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The Lightning offers a combination of performance and stability that eludes most one-designs. The Lightning’s hard chine and 130 lb centerboard give her the stability and power of a small keel boat going to weather in strong winds and allow her to carry a very large spinnaker for breathtaking off wind rides. The Lightning’s rig is simple, but offers sophisticated sail shape controls. 

Our 19-foot trailerable centerboard sloop has evolved into one of the most popular and competitive one-design racing classes in the world. Awarded ISAF International Class status, the Lightning is sailed in more than 13 countries and in the Pan American Games, and the class provides a professionally-managed association that is among the largest in all of one-design sailing. 

If you’re looking for a boat you can be proud to sail, one that offers dinghy handling with the performance of a sportboat, a refined design that’s free of fads, complete with the technology of today for both racing and daysailing – Get The Best Of Both Worlds. Get into a Lightning.

Class Information:

Class Contact:  Laura Jeffers, Executive Secretary

Class Contact Email:   [email protected]

Class Contact Phone:   727-942-7969

Class Website:   lightningclass.org

Social Media:   Facebook  |  Twitter  |  Instagram  |  Youtube  

Class Specs

LOA:  19 ft. 

Beam:  6 ft. 6 in. 

Draft:  4 ft. 11 in. 

Weight:  700 lbs. 

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At the Helly Hansen NOOD Regatta St. Petersburg, the mover and shaker of the A Class catamaran fleet builds his world championship field of dreams.

Snowbirds Descend Upon the Helly Hansen NOOD Regatta St. Petersburg

Tampa Bay locals have it good year-round, but it’s more fun when winter’s escapees come to play.

The Lightning Rod

The boat builder goes beyond family legacy in the Lightning Class, he’s bringing fresh energy to this vintage fleet.

Inside the Class: Lightning

On the morning of the final race, we sat down with a Lightning class legend and the fleet’s next generation to see what they could learn from each other.

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Lightning Parts

West Coast Sailing is your source for Lightning sailboat parts and accessories. The Lightning has 60 years of tradition behind it. This competitive 19-foot trailerable centerboarder is one of the most competitive one-design classes today. But whether you're interested in serious racing or just want to go for a ride, the Lightning gives you what you're looking for. Some great sailors have been 'struck by Lightning': Ted Turner, Dennis Conner, Ken Read, Bill Shore, and Greg Fisher to name a few.

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Lightning Jib Sheet 2:1 Continuous

Lightning Jib Sheet 2:1

Lightning Jib Sheet 1:1

Lightning Mainsheet (Fusion)

Lightning Mainsheet (SSR)

Lightning Spin Halyard

Lightning Spinsheet (SSR)

Lightning Spinsheet Tapered

Lightning Spinsheet (Ultra-Lite)

Harken 13 mm Traveler Car w/ Shackle

Harken Cam Cleat Swivel Base w/ 150 Aluminum Cam

Harken 22 mm Double Upright Bullet Block

Harken 40 mm Carbo Block Traveler w/ 29 mm Block

Harken 29 mm Carbo Clew Blocks w/ Ring

Harken Thru-Deck 44 mm Dinghy Block

Ronstan Cam Cleat Fairlead Medium Grey

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Rigging - halyards, sheets, and wires.

West Coast Sailing has a full range of designs for all Lightning running and standing rigging which can be built to order in our rig shop. Email our team at [email protected] to learn more . Products coming to our online store Spring 2022.

Rigging Diagram

Use the diagram below to reference Harken part numbers to appropriate application on your Lightning sailboat. Parts recommendations are offered as a guide for common applications.

Adjustable Ball bearing Lead Car

Upgrading to an adjustable lead car system allows you to change your lead under sail without having to tack to unload the car. The Micro CB traveler cars are very small and lightweight, but strong—perfect for the Lightning.

