sailing yachts with lifting keel

9 Popular Boats With Lifting Keels (With Pictures & Prices)

If you are looking for a sailboat, you might want to consider one that features a lifting keel.

Lifting keels allow you to explore shallower waters, reduce drag, or other advantages when the keel is lifted.

Here are the boats you should check out first!

Table of Contents

What is a Lifting Keel?

As you probably know, the keel of a boat is the longitudinal structural device on the bottom of your hull.

On a sailboat, the keel serves as an underwater fluid machine that helps to minimize the lateral motion of the vessel that is under sail, as well as acting as a counterweight to the lateral force that comes from the wind on the sails which can cause it to roll to the side.

A lifting keel, sometimes known as a centerboard, is a keel that retracts into the hull of a sailboat or pivots and allows for certain advantages.

A lifting keel’s main function is to provide a lift to counter the lateral force that is created by the sails. This allows the sailboat to move other directions other than downwind.

Because these keels lift into the hull, you would be able to take your vessel into shallower waters.

In addition, a lifting keel is ideal for:

• Moving the center of resistance.
• Reducing drag.
• Removing the boat from the water and trailering it.

Centerboards are different than other types of keels, such as a ballast keel, because they do not contribute to the overall stability of the vessel because they are not as heavy and instead they only provide lateral resistance.

Great Boats with Lifting Keels Under $30,000

If you are looking for a boat that features a lifting keel and all that comes with it, you are in luck!

Below, I have compiled a list of great boats that feature a lifting keel.

1. Parker 235 Mini Cruiser

The Parker 235 Mini Cruiser is a small sailboat that should be great for sailors who would like to trailer their boat and explore multiple destinations.

This sailboat exhibits excellence both afloat and while onshore. This features high performance due to its long waterline, stable hull, and a deep low center of gravity.

This boat features a custom boat trailer and is easy to launch and as well as to trailer.

This boat is 23’ 5” in length. Despite its smaller size, there is no compromising with the internal accommodations. The boat featured 2 berths, a galley, and a head compartment.

This boat also has a lifting keel which reduces the draft by 3’ 6”.

This boat can be found used at a price of around $20,000.00.

RELATED: Common Problems With Parker Boats .

2. Hunter 22

The Hunter 22 sailboat is a perfect small daysailer that features the capacity to stay aboard overnight. This vessel is ideal for up to five passengers and features a large cabin.

This boat is 21’ 4” in length and is easy to launch, rig, and trailer when needed.

This boat features a lifting keel that reduces draft by 2’ 6” when lifted up.

This boat has a starting price of $29,990.00.

3. BayRaider 20

The BayRaider 20 manufactured by Swallow Yachts, is a small open sailboat that is ideal for families or sailors who are looking for something stable and safe.

This boat has features that make it ideal for beginner sailors including the ability to keep the ballast tanks full for added stability.

This vessel also features a two-masted ketch that gives an advantage over a single-mast rig because it allows for a quick reduction of sail.

This boat is almost 20 feet long and is light enough to be trailered or handled by one person.

This boat features a lifting keel that reduces the draft by 3.8 feet when lifted.

This boat has a starting price of $27,750.00.

4. Catalina 22 Sport

Catalina strives to encourage sailors who are interested in racing with the Catalina 22 Sport. This boat is small and measures at 23’ 10”.

This boat also has a cabin that features berths for up to 4 adults. This boat is a great choice for those looking for speed and easy maneuverability while still offering the ability to stay aboard overnight.

This boat has a lifting keel that reduces the draft of the boat by 3’ 2” while lifted.

This boat has a starting price of $23,550.00.

5. Marlow-Hunter 15

The Marlow-Hunter 15 is a safe and versatile daysailer for families or individuals who new to sailing. This boat was designed with sailing novices in mind and features high sides, a contoured self-bailing cockpit, and a wide beam that was built for comfort.

These safety features will allow peace of mind for parents and brand new sailors.

This vessel is also easy to trailer, rig and launch.

With a length of 14’ 6”, you can fit a crew of up to four onboard but this boat can also be handled solo.

This vessel features a lifting keel that reduces the draft by 3 feet when lifted.

This boat features a highly affordable starting price of $10,123.00.

Models Between $30,000.00 and $100,000.00:

6. feeling 326.

The Feeling 326 was manufactured between the years of 1987 and 1999. This boat is a cruising sailboat that is 32’ 6” in length and comes with 2 cabins, 6 berths, and 1 head.

This boat is great if you plan to go out for long journeys with multiple people.

Even though this boat is an older model, you should still be able to expect quality sailing from them.

This boat also features a lifting centerboard that reduces the draft by 2’ 7”.

Depending on the year and the seller of the vessel, these boats are selling for an average price of between $30,000 and $45,000.00.

7. Norseboat 21.5

The Norseboat 21.5 is the largest model in the Norseboat line with a length of 21’ 10”. You can get either a Cabin or an Open model for this boat.

You can customize this vessel based on your needs and other factors. You can construct a standard or semi-custom Norseboat.

This boat features a lifting centerboard that reduces draft by 2’ 4” when lifted.

Depending on the layout and chosen options, this boat has a starting price of $37,490.00.

Boats Over $100,000.00:

8. alubat ovni 365:.

From the manufacturer Alubat, the Ovni 365 combines their experience in centerboards and high performance to create a vessel that is both comfortable and high performing.

This boat is great whether you are traveling upwind or downwind. This boat is great for both long trips or for simply cruising up and down the coast.

This boat is 39.17 feet long and features a galley as well as a front and rear cabin.

This boat features a lifting centerboard that reduces the draft by about 5.18 feet when lifted.

Depending on the year and specifications of this vessel, the price could range from $100,000 to $300,000.

9. Southerly 42 RST

Southerly makes a mono-hull 42 RST that is an offshore deck saloon sailboat that was built for cruising. This boat has a length of 42’ 2” and could be equipped with either 2-3 cabins, 4-8 berths, and comes with 2 heads.

This boat is great for taking multiple people out on the water. While these are no longer in production, they were made between the years 2007 and 2017.

This boat has a lifting keel that reduces the draft by 6’ 1” when the keel is up.

Depending on the year and the condition, this boat could cost a minimum of $250,000 but if often over $300,000.00.

10. Gunfleet 43

The Gunfleet 43 is a top of the line vessel with many options for customization. This boat is large and luxurious with a length of 44’ 1”.

This boat features a standard layout with either 2 or 3 cabins, or you could get a custom-built version that also has 3 cabins.

This vessel offers high-end luxurious features that are ideal for long trips and even vessels that you would consider for living aboard.

This line features an optional lifting keel that would reduce draft by 4’ 4” when lifted.

This luxurious and custom-crafted vessel has a large price tag of over $800,000.00.

Keel Types and Performance:

The lifting keel is not the only keel that is available for your vessel. Each keel type is built for a different type of performance.

Some of these keel types include:

• Fin Keel with Spade Rudder
• Fin Keel with Skeg Rudder
• Lifting or Swing Keel
• Twin or Bilge Keel

Make sure before you buy your vessel, you consider the type of performance you are looking for on your vessel and research the ideal keel for you.

This can help you when selecting which boat to purchase and will help you get the maximum performance and use out of your vessel.

If you do not buy the boat with the proper keel type , then you will not get the necessary performance needed. Some keels are made to be more stable, some are made to be more versatile, and some such as the lifting keel is made to be able to be optional depending on what type of activity you plan to achieve in your vessel.

A lifting keel is a great option for those who are looking for shallow draught, speed, efficiency, and the ability to plane your vessel early.

The lifting keel is not ideal if you are planning to use it to offer additional stability. If you are looking for additional stability, you will want to look at different and heavier keel options.

If that sounds ideal for you, you will benefit from one of the many daysailers or overnight vessels that offer a lifting keel listed above.

Click to share...

Robb Report

8 Fascinating Facts About ‘Kokomo,' the Lightning-Fast 192-Foot Sailing Superyacht

Posted: March 15, 2024 | Last updated: March 15, 2024

2.-SY-Kokomo_Sailing_1-064

The 192-foot Kokomo was the second largest sloop in the world when it launched from New Zealand’s Alloy Yachts shipyard in 2010. It remains the largest fast-cruising sloop available for charter. The yacht’s commissioning owner Lang Walker (who died in January 2024) was a seasoned sailor who gave all three of his yachts the same name.

The first was a 131-foot sloop, which Walker replaced five years later with a 171-footer. The same day he took delivery of his 171-foot sloop, he placed an order for the third and final 192-foot Kokomo, which he planned to use for racing and cruising around the world. He also kept the same design team for all three yachts, with exterior and naval architecture by Ed Dubois and interior by UK’s RWD.

