally from its midpoint inside the hull itself.

So why go for a centerboard instead? Primarily known for their versatility and adaptability across various boat types – dinghies, daysailers, or cruisers – centerboards provide easy access to shallow waters. As they pivot up into the hull, the sailboat’s draft decreases, allowing you to explore areas that would otherwise remain inaccessible.

If budget constraints are a concern, opting for a centerboard might be more economical compared to a daggerboard . They are generally simpler in design and easier to maintain due to their horizontal movement mechanism.

Nevertheless, keep in mind that centerboards may compromise your sailing performance slightly. Although they perform reasonably well upwind and allow sailing closer to the wind than boats without any keel at all (known as leeboards), they are not as efficient as daggerboards when it comes to performance-oriented sailing.

In conclusion, choosing between a daggerboard and a centerboard ultimately depends on your specific requirements and intended use of the sailboat. If you crave exhilarating speeds, impeccable upwind capabilities, and have room in your budget for a high-performance board, go for a daggerboard without hesitation. On the other hand, if versatility, cost-effectiveness, and shallow-water exploration take precedence over pure speed obsession, opt for a centerboard.

Remember that regardless of which board you choose; practice and experience will play crucial roles in mastering its deployment and optimizing its effect on your sailing adventures . Happy cruising!

Going Beyond Basics: Mastering the Use of Daggerboards vs Centerboards

Title: Going Beyond Basics: Mastering the Art of Daggerboards vs Centerboards

Introduction: When it comes to sailing, achieving optimum performance requires more than just a basic understanding of the equipment. To truly excel in this beautiful sport, sailors need to delve deeper into the intricacies of their vessel’s components. One such critical component is the choice between daggerboards and centerboards. In this blog post, we will explore these options in detail, shedding light on their characteristics, benefits, and how mastering their use can take your sailing skills to new heights.

The Difference Between Daggerboards and Centerboards: Before we dive into their nuances, let’s begin by understanding the fundamental difference between daggerboards and centerboards. Both are retractable fins intended to prevent leeway (sideways drift) when sailing against the wind . The primary variation lies in their location on the hull. Daggerboards are inserted vertically through slots located towards the middle of each hull side on catamarans or near the keel area on monohulls. Conversely, centerboards are mounted on pivots below the hull at its central point.

Daggerboard Dominance: 1. Performance Advantages: Daggerboards provide sailors with remarkable advantages when it comes to sailboat performance. Their vertical positioning allows for reduced drag and enhanced lift characteristics compared to centerboards. 2. Upwind Sailing Power: Due to their dynamic design, daggerboards enable better upwind sailing as they can be further extended downwards into deeper water when necessary – increasing resistance against being pushed sideways by wind pressure. 3. Higher Speed Potential: By reducing leeway during upwind maneuvers, daggerboard-equipped boats experience less resistance and consequently achieve higher speeds. 4. Enhanced Steering Control: Another noteworthy benefit of daggerboard usage is improved steering control under demanding conditions like strong winds or rough seas.

Centerboard Superiority: 1. Versatility across Depths: Compared to daggerboards that require specific water depths, centerboards allow sailors to venture into shallower waters. The ability to raise the centerboard partially or completely reduces grounding risks and grants access to areas otherwise inaccessible. 2. Simplified Maneuverability: With a fixed pivot point across all wind conditions, centerboards are more straightforward and hassle-free to operate. Their stability provides consistent performance, making sailing a breeze for beginners and less experienced crews. 3. Safety in Grounding Situations: In the unfortunate event of running aground, a centerboard is designed to kick up easily upon contact with solid objects, minimizing potential damage to both the board and the hull.

Mastering Daggerboards vs Centerboards: 1. Understanding Conditions: To make an informed choice between daggerboards and centerboards, it’s crucial to assess the predominant sailing conditions you encounter. For open-water excursions where speed reigns supreme, daggerboards are often favored. Conversely, if your voyages take you through varied depths or potentially shallow areas, a centerboard may be more advantageous. 2. Gradual Familiarization & Practice: Like any skill in sailing, mastering the use of daggerboards or centerboards necessitates practice and experimentation. Sailors who wish to truly harness these components should gradually familiarize themselves with how they influence the boat’s performance by adjusting their depth according to wind strength and direction. 3. Seek Expert Guidance: Advanced sailors seeking technical expertise can benefit from reaching out to experienced professionals or participating in sailing clinics focused on advanced techniques involving daggerboard or centerboard utilization.

