harbour 20 sailboat

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Welcome to W.D. Schock Corp., building sailboats for 70+ years!

--setting the standard, building boats since 1946 --.

Welcome to W.D. Schock Corp.

Thank you for your interest in W.D. Schock Corp. boat builders,   

We manufacture new sailboats, and offer parts/support for new and legacy boats.

We can't wait to build your next sailboat!

W.D. Schock has been building boats for more than 70 years, and more than 70 different design builds. One of our favorite boats, the Harbor 20 is a perfect option for clubs wanting to start a race series with fun, comfortable, convenient racing sailboats. The Harbor 20 is a perfect choice for first time or seasoned sailors. 

We look forward to making your sailing dreams come true!

 Be a part of our continued legacy, call today and let us customize your next sailboat! 

(951) 277-3377

W.D. Schock Corp. Highlights

• W.D. Schock has been designing & producing boats for over 70 years
•  SAIL Best Boat Award Winner for the Harbor 30 
• We have built more than 15,000  boats that are sailing all over the world
• Our sailboats are still proudly made in the USA in Southern  California, call us for a tour- we pride ourselves in our boat building  process! 
• We have built over 70 different boat designs and continue to grow

Genuine Schock Parts are available from our national network of stocking dealers or direct from the factory via telephone sale at  (951) 277-3377. 

W.D. Schock is one of the last sailboat builders in Southern California.

Ready to purchase your next sailboat?

 Be a part of our legacy, call today  and let us build your next sailboat.  (951) 277-3377

Copyright © 2024 WD Schock - All Rights Reserved.

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• Sailboat Guide

Harbor 20 is a 20 ′ 0 ″ / 6.1 m monohull sailboat designed by Steven Schock and built by Schock W.D. and One Design Composites starting in 1997.

• 2 / 8 Newport Beach, CA, US 2001 Harbor 20 $28,000 USD View
• 3 / 8 Punta Gorda, FL, US 2003 Harbor 20 $18,500 USD View
• 4 / 8 Newport Beach, CA, US 2001 Harbor 20 $28,000 USD View
• 5 / 8 Punta Gorda, FL, US 2003 Harbor 20 $18,500 USD View
• 6 / 8 Newport Beach, CA, US 2001 Harbor 20 $28,000 USD View
• 7 / 8 Punta Gorda, FL, US 2003 Harbor 20 $18,500 USD View
• 8 / 8 Punta Gorda, FL, US 2003 Harbor 20 $18,500 USD View

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)

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The Harbor 20 is a great alternative to the Lido 14 for beginning students who prefer the stability and comfort of a keelboat. The Harbor 20’s cockpit easily accommodates three students and an instructor and no one needs to sit on the rail to balance the boat, or duck under the boom when tacking. Deep coamings provide comfortable back support.

All halyards and lines are let below the deck where they lead to hardware mounted on a shelf at the aft edge of the cuddy cabin. This design keeps everyone in the cockpit, the deck clean, simplifies sail control, and allows sailing to become second nature.

The Harbor 20 was designed with simplicity in mind and a competitive spirit at heart, whether you’re sailing upwind or downwind.

  Layout & Specifications

LOA: 20′ Waterline length: 17′ Beam: 7′ Draft – fin keel: 3’6″ Displacement: 1,800 lbs Ballast: 900 lbs Main Sail Area: 151 sq. ft. Jib Sail Area: 81 sq. ft. Safety Gear: All USCG required safety gear

Published on July 29th, 2015 | by Editor

Harbor 20: Hitting the Target

Published on July 29th, 2015 by Editor -->

Like any good yachting story, the Harbor 20 was conceived in a bar, where a brainstorming session at Newport Harbor Yacht Club would result in the first launch by 1997, with now 416 boats delivered (and rising).

This group in Southern California desired a day sailing/racing boat that was suitable for a very broad range sailors, a target which has found its mark out east too. In 2012, Howard Brooks started Harbor 20 Fleet 5, which is located in Annapolis, MD. With numbers in the mid-teens a year ago, the fleet now boasts two dozen boats.

“The selection of the Harbor 20 sailboat is a growing phenomenon at Annapolis Yacht Club,” Brooks notes. “The boat’s design, style and performance have compelled a number of members to get back into sailing. This is true of not only past sailors, but also current sailors who want a simpler boat that provides both racing and social sailing opportunities.”