The reference to the yacht’s name has had different explanations over the years, ranging from the pseudonym of a composer whose music Walker played as a child to a nod to the Beach Boys’s song from their 1988 album Still Cruisin’, which references a fictional utopian island called Kokomo. The island fantasy was brought to life in 2011 when Walker acquired a private island in Fiji’s Great Astrolabe Reef and named it Kokomo.

Here are eight unknown facts about one of the most game-changing sailing yachts on the water.

You’re Going to Need a Bigger Boom

When Kokomo was launched, she was the second-largest sloop in the world and carried the largest set of sails made by Doyle Sails in New Zealand. The 23,971-square-foot asymmetric spinnaker is half the size of a professional football field, while the 9,688-square-foot mainsail needs a crane to lift it. Because of the gargantuan size of the sails, the designers entered a new era of spar and winch design, having to “reinvent” the deck equipment—winches, mast, boom, rigging and sails—to cope with the 31.6-ton load on the genoa sheet and 32-ton load on the main sheet clew. The 244-foot carbon mast is the largest ever made by Southern Spars.

A Hidden Lifting Keel

The yacht’s 130-ton lifting keel is one of its most impressive features, though it’s largely left to the imagination. The interior layout is carefully designed so that the keel structure remains hidden. Dubois Naval Architects positioned the keel box to come above the main deck, serving as a partial separation between the bridge and the main salon (see inset). Kokomo was only the second yacht to be fitted with a lifting a keel, the first being 246-foot M5 (ex-Mirabella V), the world’s largest single-masted sailing yacht. This innovative design shortens Kokomo’s 28.5-foot draft when the keel is fully extended, to just 15 feet for shallow waters.

Now You See It, Now You Don’t

Kokomo might be big on technology, but never at the expense of design. The wheelhouse has fold-down computer screens that conceal the navigation equipment when not in use, converting to beautiful carbon counter tops. This design sleight of hand transforms a highly technical area into a tony lounge. It’s a theme that extends to the foredeck, where the yacht’s two tenders are concealed in dedicated lockers. There’s also a fully retractable tender crane that launches the tenders from either side of the boat but disappears out of sight when guests are using the Jacuzzi. “The designated deck lockers were an advanced feature at the time of her launch,” says Wynne, adding that another bonus is that diesel tanks are fully available. “The tenders can be fueled onboard before launching.”

It Takes Just A Few Good Sailors

Kokomo can accommodate up to 10 crew in total, but theoretically it only takes two to sail—a helm person and a sail trimmer. That sounds almost impossible given the size and complexity of yacht. But all sails are controlled by joystick on the flybridge. And when the boat is in full-on racing mode, there are control stations on both sides, providing visibility of the sails. Thanks to the hydraulics system, the mainsail can be hoisted and lowered on a wireless remote control. Of course, maneuvers like stowing the massive genoa can never be automated. That’s a job for a half-dozen good sailors.

Art On Board

The hallway that leads to the owner’s cabin is lined with a mosaic tapestry made from sea glass woven together with wire. Backlit to create an unusual effect, it’s just one of the eclectic works of art that decorates the interior. The main salon also has a stunning and colorful work of glass art as another example.

Interior Matters

Kokomo is not all tech features. The yacht’s modern interiors combine dark wood floors and calming cream furnishings start in the main salon and continue across the five guest cabins. Penned by British studio Redman Whiteley Dixon, the design carefully wraps around the lifting keel without sacrificing or impeding on any interior guest space. The yacht accommodates up to 10 guests in a master suite, VIP, one double cabin and two twins. There are other accommodations for up to 10 crew. On the foredeck, the Jacuzzi brings another element of outdoor entertainment, bolstered by a sunken cockpit.

World Traveler

The mandate issued by Walker was to create a yacht that was a “quantum leap forward” from his previous yachts, with superior sailing characteristics and guest comfort. The mast’s height is too tall to sail through the Panama or Suez Canals, which meant it would have to be designed to sail around Cape Horn and the Cape of Good Hope to reach the Caribbean and Mediterranean. The maiden voyage took the yacht from the New Zealand shipyard to Australia, New Caledonia, the Solomon Islands, and Fiji. It also spent time at Walker’s private island (pictured above), also named Kokomo. The vessel has since spent many years exploring the Caribbean and Med. It’s based in both regions during the respective cruising seasons, with charters available through Cecil Wright.

More for You

Aileen Cannon's 'Extreme Error' Could See Her Thrown Off Trump Case: Lawyer

Billionaires are cozying up to Trump

AOC takes heat over 'RICO is not a crime' comment in Biden impeachment probe hearing

Dozens sue saying Ozempic, other weight loss and diabetes drugs cause harmful side effects

Former Steinhoff CEO Markus Jooste dies by suicide, reports say

JK Rowling has exposed Scotland’s chilling descent into dystopia

Kyle Rittenhouse Abandons Q&A After Being Confronted About Organizer's Racist Remarks

Donald Trump's Running Out of Time to Sell Mar-a-Lago

House Democrats are lending the GOP speaker a hand — and they don’t mind

‘Heaven’s vengeance is slow but sure’: New ICC president says Putin will answer for war crimes

13 Things You Should Never Clean with Windex

How much did Shohei Ohtani's interpreter earn before being fired?

The Hard-To-Find Bourbon That's Somehow Available At Costco

Alina Habba responds to claims Trump is seeking foreign legal funding

18 Most Common Reasons Why Women Leave Their Husbands

New hope for sisters trapped in their bodies

Lauren Boebert Hit With Brutal Fact Check

Ukraine drones 'attack' main base of Putin's long-range strategic bomber fleet deep inside Russia

Dollar Tree is closing 1,000 stores. Here's where they are located.

Ex-Prosecutor Stunned By Trump's New Legal Claim: 'Doesn't Make Any Sense At All'

Yachting World

• Digital Edition

Ovni 370 review – go-anywhere shoal draught cruising

• Toby Hodges
• July 19, 2022

Ovni’s smallest new model, the Ovni 370 is packed with smart thinking to appeal to those who want to cruise all waters, says Toby Hodges

Product Overview

Manufacturer:, price as reviewed:.

With its distinctive range of bare aluminium lift-keel cruisers, Alubat’s Ovni brand has been synonymous with bluewater cruising since the 1970s. After a barren period it came out with a contemporary new Ovni 400 two years ago and has followed that up with an arguably more innovative and approachable shorter model, the Ovni 370.

The Ovni 370 shares some of the styling of the 400, in particular the angular and voluminous look with full forward sections, so it shan’t win any beauty prizes. However, Ovnis have always attracted more for practicality than aesthetics, and this model certainly packs in the features for its length.

The Les Sables-d’Olonne yard wanted the Ovni 370 to have a true deck saloon, a panoramic heart as opposed to the (optional) lower single level format of the 400 – clearly a popular decision which all 17 buyers so far have chosen.

Once you accept you need to climb up and down steps to get through the boat, the benefits are multifarious. This is particularly true of the Ovni 370, which has many of the staple ingredients bluewater sailors will look for even at this size, including a deep, protected cockpit, a pilot berth in the deck saloon, wet hanging stowage and a proper navstation.

Another benefit is the stowage space below a deck saloon – enough for 300lt water and 300lt diesel tanks in the Ovni’s case.

The transom skirt with arch above is a recipe Ovni has perfected. A block and tackle system is used for the dinghy and the liferaft has a prime central location. Photo: Andreas Lindlahr/EYOTY

Built for distance

Alubat says the design development began after it received many requests for its old 365 model. However, that was a Category B (offshore) rated design and the majority of its clients today are couples who want to go long distances. Nina Karlseder from Création Brouns Architecture, one of the five designers who worked on the Ovni 370, explained the major challenges involved with trying to make a Category A yacht with a lift keel at this size and volume.

The keel, which lifts completely inside the boat to allow for beaching, needed to be kept light enough to raise manually yet heavy enough for stability purposes when lowered.

Meanwhile the hull needed to be stable and light in the right places. So a light aluminium plate was chosen, milled into a NACA profile, and over three tonnes of ballast was used in the hull to make up the necessary righting moment. The 260kg ballasted centreboard has a safety release in case of grounding and a plate protecting the bottom of the boat for drying out.

The result, the yard argues, is the least expensive new Category A lift keel yacht. But what is it like under sail?

The voluminous bow and hard chines create significant living space and helped the designers achieve a prime goal of meeting Category A ocean-going requirements. Photo: Andreas Lindlahr/EYOTY

Sailing the Ovni 370

We had a very pleasant late afternoon sail off La Rochelle in 8-9 knots true wind. As mentioned, the centre of gravity needs to be strictly controlled with a centreboard design, hence the relatively short rig and a modest 33m2 Solent jib. The only option for added oomph here is a laminate square-top main and running backstays, as the test boat sported.