Conclusion: In summary, going beyond the basics of sailing involves mastering intricate aspects such as choosing between daggerboards and centerboards. Each has unique advantages catering to different sailing scenarios and personal preferences. By honing your understanding of these components’ functionality along with practice at utilizing them optimally under varying conditions enable sailors to unlock remarkable improvements in speed, maneuverability, and control – elevating their overall proficiency in the art of sailing.

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Jimmy Cornell: Why aluminium centreboarders are ideal for serious explorers

• Jimmy Cornell
• November 12, 2020

Having covered 100,000 miles in his aluminium centreboarders, Jimmy Cornell explains why he rates them so highly for adventure sailing

A true exploration yacht: Jimmy Cornell’s Ovni 43 Aventura III in Antarctica

Both Aventura III , an Ovni 43, and Aventura IV , a Garcia Exploration 45, were aluminium centreboarders. Having clocked some 100,000 miles with them, including passages to Antarctica and the North West Passage , I can state unequivocally that for safety as well as convenience, a centreboard is a great advantage on a cruising boat.

In my case, the choice of aluminium for a boat intended for exploring areas off the beaten track was logical, and so was that of a centreboard. One of the main reasons for the latter was to increase my cruising options. The ability to reduce draught instantly is also a safety factor, as it allows access to a protected shallow spot if needing shelter in an emergency. Also, with a flat bottom, the boat can dry out.

Another advantage is that the board can be used for sounding when entering an unfamiliar anchorage, a new meaning for the term ‘sounding board’. While in the North West Passage we hit an uncharted rock quite hard, but the centreboard did its job and swung up, scraped along the top of the rock, then dropped back into its lowered position. The only damage was to my ego, but any other boat would have been in serious trouble!

Both yachts have integral centreboards, so that when fully raised, the board retracts into the hull. The ballast is also internal, with a ratio to displacement of 32 in both cases, which is similar to that of most modern cruising yachts. This brings considerable performance advantages.

The main role of the board is to provide lift when sailing close-hauled, and to reduce leeway when reaching. With the board fully down Aventura III drew 2.4m, and, when trimmed properly, it could point as high, or almost as high, as most fixed keel cruising boats. With a draught of 2.8m with the board down, Aventura IV performed even better than her predecessor.

To take full advantage of this special feature, a centreboarder needs to be sailed quite differently, both on and off the wind. This is when the centreboard becomes a true asset as it allows the wetted surface to be reduced. The technique is to lift the board gradually as the apparent wind goes past 135°, and continue lifting it up to the point where the board is fully retracted. This is, for me, the greatest advantage as the risk of broaching is virtually eliminated.

Article continues below…

Zero-carbon cruiser: Jimmy Cornell explains his electric multihull project

In 2010 I sold my [Ovni 43] Aventura III and, as I was 70, I felt the time had come…

Allures 40.9 vs Ovni 400: French aluminium centreboarders go head-to-head

Back in the mid-2000s the niche market for aluminium centreboarders was disrupted by the arrival of a new upstart, Allures…

The absence of a keel to act as a pivot in a potential broaching situation means that the boat does not tend to round up when, in a similar situation, a fixed keeled boat would do just that. This has allowed me to keep the spinnaker up longer than I would have done otherwise.

With the board up, steering the boat in strong winds was easy, as there was no keel to act as a pivot if the person at the helm made a mistake, or a large wave forced the boat into a broach. With a flat bottom and no keel, Aventura III acted just like a large windsurfer, with the rudder having no difficulty keeping the boat on course. Aventura IV has twin rudders so tracked even better and was a joy to helm.

Alloy alternatives

If you are considering an aluminium centreboard, make sure to read our head-to-head test of the Allures 40.9 and Ovni 400 . If neither of those suit, you probably need to go up a level in size and price, to the more semi-custom options offered by shipyards such as Garcia, Boreal or even KM. It is pertinent, however, to note that many of these traditional monohull brands are now branching out into the multihull market too.