Belowdeck Vang System

This split boom vang lets you easily adjust the vang from both sides while hiking. The 24:1 purchase uses lightweight Carbo blocks for the power needed to control sail shape without adding weight to the boat. The cascading system uses small high-tech line to help keep everything clean above deck.

Diagram provided by Harken. West Coast Sailing is an approved seller of Harken sailboat hardware.

Looking for other sailboat parts? We can help!

General Parts & Hardware - We offer a huge selection of  General Parts  including hardware, blocks, cleats, shackles, accessories and more here .

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Sail1Design

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November 30, 1999 by Sail1Design Editor Leave a Comment

Without Compromising Either One The Lightning, a 19 foot trailerable centerboard sloop, was originally designed by Sparkman & Stephens as an affordable family day-sailor and racing boat. She has evolved into one of the most popular and competitive one-design racing classes in the world. Awarded ISAF International Class status, the Lightning is sailed in more than 13 countries and in the Pan American Games, and the class provides a professionally-managed association that is among the largest in all of one-design sailing. The Lightning’s rig is simple, but offers sophisticated sail shape controls. The hull features a unique hard chine design that combines the stability that provides sail-carrying power, with flat bottom sections that promote planing. The International Lightning Class Association protects the boat’s design and licenses custom and private builders to build boats under its administration. A list of Lightning builders is available from the ILCA upon request.

Dinghy Responsiveness, Sportboat Performance

The Best Of Both Worlds Whether racing or daysailing, the Lightning offers a combination of performance and stability that eludes most one-designs. The Lightning’s hard chine and 130 lb centerboard give her the stability and power of a small keel boat going to weather in strong winds and allow her to carry a very large spinnaker for breathtaking offwind rides. There’s room in the cockpit for two couples or a family to daysail, but the Lightning is easy to ramp launch and light enough to trailer with ease. In the event of a capsize, she can be righted and sailed dry by her crew.

Refined Design, Toda

The Best Of Both Worlds Whether you’re more interested in how a boat looks or how it behaves, it’s hard to beat the Lightning. The Class maintains an attitude that promotes conservative innovation, making the boat faster, safer and more maintenance free, while keeping prices affordable. Most Lightnings built in the last 25 years can be made competitive and it’s not uncommon to see them winning races right along with new ones. In fact the 1995 World Champion sailed a boat built in 1969! Modern Lightnings are built in foam-cored fiberglass with stainless steel centerboards and black anodized aluminum spars. The world’s top sailmakers give the class their best efforts. In short, there are enough controls to keep the most technically inclined happy, but it’s good tactics, boat-handling and hiking that win races.

The Best Competition In The World Or A Way To Get Away From It

The Best Of Both Worlds

Ted Turner, Dennis Conner, Ken Read, Dave Dellenbaugh, Dave Curtis, Bruce Goldsmith, Tom Allen, Neal Fowler, Steve Benjamin, Ched Proctor, Bill Shore, Greg Fisher, Andy Horton are just a few of the rock stars who have competed in the Lightning. After more than 60 years and more than 15,000 boats it’s easy to find a regatta when you want to. But whether you’re interested in serious racing or you just want to go for a joyride with the family, you’ll find what you’re looking for in the Lightning. Club Racer Or International Icon

The Lightning truly excels as a racing boat. It requires a wide range of different skills, both tactical and technical. At 700 pounds all up, the boat is tough enough to avoid frequent breakdowns, but light enough to plane wildly on the reaches. A World Championship is held every two years. North American, South American and European Championships are held each year as are innumerable regional and District championships. Major regattas attract some of the finest sailors in the world, but you find class members friendly and the sailmakers’ complete tuning guides helpful at getting you up to speed in a hurry.