Still, the Ovni 370 is not blessed with a shape designed for pointing or upwind speed. Her angular shape has plenty of wetted surface area and in these single figure windspeeds, 4-4.5 knots were average beating speeds – and at wide tacking angles.

As we know, though, no well-planned cruise should involve sailing to windward, hence we spent the majority of the time under Code 0 averaging over 5.5 knots reaching at 60° to the apparent wind. The helming experience was enjoyable – nice and light on the dual rudder steering with good balance and some feedback.

The views and natural light benefits of a deck saloon. The linear galley has good stowage and solid fiddles, and ajdoins a practical navstation aft. Photo: Christophe Favreau

The helmsman has a snug area between the aft end of the coamings and the davits with clear sightlines forward, while the primaries are within easy reach with handy tailing lockers under the cockpit benches. The mainsheet and reefing lines are led to the coachroof winches, which is a good, protected position for a crewmember, but it does mean that those sailing short-handed will need to rely on the autopilot while they trim sails.

A fixed aluminium dodger is an option, but the very deep cockpit already offers excellent protection behind the high coamings and sprayhood (which links to the bimini on the arch). Sturdy handrails and toerails, good non-slip and a high coachroof make it feel safe and robust around the deck. The foredeck feels huge, and a double bow roller allows the setting of two anchors.

Generous berths and plenty of light in both cabins. Photo: Christophe Favreau

Ovni 370 accommodation

The two-cabin plan makes excellent use of the interior space. The saloon layout is particularly smart, with a table that drops to create a large daybed or pilot berth. The latter uses a carbon pole for a backrest (with cushions), which can be moved to double as a leeboard.

A large wet hanging locker is located beside the companionway, and the decision to split the heads and shower (more potential wet hanging) works well. The heads links through to a work/utility cabin aft, where a bunk can be fitted, but this primarily serves as a wonderful amount of stowage for long term cruisers.

Abundant natural light and lots of light trim make for a modern, fresh look, albeit with a few sharp edges on the window surrounds and bulkhead coverings on the prototype we sailed. The interior is insulated with sprayed cork above the waterline and owners can choose whether to leave this exposed or cover with headlining.

The port aft cabin is capacious, with tall headroom, wide berth, good stowage and a large porthole. Headroom reduces to 5ft 10in in the entrance to the forward cabin. On the test boat this had an extra wide but relatively short (1.85m) berth, and a vast shower room with space for a washing machine abaft the main bulkhead.

Ovni has since addressed the balance of these areas, pushing the bulkhead further aft to increase the berth length – a bonus of building in aluminium over a fixed mould.

If you enjoyed this….

Yachting World is the world’s leading magazine for bluewater cruisers and offshore sailors. Every month we have inspirational adventures and practical features to help you realise your sailing dreams. Build your knowledge with a subscription delivered to your door. See our latest offers and save at least 30% off the cover price.

The concept and design of the 370 is commendable. It fulfils a valuable and obviously popular niche. It’s packed with dependable features, feels robust throughout and offers a more affordable and approachable size level for go-anywhere shoal draught cruising. So much so it makes you wonder who might buy the larger 400 now. It is comparatively good value for an aluminium cruiser, however the price has already increased 13% since last year due to materials costs. It has a quirky, utilitarian style, and is not for those who wish to get places quickly (particularly upwind). But for a new distance cruiser at this size for modest paced sailing in comfort it would make my shortlist.

• OC Wally Cento
• 84 Mini Maxi
• IMOCA Open 60
• Consultancy Services
• 30m Blue Water Cruiser
• 25m Explorer Yacht
• 24m Fast Cruising Catamaran
• 23m Performance Cruiser
• 20m Explorer Yacht
• 20m High Performance Cruiser
• 18m Blue Water Cruiser
• 15m Performance Cruiser
• 15m Explorer Yacht
• 12m Explorer Yacht
• Multihull Design
• 18m Explorer Yacht
• 40m Blue Water Cruiser
• 40m Cruiser Racer
• 33m Performance Cruiser
• 30m Wally Cento
• 24m ORCsy Racer Cruiser
• 24m Day Sailer
• Carbon Component Design
• Yacht Performance Development
• CFD and Model Testing
• Twin Rudder Steering Systems
• Custom Deck Hardware
• Modifications and Refit
• VPP Routing and Sail Analysis
• Classic Yacht Refit & Optimisation
• Naval Architecture
• Engineering
• Rudder Design
• Brokerage Services
• 'Seahorse Magazine' #192
• Lucent #180
• Influence #171
• 'Eora' #169
• 'The Three Brothers' #168
• 'Edenred' #165
• Polka Dot #154
• 'Teata' #148
• ‘Sensei’ #131
• 'Sabre II' #93
• French Pineapple #79
• 'Letto Di Pletto' #47
• 'Mowgli' #41
• 23.8m Ultime Trimaran
• 20.7m Orma Trimaran
• 18.28m Orma Trimaran
• 16.75m Cruising Catamaran
• 16.1m Cruising Catamaran
• 12.8m Crowther Shockwave Catamaran
• 9.1m Seacart 30 Trimaran
• 26.3m Aluminium Sloop
• 22.38m Aluminium Classic Yacht
• 21.0m Steel Schooner
• 21.0m Aluminium Cruising Ketch
• 20.0m Aluminium Explorer Yacht
• 20.0m Luca Brenta Racer Cruiser
• 19.6m Aluminium Bluewater Cruiser
• 19.2m Aluminium Lifting Keel Sloop
• 18.23m Mylius Racer Cruiser
• 16.0m Sly Cruiser Racer
• 14.5m Aluminium Cruising yacht
• 13.87m Wooden Motor Sailer
• 11.6m Classic Pilot Cutter
• 25.25m Reichel Pugh Maxi
• 18.28m IMOCA 60 One Planet
• 18.28m O Canada IMOCA Open 60
• 18.28m Come in Vendee Open 60
• 18.23m Mylius FD Racer Cruiser
• 15.84m TP52 Racing Yacht
• 15.25m Pegasus Open 50
• 10.89m Figaro 3
• 10.1m Figaro 2
• 14.5m Aluminium Cruising Yacht

Sun Odyssey 410 Lifting keel

Sailboat specifications.

• Last update: 20th March 2020

Sun Odyssey 410's main features

• 2019: Cruising World - Boat of the Year: Midsize Cruiser

Sun Odyssey 410's main dimensions

Sun odyssey 410's rig and sails, sun odyssey 410's performances, sun odyssey 410's auxiliary engine, sun odyssey 410's accommodations and layout, sun odyssey 410's saloon, sun odyssey 410's fore cabin, sun odyssey 410's aft cabin.

Similar sailboats that may interest you:

Yachting Monthly

• Digital edition

How keel type affects performance

• Chris Beeson
• December 2, 2016

James Jermain looks at the main keel types, their typical performance and the pros and cons of each

A fin keel and spade rudder configuration gives high pointing but can be sensitive on the helm Credit: Graham Snook/YM

James Jermain has tested hundreds of yachts in his 30 years as Yachting Monthly’s chief boat tester

The performance and handling of a yacht depends on many things, but perhaps the most important single feature is the shape of the hull and the profile of the keel. Over the years hulls have become shallower and keels narrower, but for many types of sailing this progression is not necessarily progress. Of the various shapes that have evolved, each has its own advantages in different circumstances. Here is a run-down of how they may fit your sort of sailing.

FIN KEEL WITH SPADE RUDDER

A low wetted surface area and aerofoil shape means speed and agility

The most common modern option, usually combined with light but beamy hulls with high freeboard.

GENERAL AND TO WINDWARD

• Low wetted surface and good aerofoil shape means good speed, high pointing and quick tacking
• Light steering
• Best designs can slice through heavy seas in reasonable comfort
• High volume, light-weight designs can be lively and tiring in heavy weather
• Flat sections can cause slamming
• Less steady on the helm, requiring more work and concentration
• Strong tendency to round-up when hard pressed
• Generally require earlier reefing
• Can be unstable when hove to
• Quick to surf and may even plane
• Can broach easily and suddenly
• Can be directionally unstable and hard to control in heavy conditions

UNDER POWER

• Handling is precise and turns tight and quick
• Some handle almost as well astern as ahead
• Limited lateral area so susceptible to beam winds at low speeds
• An unattended helm can slam over suddenly

FIN KEEL WITH SKEG RUDDER

The skeg running aft protects the rudder and improves tracking under sail and power

Similar to above but with some key differences.