The format of the races caters to more mature sailors that like to race but prefer shorter races limited to few hours during the day. Weekday evening or Frostbite type race formats are preferred, though on occasion there are weekend races.

“The membership is engaged in the racing and typically we see more than ten boats turnout,” said Fleet Captain Marino DiMarzo. “At the Leukemia Cup in May we had all 24 boats on the starting line. There is a lot of interest since the boat and the activities cater to racers who may not be active in more traditional classes or in PHRF.”

DiMarzo sees their steady growth a result of what that initial brainstorming session was after.

“The boat is particularly comfortable and easy to maintain, and you can race very competitively single handed or with two or three people,” observes DiMarzo. “But it is not just about the racing. There are social activities on land during the winter and on the water during the season. These events attract a large portion of the membership. Most important of all, the people are very nice and it is a highly welcoming group.”

Keeping everyone moving in the same direction is the key to success at the fleet level.

“The fleet membership receives a weekly update via email and issues are discussed and addressed promptly,” reports DiMarzo. “We try to assist the various members with tips or fixes on their respective boats. We have a fleet sailmaker and we work closely with him to insure that the sails are consistently performing. We have developed tuning guides and we hold seminars on sail trimming, rules, and tactics on a yearly basis.”

Brooks notes how the creation of Harbor 20 fleet has resulted in new members joining Annapolis Yacht Club. “The unique aspect of the Harbor 20 owners is a common desire to get together socially and enjoy company of fellow Fleet 5 members.”

Plans are underway for the first national championship to be held in 2016 in Newport Beach, CA and with the Annapolis fleet to host the event in 2017.

Class details – Fleet 5 details – Builder information

Tags: Harbor 20 , Keeping it real

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Sail a Harbor 20 in Newport Beach

The Harbor 20 Sailing Club is the convenient and low cost alternative to buying your own Harbor 20.

Imagine sailing a beautiful Harbor 20 sailboat without having to spend $35,000 to buy it and $850 every month to keep it in a slip!

The Harbor 20 Sailing Club will keep the boat clean and well maintained for you. You don’t have to worry about maintenance, insurance or slip fee.  Our boats are comfortable and sit up to 4 adults and a few kids if you choose.

The cost is only $595 per month and provides you 3 half-day sails per month.  Details can be found on the Harbor 20 Club Membership page.

On the following pages, you can learn about membership and sailing instruction.  You can also learn about purchasing your own Harbor 20 and placing a boat in our rental fleet.  Thank you for visiting the Harbor 20 Sailing Club!

Contact Us for more information.

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Harbor 20 Class Association

Category: current ads, for sale: h20 #517.

H20 2017 sail # 20 $29,500.00

Blue Hull, white deck, recently painted Vivid Red bottom paint, excellent condition.

Mast is in excellent condition, no corrosion.

Torquedo Motor & Battery with new AGM Battery and battery charger.

North Sails, main sail only used a few times.  Jib new in 2020.  Navy Blue Asymmetrical Spinnaker.

Cockpit cushions in silver.

Covers, jib sock, boom and cockpit covers, tiller cover in navy in great shape.

5 pop-up dock cleats with forward chocks, fenders, and life jackets.

Boat shows 9 out of 10.  A few minor scratches to be expected with a 2017.

More photos upon request.

Located in Nashville, Tennessee.

Kept in fresh water since purchased new.

Trailer included, in good condition.

(Note: Sail # does not currently match the Hull #, but may be modified.)

Contact Brock at [email protected] or 615-504-1669.

FOR SALE: H20 #375

H20 2015 sail #375  $30,000

Red Hull, white deck, recently black sprayed bottom paint excellent condition.

Mast is in excellent condition no corrosion

Recently replaced torqueedo motor and controller

Ullman Sails, main sail only used a few times jib looks fresh.

Covers,  jib sock, boom and cockpit covers in great shape.

5 pop-up dock cleats with Forward Chocks

Boat shows 9 out of 10 few minor scratches to be expected with a 2015.

More photos upon request

Located in Santa Barbara, California

Trailer available at an additional cost

Delivery also available

Contact Rick: [email protected]

SELLING YOUR HARBOR 20?

Looking to purchase your Harbor 20, if you’re considering selling your Harbor 20 contact me, I am a cash buyer willing to purchase as is, where is, for a fair price, no brokers please.