The International Lightning Class Association

Welcome To Our World

The ILCA is one of the oldest and best organized class associations in sailboat racing. Its primary purpose is to serve its membership, preserve the integrity of the Lightning and provide high-quality competitive events. In addition, the ILCA publishes a monthly newsletter Lightning Flashes with up-to-date regatta news, boat brokerage and ideas on how to get the most out of your Lightning. An annual Yearbook, containing many illustrated articles, reports on major championships, fleet reports and a complete association mailing list, is also published. The professional ILCA staff is always on hand to assist both current and potential members. If you’re looking for a boat you can be proud to sail, one that offers dinghy handling with the performance of a sportboat, a refined design that’s free of fads, complete with the technology of today for both racing and daysailing

Get The Best Of Both Worlds. Get into a Lightning. See you on the water. David Dellenbaugh, former Lightning World Champion and starting helmsman for 1992

America’s Cup defender America3

The Top 10 Things I Like About The Lightning: 1. There’s Lightning racing almost everywhere. 2. Some of the best sailors in the world sail the Lightning. 3. Lightnings are available from more than one high-quality builder. 4. Lightnings even 20 years old are still competitive. 5. The boat is one of the best crew trainers on the water today. 6. The class is not so strict as to discourage experimentation which makes the boat faster and easier to sail. 7. The Lightning has interested the finest sailmakers in the world so the sails and the tuning guides look great and are easy to use. 8. The Lightning is a very roomy boat for daysailing. 9. Lightning sailors sail hard, but they’re not too cutthroat – someone’s always ready to answer questions. 10. The class management is as good as you’ll find in one-design sailing. For more information about the International Lightning or to arrange a test sail in your area, call or write to the address listed below.

Design: Sparkman & Stephens, 1938 Over 15000 built More than 500 fleets worldwide Length: 19’0″ (5.8m) Beam: 6’6″ (2m) Displacement: 700 lb (318 kg) Draft (board down): 4’11” (151.3cm) (board up): 5″ (12.8cm) Mast height: 26’2″ (7.9m) Sail area (main & jib): 177 sq.ft. (spinnaker): 300 sq.ft. Crew (racing): 3

Class website: http://www.lightningclass.org/index.asp

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Lightning Details

The International Lightning Class is a 1938 Sparkman and Stephens design. This active racing class has grown to nearly 15,000 boats. The quality, performance and speed of the Nickels Lightnings are proving themselves for hundreds of current owners including North American and World Championship skippers. Why not join them with the confidence that you are buying the best there is?

The Nickels Lighting features a new hull and deck. The hull design maximizes down wind speed while preserving upwind performance, while the new rolled deck affords greater comfort when hiking in addition to our optimization of control line location. The new deck also provides for increased interior room for crew and skipper. We have also included a new location for fine tuning of the backstay. This new deck is stiffer insuring durability and strength.

Fully rigged w/ stainless steel centerboard: $24,995

A new Nickels custom race equipped Lightning includes:

• Lightning Class Number—royalty and measurement certificate (from the class)
• One color hull—one color deck New style rubrail white or black
• Harken Equipment— Carbo blocks now standard
• Mainsheet swivel with hexaratchet Jib sheet—Custom NBW jib car
• Spinnaker guy and sheet Ratchamatic Jib uphaul—6 to 1
• Twing lines with guy hooks Jib cloth—2 to 1
• All block Boomvang 22 to 1 Backstay—8 to 1
• NBW mast all lines internal Cunningham—4 to 1
• Mainsheet bridle—Winward sheeting type, pull down
• Centerboard hoist—10 to 1
• Dual side controls—for backstay, mainsheet bridle, boomvang & cunningham with color coded lines.
• 360 degree swivel cleat—on centerboard hoist 2 Hinged transom bailers
• 3 padded hiking straps (your choice of color)
• Large storage compartments in both cross seats
• Lifting bridle
• Nickels aluminum mast, boom, spinnaker pole and tiller with extension

Color Options: White is standard but for modest charge we customize for your color and striping

Rigging Options: There are numerous options. Give us your specifications and we will customize a price proposal for you.

Sails: Sails by North, Quantum and Vermont Sailing Partners. Current prices less 10% with new boat purchase. Covers are available from all manufacturers on request.