• Skeg provides better support for the rudder
• Tracking under sail or power is improved
• There is less chance of damage
• More wetted surface so potentially slower
• Objects can get stuck between rudder and skeg
• Limited balancing can make helm heavier

The mass of a long keel is often more seakindly and will carry way well.

The traditional option, usually found on pre-1970s designs.

• Good tracking
• Slow, soft, comfortable motion
• Drive powerfully through short seas but can be wet
• Carry way through tacks
• Resist rounding-up
• Heave-to well
• High wetted surface area and a poor aerofoil shape, so speed reduced, tacking slow, leeway increased and pointing ability reduced
• Long ends can cause hobby-horsing
• An unbalanced hull or rig can cause heavy helm
• Track well and very resistant to broaching
• Very stable in heavy conditions
• Reluctant to surf (a mixed blessing)
• Carry way well
• Track straight
• Heavy construction can reduce vibration and noise
• Large turning circle ahead
• Unpredictable and hard to control astern

LIFTING OR SWING KEEL

A lifting keel enables beaching, but beware of stones jamming the plate

The ultimate shallow-draught option.

• A fully retracting keel offers shallowest draught
• A well-designed lifting keel can be very efficient and fast
• Grounding on anything other than soft mud or sand can damage an unprotected hull
• Stub keels offer better protection but are less efficient and prevent level drying out, except in soft mud
• Stones and dried mud can jam the lifting plate
• Internal keel boxes reduce accommodation space
• Directional stability is poor
• Early surfing and planing
• Control can easily be lost in strong winds
• Good performance and handling with keel down
• Directional control increasingly poor as the keel is raised

TWIN OR BILGE KEEL

A bilge-keeler will dry out upright on a flat bottom

A popular shoal-draught option in Britain, less so abroad.

• Shallower draught
• Dry out upright on a flat bottom
• Good protection when grounding
• Good designs are better to windward than long keels, almost as good as fins
• Pointing and speed to windward is reduced, considerably so in older designs
• When well heeled, waves can slap under the windward keel
• Can topple over if one keel finds a hole or soft ground

Modified water flow over the wing keel foot can give the motion of a longer, heavier boat

Once popular, now largely replaced with various types of bulb.

• Reduced draught
• Low CoG means good righting moment
• Modified water flow over keel foot means greater efficiency and gives the motion of a longer, heavier boat
• More likely to pick up lobster pots, etc
• Risky drying out
• Weed and barnacle growth under wings difficult to remove

Enjoyed reading this?

A subscription to Yachting Monthly magazine costs around 40% less than the cover price .

Print and digital editions are available through Magazines Direct – where you can also find the latest deals .

YM is packed with information to help you get the most from your time on the water.

• Take your seamanship to the next level with tips, advice and skills from our experts
• Impartial in-depth reviews of the latest yachts and equipment
• Cruising guides to help you reach those dream destinations

Follow us on Facebook , Twitter and Instagram.

What are the pros and cons of different keels?

We all sail for different reasons, in different cruising grounds and use our yachts differently, so it makes sense that there is no one-size-fits-all keel design. At Sirius, however, we like to make the perfect yacht for each individual owner. One of the ways we serve our customers is our choice of keels – at least six different options for each model. It’s one of the ways we stand out – or should that be stand up?

We offer three styles of keel: fin, twin and lifting swing keel. All of our keels excel in many ways, but every design does have drawbacks – this is not unique to Sirius, but the keel affects the way you use the boat, so it’s important to choose the right one for you.

These are the keels we currently offer:

Standard Fin (310DS, 35DS, 40DS) Performance Fin (310DS, 35DS, 40DS) Medium Fin (310DS, 35DS, 40DS) Shallow Fin (310DS) Shallow Twin (310DS, 35DS, 40DS) Performance Twin (35DS, 40DS) Lifting Swing Keel (310DS, 35DS, 40DS)

Does the choice of keel compromise ocean capability?

For Sirius yachts, absolutely not. It’s important to realise that choosing one keel style over the other does not affect the yacht’s righting moment or compromise its ocean-going capabilities at all!

Whichever keel you choose, deep or shallow, twin or fin, they all have the same stability. This is achieved by putting more weight in the bulbs of the shallower keels as the shorter lever can be balanced with higher weight. Most of the blue water cruising and circumnavigations in Sirius Yachts have been made with twin-keel or reduced/shallow fin keel yachts.

Does keel choice affect performance?

As our shallow keels are heavier the weight dampens the yachts’ motion at sea, but as a downside, you have more weight to move with sails or engine. Once you’re moving there isn’t a difference but when tacking or gybing, or when not steered well, you will lose a bit in sailing performance. The shallower draught yachts also lose a few degrees to windward compared to their deeper keeled sisters, but they are still good all-round performers. Our customers with racing backgrounds always try to go for a keel as deep and light as their sailing area permits, either with a single or twin keel.

Pros and cons of fin keels

The standard keel on our yachts is a fin keel. Most sailing boats today use a fin keel because it gives a good all-round performance on all points of sail. By keeping the ballast lower it gives the most comfortable motion. The main downsides are that the draught (the depth of water required to stay afloat) is the greatest, and it’s very important to avoid running aground on a falling tide. Fin keel boats cannot dry out without additional support, either from a harbour wall or by fitting a pair of beaching legs. Some fin keel yachts are not built strongly enough to stand on their keels when out of the water, so they can’t dry out alongside a harbour wall and they need to be kept in a special cradle when stored ashore to avoid the risk of the hull deforming under its own weight. By contrast, all Sirius yachts can stand on their keels for any length of time with no problem at all.

We offer four types of fin keel. The standard fin is available on the 310DS, 35DS and 40DS and is fully cast-iron. It offers the best value, good performance, and excellent responsiveness. It is the deepest of our fixed-keel options, so if you want less draught you may want to look at our other fin keels.

We also offer a performance fin keel for all our models. This uses a cast iron fin with a lead bulb at the tip (bottom). The structural strength of cast iron means the fin is the slimmest profile, but lead is denser than iron so the same volume of lead will weigh around 1.4 times more than cast iron, giving more righting moment. The heavier, softer lead down low has less volume in the bulb so achieves a slimmer profile with less drag and therefore better performance.

A lead bulb is also safer if it hits something. Lead can absorb 60% of the energy in flexing and deformation so that only 40% of the force will be transferred to the laminated structure of the keel reinforcement. A lead bulb is very forgiving and easy to reshape and will not start to rust where the coating is damaged. We can use less volume of lead than iron, and achieve better stability than a wholly cast-iron keel. We can also reduce the depth of the keel and retain excellent stability. However, lead is more expensive than cast iron and the bulb must be attached very securely to the iron fin, so this option does cost more.

If you want less draught, we also offer a medium fin. This reduces the draught of the 310DS and 35DS by around 40cm/1ft 4in and 55cm/1ft 9in on the 40DS. Like the performance fin, it uses a cast iron fin with a lead bulb. To retain the keel’s grip in the water it has to have a longer chord (the distance from fore to aft). While this gives the boat better directional stability, it does make her a little less responsive and a little slower to manoeuvre.

On our 310DS, we offer a shallow fin option – a special version for very shallow cruising grounds. This fin keel offers the least draught of any of our fixed keel options at 1.15m/3ft 9in and draws 10cm/4in less than the twin keel version. The keel has a significantly longer chord (2.24m/7ft 4in compared to 0.7m/2ft 3in of the standard keel) so she has the reassuring directional stability of a long-keeled yacht but with better manoeuvrability.

Pros and cons of twin keels

Our twin keels are the most popular option. About 70-80% of all Sirius Yachts are delivered with them – and on the 40 DS it’s 90%. Some folk still believe there is a big performance penalty with twin keels. In the past this used to be true but it’s no longer the case with modern twin keel designs, from Sirius at least. We have conducted many two-boat comparison tests, often battling for hours, by ourselves, with owners, and for sailing magazines and we have found that there may only be one or two boat lengths of difference at the end of a long windward leg, if at all. At the end of many of these comparison tests, the crews could not point out which of the boats had the twin keel.

If you cruise tidal areas, twin keels will reward you time and time again. Not only do they give you a shallower draught than the typical fin keel, they also give you the ability to dry the yacht out, whether that’s for a motion-free night’s sleep, to explore cruising grounds others cannot reach, or just for cheaper mooring and maintenance costs.