Photo: Morris Adant

Designed in collaboration with Jimmy Cornell to transit the North West Passage, this model set a new rugged standard for mid-size exploration yachts. In inclement weather, watchkeeping can be done from a completely protected position at the forward end of the cockpit, or from the helmstation inside the pilothouse.

Price: €498,000 (ex. VAT)

Boreal 44.2

Boreal is a brand born from the experience of Jean-François Eeman, who spent six years sailing around the world with his four children. The new 44.2 will replace the ten-year-old, award-winning, Boreal 44. It has the same interior as the 47.2 (pictured), but with a single helm and rudder and a more enclosed cockpit.

Price: €485,520 (ex. VAT)

Garcia Explocat 52

Garcia is maintaining its exploration focus with its first catamaran. Once again there is plenty of protection on offer. A hard-top runs almost back to the transom and there is a complete interior navigation station similar to Garcia’s monohulls. The Explocat also has a forward cockpit accessible from the saloon via a watertight door.

Price: €1,159,000 (ex. VAT)

Vaan is a new brand, which uses recycled and sustainable materials – its first 42ft R4 is due for launch in early 2021. The aluminium hulls are formed from drinks cans, road signs and window frames, it uses cork decks and the upholstery is made from bio fabrics. It’s offered with electric propulsion and an optional regeneration system.

Price: €399,000 (ex. VAT)

Allures & Ovni catamaran update

Plans to launch the first Allures multihull, the aluminium hulled and glassfibre decked C47.9 (above), have been put on hold due to the success of its sister company’s new Explocat 52.

Ovni’s multihull solution, meanwhile, is the Ovnicat 48, which has been on the drawing board for a couple of years but has yet to be built.

First published in the October 2020 issue of Yachting World.

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Endeavour 32

Though now a bit dated, the endeavour 32 is a comfortable, capable cruising boat..

The Endeavour 32 began life back in 1970 as the Irwin 32. Ted Irwin designed her as a dualpurpose cruiser-racer before the development of the IOR. By 1975, the IOR was in full swing, and boats such as the Irwin 32 were obsolete as racers, since PHRF had not yet emerged to help handicap non-competitive boats raced at the club level.

Although the Irwin 32 had been out-designed for racing, the hull was still a comfortable design for cruising. The molds for the Irwin 32 formed the basis for Endeavour Yacht Corporation, which continued to build the boat as the Endeavour 32 until 1982.

Although the Irwin 32 and the Endeavour 32 look identical and have the same displacement, the Endeavour 32 is listed by the builder as being 4″ wider, 4″ longer overall, and 6″ longer on the waterline.

The Irwin 32 was originally available as a keel/centerboard boat drawing 3′ 6″, or with a long fin keel drawing 5′. The Endeavour 32 was originally a keel/centerboarder with the same configuration as the Irwin 32, or with a fixed shoal keel with 4′ 2″ draft. The original Irwin deeper keel was discontinued. Beginning in 1979, the keel/centerboard model was discontinued in favor of the shoal keel version.

Sailing Performance

Although the rig of the Endeavor 32 is fairly large, her relatively heavy displacement compared to dualpurpose 32-footers built today makes her somewhat slower than a more modern boat of the same overall length. The Endeavour 32’s ballast/displacement ratio of 40% implies a fairly stiff boat, but because of the boat’s shoal draft and narrow beam she is not as stiff as newer, lighter boats of the same length. While the Endeavour 32 is not a tender boat, her narrow beam and relatively high center of gravity mean she will heel fairly quickly.

Unless you buy a boat equipped with fairly new sails, there’s a good chance that the sails that come with a used Endeavour 32 will be approaching the end of their useful lives. Cruising sailors are notorious for making their sails last forever. After all, they’re cruisers, not racers. But cruising boats usually need all the power they can get to drive them due to relatively inefficient hulls and rigs.

The Endeavour 32’s PHRF rating of about 186 to 192 suggests a boat that is significantly slower than modern 32-footers, but comparable in speed to other boats of her vintage. The original Ericson 32, for example, has about the same rating, while the original Pearson 33 is about 10 seconds per mile faster. Owners report the Endeavour 32 to be underpowered in winds of under 10 knots. Owners in our survey have mixed opinions about the boat’s balance under sail, with some reporting excessive weather helm while others feel the boat to be well balanced. One advantage of the centerboard version is that the center of lateral resistance can be shifted by moving the board, reducing weather helm on a reach.