Also Available: Trailer - $1895 Spare Tire - $90.00 Aft Kick Stand - $35.50 (installed) Spare Tire Bracket - $37.50 (installed) 4 Stanchions - $449.00

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International Lightning Class Association

Class contact information.

Click below

Class Email

Class Website

One-Design Class Type: Dinghy

Was this boat built to be sailed by youth or adults? Both

Approximately how many class members do you have? 1600

Photo Credit:Douglas Wake

Photo Credit: Art Petrosemolo

About International Lightning Class Association

The Lightning truly excels as an affordable racing boat. The rig is simple but offers sophisticated sail shape controls. The hull features a unique hard chine design that combines the stability that provides sail-carrying power, with flat bottom sections that promote planing. At 700 pounds all up, the trailerable centerboard sloop is tough enough to avoid frequent breakdowns, but light enough to plane wildly on the reaches. Membership is diverse with sailors aged 8 to 80+. Many families sail together at top events and it is common to see females make up at least 40% of competitors.

The Lightning is sailed in more than thirteen countries and in the Pan American Games. A World, Master World and Youth World Championships are held every two years. North American, South American and European Championships are held each year as are innumerable regional and District championships. Major regattas attract some of the finest sailors in the world, but you find Class members friendly and the sailmakers’ complete tuning guides helpful at getting you up to speed in a hurry.

The International Lightning Class Association is one of the oldest and best organized class associations in sailboat racing. Its primary purpose is to serve its membership, preserve the integrity of the Lightning and provide high-quality competitive events. In addition, the Lightning Class publishes monthly e-blasts and a quarterly newsletter Flashes with up-to-date regatta news, boat brokerage and ideas on how to get the most out of your Lightning. The professionally managed association and dedicated volunteers are always on hand to assist both current and potential members.

If you’re looking for a boat you can be proud to sail, one that offers dinghy handling with the performance of a sport boat, a refined design that’s free of fads, complete with the technology of today for both racing and day sailing – look at the Lightning.

Boats Produced: 15630+

Class boat builder(s):

Allen Boat Company, Buffalo, NY: https://www.allenboatco.com/

WindRider International: https://www.windrider.com/

Approximately how many boats are in the USA/North America? 11,000+

Where is your One-Design class typically sailed in the USA? List regions of the country:

East of the Mississippi, Mid-West, Texas, Denver, San Diego, Pacific Northwest Click Here for Fleet Finder Map: https://www.lightningclass.org/content.aspx?page_id=451&club_id=93488

Does this class have a spinnaker or gennaker? Yes

How many people sail as a crew including the helm?  3

Ideal combined weight of range of crew:  490

Boat Designed in  1938

Length (feet/inches): 19’0″

Beam: 6’6″

Weight of rigged boat without sails: 700 lbs

Draft: (board down): 4’11”, (board up): 5″

Mast Height: 26’2″

Back to One-Design Central

Copyright ©2018-2024 United States Sailing Association. All rights reserved. US Sailing is a 501(c)3 organization. Website designed & developed by Design Principles, Inc. -->

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Lightning centerboard extraction

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Lightning centerboard extraction I have lightning and am wanting to extract the centerboard to remove the paint. Any suggestions on a one man extraction? Is it possible to extract with the boat on the trailer?  

I don't know about trailer extraction but with some inguinuity you can do it. You need some jacks to raise the keel a few inches above the width of the center board. I take mine out periodicaly and alway's tell the yard to leave me sitting high enough to wiggle the CB out. there is nothing one man can't do with come alongs, jacks, patients and fore thought.  

So the CB needs to come out from the bottom correct?  

Ya, there will be a bolt that it pivots on. They were installed with extraction in mind, very simple set up.  

Good deal, thanks!  

Any tips on getting the paint off the stainless steel CB?  

Wire brush on a drill.  