We offer two styles of twin keels; performance and shallow draught. Both options have a cast iron fin with a lead bulb. The performance keels have a deeper draught and a thinner chord so they act and feel a bit livelier when sailing and manoeuvring. The shorter keels have a longer chord, but give you the ability to navigate shallower areas. Like all keel designs, twin keels do have some downsides. They are more expensive than fin keels, and when you’re sailing fast in choppy seas at a steep angle of heel, you can occasionally get a slapping sound when an air pocket is caught and pressed out under the windward fin. Lastly, we’ve yet to meet an owner who enjoys antifouling between the keels. Thankfully it only has to be done once a year and with twin keels you might get away with doing it less frequently. A twin keel yacht can be kept on a drying mooring, where fouling is reduced because the hull spends more time out of the water. And when you’re off cruising it’s easy to give the bottom a quick scrub while the yacht is dried out.

Our yachts will happily sit on their keels on a hard surface, like a drying grid, or for winter storage but on softer surfaces we use the rudder for additional support. The rudders on our twin keel yachts are specially reinforced for this: we use a Delrin sheave to take the weight of the hull and the tip of the rudder has a wide, foil-like foot to spread the weight.

A lifting swing keel

We are one of a few manufacturers to offer a lifting swing keel. There’s a lot of confusion with the term ‘lifting keel’, it seems to encompass all yachts that have centreboards, variable draught, lift-keels or swing keels. To us, a lifting keel boat should have all the ballasted weight of the boat in the keel, and that keel needs to be retracted into the hull.

Technically, a lifting keel is a keel that can be lifted or lowered and gives the boat the ability to dry out when the tide goes out. A lift-keel is a ballasted keel that raises and lowers vertically. A swing keel has a ballasted fin that has a single pivot point and the keel swings up into the boat. There are other variants of design, for example some have a lifting keel to reduce the draught of the vessel but they cannot dry out on it, others have a ballasted keel and ballasted grounding plate. All these examples have a keel that does two things: keep the boat upright and stop her sliding sideways. Our swing keel is designed with a NACA profile to give the most efficient performance.

Centreboard yachts have a centreplate to provide grip in the water and reduce leeway. The plate may carry only 15-20% of the ballast but the rest of the yacht’s ballast is within the hull and/or in the grounding plate. This is called an “integral keel” and is more common as it’s less complicated to build. The lower a yacht’s ballast is located, the better her stability, the more comfortable her motion and the better she stands up to her sail area. The most efficient place for the ballast is as low down on the deepest keel possible – this is why race boats have deep skinny keels with large torpedo-shaped bulbs on the bottom, but they don’t make practical cruising sailboats.

Our keel designs have more weight in the tip (bottom) – using a bulb on the fin and twin keel design and flaring the lower sections on our lifting swing keel yachts. You don’t have this with centreboard and integral keel yachts.

It might be surprising, but a lot of owners come to us thinking that a lifting swing keel is the best option for them. Sometimes it is, but about 98% of customers who approach us because we offer swing keels end up sailing away on a twin-keel Sirius.

The downsides of a lifting keel

A lifting swing keel does give you more cruising options. It will lift should you run into something and, of course, it gives you the shallowest draught. But that difference is only 40-50cm (1ft 4in to 1ft 8in) less draught than our shallow twin keel option. The lifting keel increases the complexity of the build and the final cost of the yacht; it also sometimes limits the internal layout and engine drive options, and you need to have twin rudders too. Twin rudders make the boat less manoeuvrable in a marina – you can opt for a third central rudder which does improve the handling, but again comes at an extra cost.

On the lifting swing keel, 40 and 310 owners are restricted to the use of a shaft drive, which is less efficient and you have to accept a bit more noise and vibration. When drying out, the drive is more vulnerable to damage, whereas it’s totally clear when taking the ground on twin keels. With twin keels, you also do not have to worry about something sticking out of the beach or stones lying around because the hull is high above the ground. With the hull up high, you do not have to dig a hole in the sand and slide down on your stomach to check or change your anodes as you would on a swing keel.

Sailors who are attracted to the idea of a lifting swing keel should carefully consider the pros and cons to compromise the least. When owners understand the repercussions of choosing a lifting keel yacht, many of them feel it restricts their options too much. They could have a lifting keel or they can sail with twin keels, dry out, have better close-quarters handling and save money in the process. Unless you need the shallowest possible draught – 0.75m (2ft 5in) on the 310DS, 0.9m (2ft 11in) on the 35DS or 0.95m (3ft 1in) on the 40DS – a twin keel might well be a better option.

How are the keels attached?

The design of the keel is important but the way they are attached is just as important, if not more so. All of our fixed keels are through-bolted. Every keel has a wide flange at the root (top) of the keel and the flange sits into a reinforced recess in the hull. The flange and the recess work together to spread the loads of the keel/s into the yacht’s hull. The keels are bonded and bolted to the hull. We use up to twelve 20mm and 24mm bolts (per keel) and these go through rolled stainless steel backing plates inside the hull to spread the bolt loads evenly into the fully laminated keel grid which goes all the way up to the chainplates and also carries the mast support.

For our lifting swing keel, we laminate a substantial keel box as part of the hull to accept the keel and the hydraulic mechanism needed to retract the keel into the hull. Unlike most other boatbuilders we don’t use a grounding plate to take the weight of the yacht, our yachts sit on the length of the leading edge of the keel. Integral keels with the majority of the ballast in the grounding plates move the ballast (weight) from low down in the keel to inside the hull. This negatively affects the stability as the more weight you have lower down, the better.

We also don’t like grounding plates because they bring the hull in contact with the ground. By leaving 10-15 cm (4-6in) of the keel out of the hull when it’s retracted, most of the time the hull is kept clear of the beach and anything that could damage it.

The problem with too much form stability

With only 15-12% of their ballast in the centreboard, most lifting-keel yachts cannot rely on keel weight for stability so their hulls need to be designed with extra form stability instead. This means the hull sections have to be much wider and flatter. A flat-bottomed hull is not what you want for a comfortable ocean cruising yacht; it isn’t sea-kindly or easy to steer in waves and gusty winds conditions. We don’t make that compromise at Sirius. With all the ballast in the swinging part of our swing keel design, we can use the same seaworthy, ocean-capable hull shape designed for our yachts with fixed keels.

If you don’t know which keel would be best for your Sirius, contact us to discuss the type of sailing you intend to do, where you want to sail and what your cruising aspirations are.

General Manager – Torsten Schmidt SIRIUS-WERFT GmbH Ascheberger Straße 68 24306 Plön/Holstein

Fax: 0049 – 4522 – 744 61-29

Receive regular updates from Sirius Yachts

Subscribe to our email newsletter

Privacy Overview

• Italia: +39 339 177 4412 International: +39 335 669 4377
• info@thekeelservant.it

History of an idea

As part of a new 41‘ cruise sailing yacht project, one of the conditions was the adoption of a mobile drift, for low seas, without precluding good sailing and displacement performance light. Read more >>

Revolution in lifting

The Keel Servant is an innovative lifting system for telescopic keels. The mechanism is suitable for a wide range of sizes for telescopic keel systems, consisting of a fixed fin and a lifting bulb. Read more >>

Models & custom

The Keel Servant also offers the possibility to: • develop custom solutions • design and supply the fixed fin, the bulb and the shell Read more >>

72′ indoor TEST

A gigantic brand new telescopic keel mod. 30 has been subjected to stress-tests in our facilities.

METS TRADE 2022

TKS exhibits at the 2022 edition of the METS TRADE fair. Stand 12.234.

72′ Grand Soleil

Two beautiful GS 72 Grand Soleil are going to be equipped with massive telescopic keels.

Tofinou: 5 keels in 2023

Even the 12 meters adopts our lifting system.

72′ new project

At the moment we are only able to reveal that we are working on a new big telescopic keel for a 72′ boat.

METS TRADE 2021

TKS exhibits at the 2021 edition of the METS TRADE fair. Stand 05.264. It will be possible to view a functioning telescopic keel.

60′ Soto Acebal

A new, big, project in collaboration with the Argentine designer Javier Soto Acebal.

43′ NEO Yachts

A new challenge: to build a telescopic keel with draft 290/140 for the new NEO 43′

Tofinou: 12 keels delivered

We have proudly equipped 12 Tofinou with our new telescopic keels!

TKS, even beaching-proof!

A Tofinou equipped with TKS 2,5 runs aground near the entrance to the port of La Baule Le Pouliguen … But fortunately more fear than harm!

Salon Nautic

The Keel Servant will present his new keel TKS mod. 2,5 at the Salon Nautique de Paris, in partnership with the shipyard Latitude 46.