With the keel version, you don’t have the luxury of shifting the center of lateral resistance. We doubt that the keel version will go to weather as well as the centerboard boat. At the same time, the keel version does have a slightly lower vertical center of gravity, and should be somewhat stiffer when it breezes up. The specifications for the original Irwin 32 claim an extra 200 pounds of ballast for the centerboard boat, but the Endeavour brochure does not specify any difference in ballasting between keel and centerboard versions.

The rig is a simple single-spreader masthead rig with double lower shrouds, stepped on deck. No owners in our survey reported any problems with the deck-stepped spar, and one owner had sailed his boat to Bermuda and back. Tuning of the rig is straightforward, even for beginning sailors. Rigs don’t get much simpler than this.

We would be tempted to replace at least one of the mast-mounted halyard winches with as big a two-speed winch as we could fit. You don’t necessarily need it to hoist sails, but you’re also going to take crewmembers to the masthead on the winch. People on 32-footers weigh just as much as people on 40-footers, yet the standard halyard winches on the Endeavour 32 and most other boats in this size range make it impossible for a smaller crewmember to hoist a larger one to the masthead. It is one of the perversities of two-person sailing that the larger of the two—usually a man—insists on going up the mast, while the smaller—usually a woman—cranks the winch. You will also see the same logic prevail in anchoring: the man steers while the woman muscles the anchor up and down. It’s sort of like having the jockey carry the horse around the racecourse.

Shrouds are mounted at the edge of the deck, but since the boat is relatively narrow, this position does not dramatically reduce windward ability. For reaching, it is possible to sheet the genoa to the slotted aluminum toerail.

One change we would make to improve sail handling for cruising would be to add self-tailing winches. The original winches for the boat are too small for easy trimming of a big genoa, and self-tailers are simply a must on any cruising boat. The coamings are wide enough to go up one or two winch sizes.

We also recommend a modern roller-reefing headsail system for cruising. To use it effectively, it will be necessary to install a genoa track inboard of the lifelines on both sides of the boat. As a rollerreefing headsail is reduced in size, the sheet lead must move forward to accommodate the change in clew position. To do this by shifting the position of a snatch block on the toerail is grossly inefficient, and means you will probably never have the lead in the proper position. Even without roller-reefing headsails, the genoa track is a must for decent windward performance.

All Endeavour 32s came with diesel engines, but there is a lot of difference in the engines that were used. In 1975, 1976, and 1977 models, a 12 hp Yanmar diesel was standard equipment. In our opinion, that engine is simply too small for a boat this size. It will be fine in a flat calm, but there’s not enough power to push the boat into any wind or sea. Some boats in the same period were equipped with the Westerbeke L-25 engine, and others with the Yanmar 2QM20. The bigger Yanmar became standard in 1978, but a three-cylinder Universal diesel of about 24 hp was also an option in late-model boats.

With every engine except the single-cylinder Yanmar, performance under power is more than adequate. Our own engine preference would be either the larger Yanmar or the Universal diesel. The most serious complaint voiced about the engine installation is noise. The engine compartment has no sound insulation. Access for service is reasonable.

A surprising number of owners responding to our survey report that the boat is impossible to back down in a straight line under power. Part of the problem may stem from the hull shape, but there is little doubt that much of it comes from the extreme downward angle of the prop shaft. In reverse, the water is thrown against the bottom of the boat, which we suspect does little to help steering.

A two-bladed fixed prop is standard. A three-bladed prop was optional. We wouldn’t want to drag around a three-bladed fixed prop due to the boat’s exposed prop installation. The best choice by far would be a three-bladed feathering prop, which we suspect would also improve the boat’s handling in reverse.

Construction

No owners responding to our survey report major structural problems. There are, however, reports of hairline gelcoat crazing on both the hull and deck. One owner also reported extensive deck delamination. Still another comments that a surveyor found loose tabbing around a bulkhead in the forward cabin. In general, there were a higher than average number of owner complaints about gelcoat.