The CB on a Lightning is supposed to weigh <= 130 pounds. ILCA Lightning Plans and Specifications Probably be easier to extract the CB in shallow water on a calm day. You need to find and remove the pivot pin in the CB trunk. I'm not sure if this is feasible or not but you could remove the cap of the CB trunk in the cockpit. You might be able to jigger the CB out through the top. I doubt this would work with the boat lying flat in it's trailer though. You'd likely need some wiggle room. Another thought is to dump the Lightning onto the ground, prop up one side and dig a trench under the CB. Good luck.  

The board comes out of the the top of the trunk somewhat easily. Replace pannant with something easier to hold on to and fasten it somewhere so the top of the board doesn't go below the top of the trunk. Wedge something like a cuchion on the trailer brace to restrict the amount the board can be lowered. Lower board. Remove pivot pin and carefully wiggle it out. The standard steel (or ss steel) board is heavy, but one, reasonably strong person can manage this task. An extra person can make it a little safer.  

I have recently purchased a Lightning (1982 nicholes boatworks variety). I am new to this boat type so I am not quite getting in my mind the picture of the centerboard removal. Terms are important but is there a diagram anywhere or pictures on the internet for me to become enlightened? I have yet to take the boat out until all is clear in my mind. I've even thought about suspending the boat off the trailer to drop the board for examination and removal. I have an extremely sturdy garage frame that I can back the trailer under to do so and a 1 ton chain hoist begging for something to do.  

REad the message I left previously. It WILL work with this particular vintage Lightning. It's DESIGNED to allow the CB to be removed while resting on the trailer. Lifting the boat and trying to remove it through the bottom is much more difficult and potentially dangerous. Just be sure you put something underneath (between trailer and bottom of boat) in order to prevent the board from falling on to the trailer or on to the ground. The pin upon which the board pivots is removable from the inside. The board is heavy, and you want to fasten something easy to hold on to through hole in the top. I have done this at least 20 times by myself, and I'm no athlete. A helper might reduce anxiety  

As Sonosail posted in post #9 of this thread, the top of the centerboard trunk can be removed allowing you to extract the centerboard; all 130#'s of it. I checked with the International Lightnint Class.org website for the One design specs on this boat. On the Lightning I owned I remember a wood cap over the center board trunk probably made from Mahogany wood and bunged in. You would need to find and remove all the bungs, then the screws beneath them and remove the entire board to reveal the center board trunk. Extracting it is then just a matter of lifting. Sounds easy enough. Yeah right.  

I, for one, (and I know, others do too,) appreciate the helpful comments you regularly make on this forum. In this case, you must be thinking of boat other than a Lightning. (or possibly a really old wood one?) I've owned 3 different lightnings and sailed on at least 20 others. I also owned one from this same builder and vintage, and performed this same task at least 20 times. Not necessary to take anything apart. (only the pivot pin when when you ready to lift the board out.) Slot is open at the top. No cap. The board is somewhat heavy. But unlike many other boats, someone actually thought about how a single person would take the centerboard out without too much effort. I haven't owned a Lightning in years, and since I have this sailboatdata.com thing, I never get involved with recommending any kind of boat. I will say, however that the Lightning (designed in the 1930's) is the most well thought out boat I have ever owned. I just remember thinking after launching a Laser for the first time, how much easier everything was on the Lightning. (not a useful comparison for most, ..initial impression only.)  

sonosail said: I, for one, (and I know, others do too,) appreciate the helpful comments you regularly make on this forum. In this case, you must be thinking of boat other than a Lightning. (or possibly a really old wood one?) Click to expand...

The going price for a used, SS Lightning CB is about $1k. If it were mine, I wouldn't touch it with a wire brush. Strip it with methylene chloride paint stripper. maybe use a 3M pad with stripper to get off the last remnants. Not that I'm recommending it, the CB will fall out if you invert the boat; gravity is holding it in. The TCA Class rules require a restrainer to keep them from falling out f the boat turtles.  