TKS & Tofinou 9,70

July 2019, Tofinou 9,70 was launched by the leading French boatyard Latitude 46 with our lifting keel mod. 2,5.

boot 2018 Dusseldorf

We will be happy to arrange a meeting to visit you in your stand and present you, in no more than 30 minutes, our solution during the BOOT fair in Düsseldorf on January 22 and 23!

POR FESR 2014-2020

The Keel Servant srl si è aggiudicata l’assegnazione di contributi nell’ambito del bando POR FESR 2014-2020. Attività 2.2.a.3 DGR n. 650/2017, per il progetto intitolato “Start-up sales booster”.

SYAT · 2017

The Keel Servant has been selected between the products to be presented in the Ships and Yachts Advanced Technology 2017 of Monfalcone ITALY.

Salone Nautico 57° ed.

The Keel Servant srl took part in the 57th International Boat Show, staged from September 21st to 26th, 2017.

• Sailing yachts

Sailing yacht with lifting keel

51 yachts match you search criteria.

• Length 9.53 m
• Beam 2.99 m
• Draft 2.00 m

• Length 11.70 m
• Beam 4.02 m

• Length 9.95 m
• Beam 3.42 m
• Draft 1.65 m

• 1997 - 2002
• Length 10.44 m
• Beam 3.20 m
• Draft 1.46 m

• 2005 - 2014
• Draft 1.44 m

• 2014 - 2015
• Length 11.58 m
• Beam 3.66 m
• Draft 1.70 m

• Length 13.75 m
• Beam 4.25 m
• Draft 2.20 m

• Length 16.80 m
• Beam 5.18 m

• Length 16.48 m
• Beam 4.75 m
• Draft 2.44 m

• Length 12.09 m
• Beam 3.81 m
• Draft 2.30 m

• Length 24.89 m
• Beam 5.86 m
• Draft 4.02 m

• 2008 - 2015
• Length 11.99 m
• Beam 3.97 m
• Draft 0.82 m

• Length 7.32 m
• Beam 2.66 m
• Draft 1.40 m

• Length 7.57 m
• Beam 2.40 m
• Draft 1.35 m

• Length 6.85 m
• Beam 2.18 m
• Draft 1.21 m

• Length 20.10 m
• Beam 5.50 m
• Draft 2.95 m

• Length 30.50 m
• Beam 7.10 m
• Draft 4.50 m

• Length 28.87 m
• Beam 6.92 m
• Draft 4.40 m

• Length 35.20 m
• Beam 8.12 m
• Draft 5.75 m

• Length 6.34 m
• Beam 2.20 m
• Draft 1.38 m

• 2013 - 2014
• Length 20.45 m
• Beam 5.65 m
• Draft 1.47 m

• 2012 - 2014
• Length 16.63 m
• Beam 4.80 m
• Draft 0.95 m

• Length 14.60 m
• Draft 1.30 m

• Length 15.80 m

• 2009 - 2015
• Length 9.97 m
• Beam 3.60 m
• Draft 0.83 m

• 1998 - 2011
• Length 8.54 m
• Beam 2.64 m

• 2014 - 2016
• Length 11.23 m
• Beam 3.90 m

• Length 35.05 m
• Beam 8.16 m
• Draft 4.00 m

• Length 8.64 m
• Beam 2.54 m
• Draft 1.58 m

• Length 11.00 m
• Beam 4.00 m
• Draft 1.10 m

• Length 8.88 m
• Beam 3.45 m

• Draft 3.50 m

• 2006 - 2016
• Length 20.12 m
• Beam 5.39 m
• Draft 3.20 m

• Length 27.71 m
• Beam 6.46 m

• Length 23.30 m
• Beam 5.79 m
• Draft 2.90 m

• 2012 - 2015
• Length 25.08 m
• Beam 6.08 m
• Advertising

Customer reviews

• Netherlands
• United States
• United Arab Emirates
• United Kingdom

What Is a Swing Keel?

Last Updated by

Daniel Wade

August 30, 2022

Swing keels are a robust and useful alternative to centerboards, and they’re common on variable draft sailboats.

Swing keels are retractable keels that are hinged in the front and swing into a slot called a trunk. Sailors lift and lower the keel with a crank, pulley, or hydraulic system. Sailboats with swing keels can reduce their draft for shallow water sailing or to make them fit on a trailer.

In this article, we’ll show you everything you need to know about swing keels and the sailboats that use them. We’ll go over the benefits and drawbacks of swing keel designs, compare them to centerboards, and cover the different variations you’re likely to find on common sailboats.

We sourced the information used in this article from sailboat design guides, sailboat plans, and from the sailing community.

Table of contents

‍ What are Swing Keels For?

Swing keels are commonly outfitted on trailerable sailboats that need low clearance. These vessels are usually longer than 20 feet and would normally have a fixed keel if they weren’t designed to be towed.

Swing keels are used in applications where centerboards are cumbersome or have insufficient ballast. Also, a swing keel allows additional ballast to be placed underneath the hull and around the keel trunk.

What is a Keel Trunk?

A keel trunk is a simple rectangular box located on the bottom of the hull. The box, which is open on the bottom and closed on the top, houses the swing keel and its hinge mechanism. The keel retracts into and out from the keel trunk.

The keel trunk can be located inside or outside of the hull. Some vessels have an external keel trunk that protrudes a few inches from the bottom of the hull and usually contains ballast for stability. Most swing keel sailboats have a recessed keel trunk, which is flush with the bottom of the hull.

How a Swing Keel Works

Swing keels, also known as lifting keels, are simple. They act a lot like a lever. The keel is contained in a trunk-mounted to the hull with a pin, which serves as a hinge. The keel is raised and lowered by a system of ropes and pulleys or by a hydraulic system.

Some swing keels are retracted into the trunk using a crank. This system is common on some Catalina sailboats and has proven to be very reliable. These systems usually use a ratcheting pulley which can be locked in one direction for lifting and lowering.

The weight of the keel keeps it in the lowered position, but some vessels have a simple locking device to keep the keel in the down position. When raised, the keel or the raising mechanism is locked securely into place.

Swing Keel vs. Centerboard

Swing keels and centerboards are not the same, but they share some characteristics.

 Centerboards are distinguishable from fin keels because, unlike fixed fin keels, centerboards can be retracted into the hull. Swing keels may appear like fin keels from the bottom, but they also retract into the hull.

So then, how are they different from centerboards? Unlike centerboards, which must be lifted vertically out of the centerboard trunk, swing keels hang on a hinge and fold into the hull. Hence, they ‘swing’ instead of raise.

Benefits of Swing Keels

Swing keels have several distinct advantages over centerboards. Chiefly, swing keels don’t require a massive trunk in the center of the cabin or cockpit.

Most swing keels retract into a trunk located below the hull. Others retract into a trunk under the deck, and some require a small amount of cabin space.

Swing keels never need to be removed or lifted into the boat. Additionally, it’s physically easier to raise a swing keel. This is because the keel distributes some of its weight to the hinge, and lifting it is easier thanks to the physics of levers.

Additionally, swing keel trunks are usually sealed. This is good for a number of reasons—especially in rough weather. Water rarely floods a boat through the centerboard trunk.

But lifting out a centerboard can make a mess, and a pitching and rolling boat could allow water in through an open centerboard trunk. Swing keels don’t suffer from this issue, as the only hole they have is for the rope and block system used to lift and lower the keel.

Drawbacks of Swing Keels

Swing keels have a few notable drawbacks. For one, they’re not as strong or robust as fixed keels. They don’t provide the stability of a full or semi-displacement keel, and they don’t have the windward performance of bilge or fin keels.

Additionally, these keels still require a trunk, which can still take up cabin space on some models. The systems used to raise and lower a swing keel are prone to failure and add complexity where it otherwise wouldn’t exist.

Are Swing Keels Strong?

Swing keels are not as strong as fixed keels. This is because they’re usually smaller and lose rigidity at the hinge. Usually, the addition of mechanical complexity reduces the strength of a system, and that rule applies to swing keels.

A fixed keel can be mounted to a boat with numerous rigid bolts, whereas a swing keel is mounted to a pin and adds a level of complexity. That said, swing keels have an advantage in one respect, which we’ll cover next.

Advantages of Swing Keels in Shallow Water

Most swing keels swing down to the front, meaning their hinge is mounted forward. This is advantageous in shallow water, as it allows the keel to swing up into the boat instead of snapping off should the boat run aground. It’s like an automatic failsafe.

However, some swing keels lock into place in the lowered position. Sailboat owners should always proceed with caution in shallow water and lift the keel if the water isn’t deep enough.

Can You Beach a Sailboat with a Swing Keel?

One of the advantages of having a swing keel is that you can easily beach the boat. All you have to do is build up a bit of momentum, retract the keel, and head for the beach.