The frequency of bottom blistering reports is about average for boats generally sailed in warmer waters.

Another odd complaint from one owner concerns flaking gelcoat inside the integral fiberglass water tank under the forward berths. The tank was all but unusable until he cut openings in the top and resurfaced the inside. In addition, once inside the tank he discovered that the internal baffles had come loose. A water tank this far forward in the boat can significantly affect trim as water is consumed. Several owners report that the boat normally sits down by the stern. A full water tank forward will offset this problem, at the expense of increased pitching moment. As a rule, heavy consumables such as water and fuel should be carried near the middle of the boat, where the effect on trim will be minimized.

Several owners mention that their boats are equipped with gate valves rather than proper seacocks. This should show up on any survey. We feel that gate valves are inappropriate for use below the waterline, and should be replaced.

The lead ballast is carried inside the molded fiberglass keel. While this eliminates keelbolts and their associated problems, it means that you should pay prompt attention to any grounding damage to the keel, which could allow water inside the laminate.

On older boats, there is no deck fill for the water tank forward. Later boats do have deck fills, and some owners of older boats also installed them. They’re a good idea, since dragging a water hose below can be a real nuisance, and filling the tank from jerry jugs would almost be guaranteed to cause a mess below.

There are no deck scuppers, so water tends to pool at the low point in the sheer inboard of the aluminum toerail. Likewise, the cockpit scuppers are not flush, so the cockpit does not drain entirely.

Several owners of centerboard versions complain about the exposed centerboard pennant. With the board fully extended, about 3′ of wire is exposed and vulnerable below the boat. This is an unusual arrangement required by the very high aspect ratio board.

In general, owners of the Endeavour 32 feel that the boat is sturdily built, and reasonably finished, with the exception of the large number of reports of gelcoat defects.

For a relatively narrow boat, the Endeavour 32 is roomy. Headroom on centerline is about 6′ 4″. The original stepped cabin trunk—an Irwin design trademark—was replaced in the middle of the boat’s production history with a more modern-looking cabin trunk which is slightly tapered in profile. Cabin headroom was not significantly altered. Headroom is carried well forward over the forward cabin.

There is no door between the main cabin and the forward cabin, which limits privacy when cruising with more than two people. A privacy curtain was an option.

Storage space is used very effectively on the Endeavour 32. Since the water and fuel tanks are located in the ends of the boat, there is a lot of space available under the settees in the main cabin.

The galley is fairly small, which is typical of boats of this period. The icebox, however, is huge—about 10 cubic feet. We’d be tempted to reduce its size by adding more insulation on the inside of the box. Six cubic feet of icebox is more than adequate for a boat this size.

There are three legitimate sea berths on the Endeavour 32: the port and starboard main cabin settees, and the port quarterberth. These berths are all parallel to the boat’s centerline, so your head is neither above nor below your feet when the boat heels. Berths at odd angles to the centerline may be interesting visually, but they’re only functional when the boat is at rest.

Adding overhead handrails in the main cabin would be useful; there are very few things to grab onto in a seaway.

There are 10 opening ports in the cabin trunk of the Endeavour 32. This makes for very good ventilation when the boat is docked or anchored, but does nothing when the boat is underway and the ports are closed. If you leave ports open underway, you’re asking for a drenched interior from a stray wave or powerboat wake.

Ventilation would be greatly improved by installing cowl vents in dorade boxes. We would put two at the aft end of the main cabin, just forward of the dodger breakwater on later models, one over the head, and one over the passageway between the main cabin and the forward cabin. Be careful not to place the forward vents where they will interfere with working at the mast.

The biggest single complaint about the interior of the Endeavour 32 is the lack of a navigation station or chart table. When this boat was designed, navigators of even 40-footers frequently had to work on the cabin table or icebox lid. Today, almost every boat over 30′ has some sort of nav station—a must in the days of electronic gizmos.

All in all, the interior of the Endeavour 32 is comfortable and workable. Joinerwork is of good production boat quality. In later boats, the interior teak is varnished. There’s no  reason you couldn’t do this to an older boat if that finish appeals to you.