I owned a Lightning for years and had the steel cb out a number of times. It is not at all difficult and can be lifted out by one person although two would be better. I would just scrape what I could with a regular sharp hand scraper and then get a belt sander on it with some 120 paper. It's not a polished surface and needs some grip surface anyway if you're painting it again. I've seen the cbs in steel and bronze. Never saw one made from stainless...nice. Why paint it at all if trailering? I painted my cb because she was moored and, being steel, was prone to rust. Forgot to say that I removed mine when the boat was upside down. This makes for fewer potential problems and less chance of messing up the trunk and brightwork. Remove the top stop and it will slide right out once the pivot bolt is taken out. They are fairly easy to flip over and block up inverted.  

The minimum weight of a lightning is 700lbs, and the centerboard accounts for a small but good percentage of that weight, so unless you need to remove the centerboard I would first launch the boat and see how it operates. If it drops down then you are all set and go sailing! At the forward end of the centerboard trunk you will see a pin which the centerboard pivots on. The distance from the pin to the aft end of the trunk is about how much the centerboard will stick down underwater. Our club used to race those boats and I don't recall a centerboard ever having a problem. What I would suggest checking is the state of the lifting cable, especially where it attaches to the centerboard. -jonathan  

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Lightning Sailboat Parts & Equipment

Lightning Travel / Deck Cover

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Lightning training jib (cross cut), mps-1260-ods-jt1.

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Offshore Spars

Lightning spinnaker pole - carbon (uni-directional heavy duty), ofs-cpole-lightning-s-n-d.

Lightning Spinnaker Pole - Carbon (Woven Twill Light Weight)

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Block - Carbo 29mm Single - Fixed Head

Block - Carbo 29mm Single - Cheek

Block - Carbo 40mm Single - Fixed Head

Cam Cleat Standard - X-Treme Angle Fairlead

Block - Carbo 29mm Single - Swivel / Becket

Block - Carbo 29mm Double - Linked by Clew

13 mm Low-Beam Micro Track - 0.6 m

Har2707600mm.

Cam Cleat 150 - Cam-Matic

Block - Wire High Strength 25mm - Wire

Block - Carbo 40mm Double - Traveler

Block - Classic Bullet 29mm Double - Upright

Block - Carbo 29mm Double - Swivel

Block - Classic Bullet Dinghy 44mm Single - Through-Deck

13mm Micro CB Tracks - Low Beam - 1.0 m

Block - Carbo 29mm Triple - Swivel

Class description.

The Lightning, a 19-foot trailerable centerboard sloop, designed by Sparkman & Stephens as an affordable family day sailor and racing boat. She has evolved into one of the most popular and competitive one-design racing classes in the world. The Lightning's rig is simple, but offers sophisticated sail shape controls. The hull features a unique hard chine design that combines the stability that provides sail-carrying power, with flat bottom sections that promote planing. There's room in the cockpit for two couples or a family to daysail. The Lightning is easy to launch and light enough to trailer with ease. In the event of a capsize, she can be righted and sailed dry by her crew. Get "The Best of Both Worlds.

Class Specs

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Lightning Class Supporters

The Lightning is a 19.0ft fractional sloop designed by Sparkman & Stephens and built in wood or fiberglass by Clark Boat Company since 1938.

15550 units have been built..

The Lightning is an ultralight sailboat which is a very high performer. It is reasonably stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.

Lightning for sale elsewhere on the web:

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• Sailboat Guide

Lightning is a 18 ′ 11 ″ / 5.8 m monohull sailboat designed by Sparkman & Stephens and built by Nickels Boat Works, Inc., Skaneateles Boat & Canoe Co., Helms - Jack A. Helms Co., Siddons & Sindle, Lippincott Boat Works, J.J. Taylor and Sons Ltd., Lockley Newport Boats, Eichenlaub Boat Co., Mobjack Manufacturing Corp., Clark Boat Company, Allen Boat Co., and Loftland Sail-craft Inc. starting in 1938.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

One of the most popular one-design classes in the US since the 1940’s. But fleets also exist in other parts of the world. Although originally designed for wood planked construction, nearly all boats since the early 1960’s have been built of fiberglass. Ballast above is max weight of centerboard.