Sailboats with swing keels are particularly popular for island hopping due to their transformable flat bottoms. They can also utilize more seaworthy hull shapes than other shallow-draft vessels, thanks to their long retractable keels.

However, some sailboats with swing keels cannot be beached. If the keel retracts fully into the hull, and your rudder does too, you’re in luck. But if you have a fixed rudder, a prop, or any protrusion of the keel under the hull, you have to proceed with caution.

What Sailboats Have Swing Keels?

Dozens of different sailboat brands and models have utilized swing keel systems at some point. One notable and extremely popular example is the famous Catalina 22. The Catalina 22 is a trailerable coastal cruiser with a masthead sloop rig and a typical swing keel.

This small cruiser has a spacious cabin thanks to its keel, which retracts into a hidden trunk. The raising and lowering of the keel is performed by a pulley system and hides out of the way when not in use. The Catalina 22 keel is made of heavy metal.

The Catalina 22 is an example of a sailboat with a semi-hidden swing keel. The trunk only partially covers the keel, as the boat is designed for trailering—beaching abilities were not considered key in its development.

As a result, the keel swings up and still protrudes out from the bottom of the hull. But the swinging design gives the vessel a variable draft and a much deeper keel for stability. The boat otherwise wouldn’t have good handling characteristics if it weren’t for the swing keel.

Not all Catalina 22 sailboats came with a swing keel, but many of them did. It’s the most common boat of its type and a great example of the benefits of swing keels on smaller cruising sailboats.

Do Large Sailboats Have Swing Keels?

Large sailboats aren’t known for having any sort of retractable keel system. However, many ultra-modern big cruising vessels utilize some version of a retractable keel for performance and shallow water operations.

New sailboats that utilize swing keels usually do so for increasing hydrodynamic performance at high speeds and for reducing the draft of an otherwise deep keel.

For example, a vessel with a long 8-foot keel can reduce its draft to 4 feet or so when navigating a harbor and then extend the keel to increase performance offshore.

However, most large sailboats use fixed keels for strength, simplicity, and cost-effectiveness. This is also because most designers simply don’t bother with complex keel systems on larger cruising boats.

What are Swing Keels Made Of?

Swing keels are usually made of strong materials like steel. They’re extremely heavy, as they function as part of the sailboat’s ballast. Swing keels are typically made of a solid steel plate between one and one and one-half inches thick.

Some swing keels on high-performance yachts are made of composite materials like carbon fiber and filled with ballast, but this is exceedingly rare. Much of the sailboat’s ballast is usually internal on swing keel vessels.

Related Articles

I've personally had thousands of questions about sailing and sailboats over the years. As I learn and experience sailing, and the community, I share the answers that work and make sense to me, here on Life of Sailing.

by this author

Learn About Sailboats

Most Recent

What Does "Sailing By The Lee" Mean?

October 3, 2023

The Best Sailing Schools And Programs: Reviews & Ratings

September 26, 2023

Important Legal Info

Lifeofsailing.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon. This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies.

Similar Posts

Affordable Sailboats You Can Build at Home

September 13, 2023

Best Small Sailboat Ornaments

September 12, 2023

Discover the Magic of Hydrofoil Sailboats

December 11, 2023

Popular Posts

Best Liveaboard Catamaran Sailboats

December 28, 2023

Can a Novice Sail Around the World?

Elizabeth O'Malley

June 15, 2022

4 Best Electric Outboard Motors

How Long Did It Take The Vikings To Sail To England?

10 Best Sailboat Brands (And Why)

December 20, 2023

7 Best Places To Liveaboard A Sailboat

Get the best sailing content.

Top Rated Posts

Lifeofsailing.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon. This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies. (866) 342-SAIL

© 2024 Life of Sailing Email: [email protected] Address: 11816 Inwood Rd #3024 Dallas, TX 75244 Disclaimer Privacy Policy

Sailboat Keel Types: Illustrated Guide (Bilge, Fin, Full)

The keel type is one of the most important features of your boat. But the different designs can be confusing, so I've set out to create a very clear guide that will help you understand sailboat keels once and for all.

What are the most common sailboat keel types? The most common sailboat keel types are full-length keels, fin keels, bulb keels, wing keels, bilge keels, and lifting keels. Full keels are popular among cruisers, while fin keels are generally used for racing. Bilge keels and lifting keels are typically used in tidal waters, on small fishing boats for example.

In this article, we'll explore the most common keel types together. I'll use diagrams to really hit home the differences of all these keel types, and we'll discuss what keel types are best for liveaboard, ocean cruising, and lake weekend trips. After reading this article, you'll know what to choose - and why.

Sailboat Keels Explained

On this page:, overview of sailboat keel types, keel types: fundamentals, modified full keel, centerboard.

If you just want a quick overview, here's a list with the most common keel types and a short description. More detail will follow below.

The most common keel types

• Full keels run from front to aft and are the most stable keel type, making them the most popular cruising keel.
• Fin keels offer the best performance but are less comfortable. This makes them popular for racing. Fin keels are bolted on to the hull and generally run deep and thin.
• Bulb and wing keels are both variants on the fin keel.
• Bulb keels carry additional ballast in the tip, making them more stable.
• Wing keels have two tips at the end of the keel, which reduces crossflow, improving directional stability.
• Bilge keels are double fin or double full kees, which allows the boat to be beached, making them the most popular keel for tidal waters.
• Lifting keels are moveable keels that can be lowered and raised, allowing the boat to enter shallow waters as well.
• Centerboard keels are a pivoting lifting keel, allowing to sail both coastal and inland waters.
• Leeboards are fins on the sides of flat-bottomed hulls boats, making a keel unnecessary.

Properties of each keel type

What does a keel do?

What does the keel do? A keel is a vertical blade running down from the hull. It is weighted and acts as a ballast, countering the boat's tendency to heel and preventing it from tipping over. The wetted surface under the waterline reduces slippage to leeward by creating a track, which counters the sideway force of the wind on the sails.

The reason sailboats don't tip over is that the weight of the keel counters the buoyancy of the hull, which means it will pull the boat downward. This downward force reduces heel and prevents the boat from rolling.

A canoe doesn't have a keel. Try stepping into that: it will want to roll.

It counters the horizontal force the wind puts on the sails. Whenever the force on the sails increases, the resistance of the water on the keel increases proportionally.

The heavier the keel, the less heel you'll get.

A keel reduces slippage to leeward. Slippage is simply the amount you fall off course because of the direction of the wind and current. Leeward is the side of the boat behind the wind.

So if you don't have a keel, you will fall off course quite a lot because the wind will push you over the water surface.

You will also heel quite a lot since there is nothing beneath the water surface to counter the force of the wind high up in your sails.

A keel fixes both of these issues and makes sailboats one of the most reliable boats in heavy winds and storms.

You can read on about how keels work here.

Keels can be classified by multiple dimensions. You can look at them from the side or the front. You can also classify them based on properties.

Before I dive into each keel type in-depth and show examples, let's make sure we have the same starting point.

There are essentially two sorts of keels:

Fixed keels

Movable keels.

Fixed keels are keels that are integrated into the hull or bolted on. They can't be moved or lifted.

When looking at fixed keels, you can divide them up further based on the side view. There are three main categories:

Bilge keels

Full keels are more comfortable, provide better stability and protection, but are also slower than fin keels.

Fin keels are less comfortable, provide less stability, are more vulnerable, but they're also a lot faster than full keels.

Bilge keels are double keels: one on each side of the hull. This allows them to be beached, which comes in handy in tidal waters. They are generally a lot slower and less maneuverable compared to fin keels.

Movable keels can be lifted from the water, creating a shoal (shallow) draft, allowing the boat to enter both shallow waters and coastal waters. This makes it a very versatile keel type. There are two main designs:

Lifting keels

Lifting keels can be lowered and raised through a slit in the hull. Examples of lifting keels are the daggerboard and centerboard.

Leeboards are wooden swords attached to the side of the hull and prevent slippage to leeward, but they don't stabilize the boat, nor counter heel by adding ballast.

With fin keels, there are different tip designs available. The most common two tip designs are:

These are both variants of the fin keel. Generally, these keel designs are mentioned in one breath with full keels and fin keels, creating confusion on what kind of keel they are. But it's important to understand that they are a sub-category of fin keels.

Rudder design

As with the tip of the fin, there are different rudder designs that may apply to both fin and full keels. The two most common rudder designs are:

Skeg rudder

Spade rudder.

A skeg is a structural part of the keel in front of the rudder that protects the rudder. The keel encompasses the rudder, preventing any rogue ropes, weeds, or rocks from damaging the rudder.