Conclusions

The Endeavour 32 is a comfortable, reasonably capable cruising boat. It would make a good coastal cruiser or island hopper. The basic design and construction are sound enough to justify the numerous additions and modifications necessary to make the boat suitable as a limited offshore cruiser for areas such as the Bahamas or the Caribbean.

The most troublesome aspect of the boat is the large number of owners in our survey reporting gelcoat flaws. While in most cases these are cosmetic, they are expensive to repair, and unsightly if not repaired.

Later boats with the more modern deck molding—recognizable by the lack of step in the profile of the cabin trunk—are in our opinion more desirable than the earlier boats. Likewise, look for a boat with a bigger engine than the original 12 hp Yanmar diesel.

To make it easier to handle, you’ll have to spend a fair amount of money on upgrading things such as winches and sail handling equipment. This is only worthwhile if you plan to keep the boat for a while.

The Endeavour 32 is quite a bit narrower than a modern boat of the same length, which makes the interior look a little smaller. At the same time, the beam is carried well aft, which tends to increase space in the cockpit.

Because of the lack of privacy below, this is not really a good family cruising boat for long periods of time. A privacy curtain forward would help, but a door for the forward cabin would be even better.

In appearance, the Endeavour 32 is somewhat dated, yet we would hesitate to call her appearance “classic.” Still, her styling may be a little easier on the eye long after today’s Euroboats have gone the way of tailfins and chrome bumpers.

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CREATING AN ALUMINIUM SAILBOAT FOR BLUEWATER CRUISING

"I have always been fascinated about the idea of sailboat traveling on the ocean energy self-sufficient like the satellite rounding the earth. Producing its own energy by the power of wind, sea and sun.

The Li Yachts project started with my own desire of the boat that will be used in dive expeditions with aim to reach even the remotest locations – and I wanted to do that with freedom of fossil fuels."

Voyage started from my hand drawn sketches. Here drawing the 47 ft centreboarder.

We have designed a 40 ft centreboard pilothouse sailboat made of aluminium and the 33 ft version is in initial sketch stage. My search for the perfect cruising boat lead me to start the design project and a company called Li Yachts in 2015 in Finland. The name was borrowed from my old aluminium yacht and now refers to low impact because of sustainability goals.

The basis for the project was a life-time passion for the sea. Contributing personal factors included my long sailing experience in Nordic waters and the technical and artisan education I had completed earlier. Also my desire to realise long research expeditions on the world’s oceans in the future was part of my personal background.

The strongest motivational factor was the fact that I was not satisfied with the properties of most modern yachts. Based on the above, the need for a totally new sailing boat concept crystallised

Late autumn gale approaches, I'm dreaming of keeping watch from warmth of the pilothouse.

My goal in the Li Yachts project is to create a modern sailboat made of aluminium, the simple and strong tool for bluewater cruising. The main design elements will include safety, practicality and sustainability The new design concept covers production, use and maintenance. Zero pollution and high level of recycling of materials are some of the specific goals. Please read more about the background in The Blog  page.

At a very concrete level, I have understood what changes in design will be needed for the boat of the future when I have been owning, sailing and re-building an old aluminium sailboat called Li built in 1967 , since 2011.

During the years with my current aluminium yacht, I have kept notes on the observations as regards the design elements which could be improved. In many cases they would actually need to be drastically redefined in order to satisfy my dreams as to the perfect expedition sailboat. For more information of these details, kindly see  The Concept  page.

Familiar snowy views while winter sailing at 60°N has given lessons on how well an aluminium sailboat intended for high latitude sailing should be insulated.

I believe I am not alone with my thoughts. I think most experienced sailors would share my ideas. I believe many of them have actually realised there is a need for some basic changes in the design as regards our future yachts.

As the resources of the world are becoming more and more scarce, we need to take this into consideration, in addition to considering the improvements needed in other operational details of a sailing boat.

Please contact me in case you need more information or want to share design or production ideas. At the moment we are working hard to be able to build the 40 ft prototype. The goal is to produce a small serie, which would give reasonable priced opportunities for the first interested sailors.  I hope that a new advanced and sustainable aluminium sailboat will soon sail the seas and oceans of the world.

Fair winds,

Simo Nyrönen

Founder of Li Yachts