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What is a Sailboat Centerboard?

Last Updated by

Daniel Wade

June 15, 2022

A sailboat centerboard is a retractable fin that protrudes from the bottom of the hull. The centerboard keeps the boat stable and on course.

Centerboards are an important and often overlooked part of a sailboat, but they're essential to stability and effective navigation. Centerboards perform the function of a keel and keep the boat on course regardless of wind direction. Centerboards are primarily found on small trailerable vessels, which vary in length from 12 to 25 feet.

Table of contents

How a Centerboard Works

Centerboards look similar to fin keels, but they have one notable difference: they're retractable. Small sailboats use centerboards for stability and to keep a straight course, especially when sailing windward .

Technically speaking, a centerboard is a rudimentary form of a hydrofoil. In practicality, it's like a rudder that always stays amidships. This is beneficial, as it forces the boat to track a straight course regardless of what direction the wind is blowing.

Without the centerboard, the wind would push the sailboat in whatever direction it was blowing. Tacking would be nearly impossible, and attempting to sail windward could simply knock down the boat. In this sense, the centerboard performs the same function as a fixed-keel.

Centerboard Sailboat Characteristics

Centerboard sailboats are typically less than 25 feet in length and designed for shallow water. In fact, centerboard boats are perfect for shallow water. Cruising in lakes and rivers is a joy with a centerboard boat, as the board can be retracted for towing, beaching, or skimming over shallow water. Centerboard sailboats are the ultimate shoal-draft vessels.

Centerboards descend from a hollow cavity in the center of the boat. This cavity is called the centerboard trunk. Some centerboards are removable and slide vertically into the centerboard trunk. Others are hinged or enclosed, allowing them to be raised and lowered from inside the cabin without removal.

Removable Centerboards

Removable centerboards are usually found on the smallest sailboats. These blades tend to be roughly twice the length of how they look from under the boat. This is because the centerboard trunk has to be above the waterline. Remember, the centerboard trunk is effectively a hole in the boat, so it can't be the same height as the water.

Enclosed Centerboards

Enclosed centerboards are common on mid-sized and larger 'small' boats. They're especially common on vessels equipped with cabins. The primary benefit of an enclosed centerboard is water tightness, as the board is housed within a sealed centerboard trunk.

Enclosed centerboards can be raised and lowered from inside the cabin and never needs to be removed from the boat. They're also shorter (overall) than removable centerboards, as they don't mount to the very top of the high centerboard trunk.

The primary drawback of enclosed centerboards is increased complexity and access issues. But in most cases, small centerboard craft are not usually in the water long enough for severe growth issues. Additionally, retracting the board can protect it from excessive marine gunk.

Hinged Centerboards

Hinged centerboards (or 'swing keel' centerboards) are the most common enclosed variety. Hinged centerboards pivot on a forward hinge. They're long and thin and sometimes stow in a hidden centerboard trunk that's mounted to the bottom of the hull.

These 'stealth' centerboard trunks free up cabin space at the expense of a few inches of draft. Hinged centerboards offer an increased level of grounding safety, as they retract on their own if they hit the ground (instead of shearing off). It's the collapsing steering column of sailboat keels .

Advantages of Centerboard Sailboats

The primary advantage of a centerboard boat is its inherent shoal-draft capability. That means centerboard boats can go a lot closer to shore than fixed-keel vessels. They can even go on shore, and drying out during low tide is rarely hazardous. They sit upright on dry land, and they're easy to trailer around.

The cost to construct, own, and maintain a centerboard cruiser is often far less than a traditional fixed- keel sailboat . This is primarily because you usually don't need a crane to pull it out of the water. Centerboard boats are often small and light enough to leave on a trailer, and their small size avoids excessive marina fees.