A spade rudder is an unprotected rudder: it doesn't have any structural protection from the keel design. It is simply attached to the hull. This design is very common.

Alright, we understand the big picture. Let's dive into more detail for each keel type and discuss the pros and cons.

Fixed keel Good for cruising and liveaboards Comfortable

What is a full keel? A full keel runs from front to aft for at least 50% of the hull and is fully integrated into the hull. It has the largest wetted surface of any keel type, and it is also the heaviest. This results in directional stability and reduced heeling, providing the most comfortable ride, but also the slowest.

The wetted surface simply means the amount of water contact area. With such a large wetted surface, it decreases slippage to leeward the most of all keel types, while it counters heeling the most as well.

The full keel is the most comfortable and stable keel type available. However, comfort comes at a price. It delivers the worst performance due to this large wetted area. It is the slowest of the keel types, and it has the worst windward performance.

This makes full keels particularly great for longtime cruisers or liveaboards who prefer comfort over speed, but less ideal for daysailers who need to navigate in and out of slips regularly.

Since it runs for at least 50% of the hull, it doesn't need to run as deep as a fin keel, resulting in a more shoal draft.

Heavier keels result in increased displacement, so a full keel boat will need a larger sail area to compensate for its weight.

For a more detailed discussion on full keel advantages, I recommend reading William's excellent article 5 Surprising Advantages of a Full Keel Sailboat here.

Example sailboats with a full keel:

• Nicholson 22
• Island Packet 380
• Beneteau Oceanis 411 Clipper
• Beneteau First 50
• Jeanneau Sun Shine 38
• Dufour 455 Grand Large

There are a lot of great cruising boats with full keel designs , some of them considered classics.

Full Keel with skeg rudder

Full keels with a skeg rudder design have a protected rudder, thanks to putting a structural part of the keel directly in front of the rudder. This helps with fending off any hazards to the rudder, like floating pieces of rope, rocks, or garbage, and protects it in case of running aground. The skeg design ensures the rudder is nearly impossible to break off.

Fixed keel Good for cruising and liveaboards Faster than a regular full keel

What is a modified full keel? A modified full keel is a full keel with a cutout at the front, reducing the wetted surface slightly, which increases performance without sacrificing too much comfort and stability. After the full keel, it has the best directional stability and the least amount of heel.

The modified full keel is popular among (bluewater) cruisers, thanks to its increased handling and performance. Most modified full keels have a skeg rudder, ensuring it is well-protected.

The slightly reduced weight and wetted surface improve windward performance quite a lot, but it is still one of the most stable keel designs out there.

Example sailboats with a modified full keel:

• Hallberg-Rassy HR 40
• Dufour Arpege 30
• Beneteau Oceanis Clipper 281
• Jeanneau Sun Odyssey 37.2

Fixed keel Good for racing Fast

What is a fin keel? A fin keel is a long, weighted blade attached to the bottom of the hull. It is lighter, faster, and more maneuverable than a full keel, but also more vulnerable. The increased distance between ballast and sails provides a lever, reducing the need for a large wetted surface or additional ballast.

Fin keels are generally bolted onto the hull and run deeper and thinner than a full keel. They are also lighter. This helps increasing performance (a lot), making fin keels a lot faster in all situations.

There are some major disadvantages to fin keels, however. Fin keels are a lot less comfortable than full keels and allow for more heel and a less solid track, so less directional stability. Fin keels are also a lot more vulnerable than full keels. They can break off when running aground, or get damaged.

They are very popular among racers and perform better when maneuvering in tight spots, like getting in and out of slips.

Example sailboats with a fin keel:

• Catalina 30
• Jeanneau Sun Odyssey 36.2

Fin keel with skeg rudder

Fin keels with a skeg rudder use a small structural part in front of the rudder to protect it. This design is mostly integrated into the hull, making it less vulnerable, and a great compromise between speed and safety.

Fin keel with spade rudder

Fin keels with a spade rudder have a completely exposed rudder, and typically a fin that is simply bolted on. The keel isn't integrated into the hull, making it more vulnerable and less comfortable.

Fin keel variant Good for cruising Less crossflow

What is a wing keel? A wing keel is a fin keel with a horizontal foil at the tip, which is wing-shaped and generally weighted. Its shape reduces crossflow, improving directional stability, and its ballast decreases heel, resulting in a more comfortable ride. The addition of a wingtip allows for a shorter fin, reducing draft.

Wing keels are good for cruising since this design improves directional stability compared to a regular fin keel or a bulb keel.

We'll discuss the wing keel's advantages and disadvantages in more detail in this article.

Fin keel variant Good for cruising Stability

What is a bulb keel? A bulb keel is a high-aspect-ratio fin keel with additional ballast at the end, which generally has a bulb or teardrop shape. This ballast improves stability and utilizes the distance between force and counterforce as a lever. This design reduces the need for a deep fin, resulting in a shoal draft.

By placing the weight at the largest possible distance from the force on the sails, you need relatively little extra weight for the same reduction in heel, making bulb keels very effective for cruising.

This design reduces the wetted area while increasing the weight of the keel just slightly, which increases sailing comfort big time.

Example sailboats with a bulb keel:

• Bavaria B/One
• Beneteau First 24

Fixed keel Good for racing Can be beached

What is a bilge keel? A bilge keel is a twin keel which uses double fins, allowing the boat to be beached and rest on its keel upright. Bilge keels have double the wetted surface, which increases comfort and directional stability while decreasing heel. Modern bilge keels often provide decent windward performance, thanks to better design.

The bilge keel does sacrifice speed compared to the fin keel but doesn't necessarily offer worse performance overall. Older designs performed considerably worse than other keels and were especially slow.

Bilge keels have some major advantages over full keels and fin keels. The most important is that the boat can be beached, making it a popular design in tidal waters. Bilge keels are especially common along the British coastline, where fishermen keep their boats in tidal harbors.

Another major advantage is that the boat can be stored resting on its keels, making dry storage and maintenance a lot easier.

Of course, there are many more pros and cons to the bilge keel , which we go into here.

Example sailboats with a bilge keel:

• Dufour Dynamique 62
• Hunter Duette
• Patagonia Patago 39
• Macwester 27

Lifting keel Good for daysailers Versatile

What is a centerboard? A centerboard is a type of retractable keel that rests on a hinge and can be lowered through a slot in the hull. It folds out like a pocket knife and allows you to increase or reduce the draft of the boat. Centerboards are mostly used on small fishing boats.

The centerboard is a very versatile keel type, allowing you to have both a very shoal draft for inland waters, as well as steadying the boat and reducing heel for larger bodies of water, or even oceans.

I've sailed a Cornish Crabber with a centerboard for a week, and while we stayed inland, having the option to increase the keel depth really came in handy when crossing the IJsselmeer (a former sea in The Netherlands).

There's more to the center

Olaf Roethele

https://www.theyachtmarket.com/en/new-boats/cornish-crabbers/adventure-17/218/

My name is Olaf and I am the owner of a Cornish Crabber 17 Adventure boat.

I would like to ask you if you can imagine to install on this boat a Torqeedo 2.0 Pod motor? Therefore i guess a modification of the keel/skeg is necessary ?!

Best regards from Uruguay,

You completely missed the hybrid planing/water-ballast keel of the Macgregor range

Thanks a lot for this explanation

Roger Bannon

Very well written article which provides an excellent guide for us small wooden boat builders. Thanks.

Leave a comment

Own your first boat within a year on any budget.

A sailboat doesn't have to be expensive if you know what you're doing. If you want to learn how to make your sailing dream reality within a year, leave your email and I'll send you free updates . I don't like spam - I will only send helpful content.

Ready to Own Your First Boat?

Just tell us the best email address to send your tips to:

• Telescopic Lifting Keels
• Lifting Keels
• Fixed Keels
• CNC machined bulbs
• Pivoting, Canting and Daggerboard Keels
• Crash safe bulbs

LIFTING KEELS

The “classic” apm product, 30 years and hundreds of lifting keels of all size and characteristics sailing around the world..

Engineered and designed to suit the required naval architect specifications, adapted to the vessels specific requirements, from racing to cruising yachts.

Modern sailing yachts can not perform without a lifting keel, and APM’s keels proved to be the best solution of all the designs.

Suitable in size for sailing yachts from 50’ up to 300’ and more, designed to details, to perform and be reliable, allowing the modern yachts to sail but enter the harbours or bays.

Made in high resistance metals, chosen for characteristics to suit the particular design, fully CNC machined and detailed in all the components, making the keels lasting the yacht’s life. Easy to be installed and to be maintened, proven safe and fully performing in all possible situation, from hard racing to cruising in the remote seas.