[email protected]

HARBOR 20’s FOR SALE

I am an independent Harbor 20 sailboat specialist supplying replacement parts and advice to 100’s of customers around the US.  I constantly have various Harbor 20’s For Sale.

Please call me,  Philip Thompson, to talk about current listings, all over the USA and Canada,  I can also advise on a purchase you might be thinking of making and transportation. There are many things to be aware of. Is the boat one of the “light weight” group? What jib boom configuration does it have? Motor status? Mast cracking? Repair costs? Cushions?  Please call me at 714 329 1995  or email at

   [email protected]      www.Just-Marine.net

FOR SALE – H20 #115

Sale pending….

I purchased the boat from Tom Schock at WD Schock in March of 2010 as the second owner.  This boat was originally day sailed at Big Bear Lake and then moved to Elephant Butte Lake in southern New Mexico after purchase.  This is a fresh water only boat.  The bottom paint is new, Pettit Vivid white with Pettit epoxy barrier.  The mast and standing rigging were replaced at the time of sale.  A swim ladder was also purchased from WD Schock.  The spinnaker was purchased new in 2010, Elliott/Pattison asymmetric spinnaker, and has never been used.   The mainsail, jib and running rigging are original.  The trailer tires are probably original as well.  The motor controller has been rebuilt and the electric motor runs well.  The two marine batteries have been on a battery maintainer.

The boat is currently stored at Elephant Butte Lake in my building and has been not been sailed in about 3 years.

Asking $ 16,000.00  

505-328-6118

If you interested call me. I can provide the sale sheets from WD Schock in 2010, and a replacement value estimate.

Please, NO texts.

Reconditioned Harbor 20 Sails and Furler

Asking $1200.

These sails and headsail furler are from a Schock Marine Harbor 20 daysailer. They have been lightly used and were sent to Sail Care this last winter to be reconditioned with the Le Mauney process. New sails are $1528 (main) and $796 (jib).  The CDI furler lists for $676. Total new is around $3000…..if you’re not racing you’ve got a perfect set of class legal sails and furler for a daysailer at 60% off.

[email protected]

607-731-5902

For Sale: Harbor 20 #241

Asking price: $28,500.

• No damage history
• Shift Compass
• Spinnaker gear, no pole
• New Motor, New Glass mat batteries, new potentiometer
• custom emron hull paint Midnight Blue
• perfect bottom job
• pop up cleats
• New Doyal sails by Judd Smith
• Four sets of lightly used Ulman sails
• New Cover and jib sock
• cuddy coolers
• Galvanized custom trailer

For Sale: 2016 – Harbor 20 – Hull #422

Price:  $28,500 with Trailer

422 is Like New, Heavily-optioned, Lightly used, Never been raced, & Never had an accident.

She includes every option offered by WD Schock, specifically:

• Dark Blue Hull, White waterline stripe, Red cove stripe, light Gray non-skid, & New bottom paint
• Torqueedo 1003 (3 hp) System, second battery, charger, switch panel, & shore power
• Fitted sunbrella full cockpit cover, jib sock, & Sun Awning w/ poles – all light gray
• C-Foam cockpit cushions – light gray
• Cockpit table, Stainless Swim Ladder, bow chocks, dock lines, fenders, & cuddy coolers
• Safety equipment: Life jackets, fire ext, flares, anchor w/ galv chain, lifting bridle, etc.
• Plus all std equip: windex, bilge pump, tiller ext, nav lights, pop up cleats, boom crutch, etc.

422 has lived an easy life, having been taken out less than 2 dozen times.  Currently stored indoors, she is covered on her trailer here in Honolulu, HI.  Price includes shipping to California.

Original invoice ($44,800, without trailer) available on request.

For more information, please contact Chris Jester 949 274-1409 or [email protected]

Harbor 20 For Sale

With her classic good looks, comfortable cockpit, and her ability to perform well for both the experienced racer and the newbie sailor, the Schock Harbor 20 is easy to own and easy to love. “Comfort Too” is a beautiful Stars & Stripes blue. The engine is Motorguide, 2-blade propeller. She also has the desirable spinnaker package.

• Current Price: US$ 26,500
• Located in Santa Barbara, CA

Please contact Chandlery Yacht Sales at 805-965-4538 for details.