Disadvantages of Centerboard Sailboats

Can you cross an ocean in a centerboard sailboat? Most would caution against it. Some would say, "absolutely not," but it has happened a time or two. The issues with centerboard sailboats are size, displacement, draft, and stability, which cause problems in rough weather.

Most centerboard sailboats are only comfortable in calm coastal and inland waters. Conditions aboard a shoal-draft sailboat in foul weather range from uncomfortable to downright perilous, which is a major tradeoff. Additionally, small centerboard sailboats typically lack the cabin and storage space necessary for seagoing provisions.

Also, most small centerboard sailboats simply aren't designed for extended cruising. Things like generators, VHF radios, large freshwater tanks, and bathroom facilities usually aren't up to the task on small boats.

Centerboard Sailboat Propulsion

The smallest centerboard sailboats, such as Sunfish and Laser racers, have no propulsion system other than the sail itself. However, anything beyond 15 feet in length will probably have some alternative propulsion. Small boats have an oar or two on board, but most utilize a 5 to 10-horsepower outboard motor.

Inboard motors are rare, but a one or two-cylinder marine diesel can sometimes be found below the cockpit of a centerboard cruiser. Some small 'motor-sailer' boats have inboard engines and a centerboard for sailing.

Best Centerboard Sailboats for Cruising

Centerboard sailboats are ideal for coastal and inland cruising, and many of these pocket-sized vessels include surprisingly comfortable accommodations. These aren't dinghies or converted rowboats; they're serious sailing vessels in a compact package. Here are a few of the best 'all-around' centerboard sailboats available today.

Catalina 22

The Catalina 22 is one of the most popular sailboats ever built. It has the profile of its larger cousins (like the Catalina 27) but features a compact swing keel centerboard instead of a fin keel . At 22 feet long, the Catalina 22 is about as hardy as centerboard cruisers get.

And thanks to its retractable hinged centerboard, there's enough cabin space for a V-berth, porta-potty, stove, sink, settee, and a convertible dining area berth. The trailerable Catalina 22 is widely available on the used market, often for entry-level pricing.

West Wight Potter 19

The West Wight Potter 19 is a small centerboard pocket cruiser with a cult following. It's a fiberglass V-bottom trailer sailboat with a spacious cabin, retractable centerboard, and foldable mast. This little cruiser is capable and convenient, and it's still produced today.

West Wight Potter sailboats are famous for being (quite literally) unsinkable. They're loaded with flotation foam and stay afloat even when completely flooded. Plus, they're easy to sail, and they have an enormous amount of natural stability.

The Hunter 22 is a remarkably well-balanced centerboard cruising boat. Like the Catalina 22, this Hunter sailboat features a compact swing-type retractable centerboard. It has a spacious cabin with room to accommodate the whole family on short voyages.

Hunter designed this compact cruising sloop with a masthead rig, which is simple to operate and robust. These vessels were only produced for a few years in the 80s, but variants are plentiful, and they're plenty of fun to sail.

Centerboard Vs. Fixed Keel

Are you interested in buying a sailboat ? Deciding between a centerboard and a fixed keel is an important decision that shouldn't be overlooked. If you're looking for a trailerable weekender for short voyages and an occasional offshore run, then consider a centerboard. They're cheap and easy to store in or out of the water.

Centerboard sailboats are also ideal for island hopping, as long as the islands aren't too far from your homeport. Florida to the Bahamas is a common and manageable journey for cruising centerboard boats.

And since centerboard sailboats tend to be smaller, it's important to consider how much provision storage you'll need for the journey. Running out of food or fresh water isn't much fun in the middle of the ocean.

Fixed keelboats are ideal for extended offshore voyages and coastal cruising, especially in choppy waters. A fixed keel cruising boat offers superior roll comfort, stability, and handling in a wide range of weather conditions. They're safer in storms as well. For serious sailing, it's difficult to find an ideal alternative.

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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.

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