j27 sailboat data

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• By Bill Brockway
• Updated: February 8, 2002

The Rod Johnstone-designed J/27 was first introduced in 1983, and 211 hulls were built by 1992. This is one of the more affordable boats on our list, with an average price of $19,000. Racing it requires a crew of five to seven.

The J/27 sails to its rating best in light or heavy air and has some trouble competing in medium air, mostly because of the shorter waterline length. Some boats need simple upgrades to get ready for racing, such as new halyards, adjustable leads, and a new backstay. This is likely to cost approximately $2,500. A new suit of sails for a J/27 will be $7,500.

J/27 http://www.j27.org Typical monthly costs: $756 Annual budget range: $1,000 to $12,000 PHRF 17 to 129 LOA 27’6″ LWL 23′ Beam 8’6″ Draft 4’11” Disp. 3,800 lbs. SA 364 sq. ft.

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The J27 is a 27.5ft fractional sloop designed by Johnstone and built in fiberglass by J Boats between 1984 and 1992.

189 units have been built..

The J27 is a light sailboat which is a very high performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.

J27 for sale elsewhere on the web:

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J27 Class Site

Welcome to the J-27 Class Google Site.

1) Navigate by clicking on the drop downs at the top

2) Please check your boat on the "Class List" page, and see if the info we have is complete and correct.

3) This site is a work in progress. Come back often for new information to get the most out of your J-27.

Please join the J27 Class Google Group to participate in group discussions and edit the site.

Why so many J27 web sites?

There are a few sites and groups dedicated to the J27:

This one. This site replicates the content on from the J27 wikispace site ( http://j27.wikispaces.com/ ) that will be shut down in mid 2018. Like the wikispace site, it is unique in that it is the “unofficial” site, and its content is material only put out by owners and users of the J27, not by the class association nor the manufacturer(s). Want to know how the people that sail the boat rig it? Want to know how to secure a trailer, and what size trailer is needed as reported by those who actually tow the boat? Want to know how to seal the windows based on advice from years of practical use? You will find it here.

The J27 Yahoo Group. The group still exists and is a forum for sharing info. We've tried to bring the best of the Yahoo group to this site with the creation of the J27 Google Group.

This site is an outgrowth of conversations that have occurred among members of the Yahoo J27 Group as well as information that people have entered into the wiki pages of the site on their own. It represents the collective wisdom of J27 owners who are enjoying their boats and still keeping them competitive after 25+ years.

David Epstein started the wiki site and others have added material, had a photo contest, etc. when they saw fit. Want something posted or some information given out? You may do it yourself.

And the “official” site of the JBoat manufacturer’s interest in the J27 . http://www.jowners.org/ You must register to be accepted as a user of the site, and you must be an owner or manufacturer before you will be accepted. The webmaster is listed on the site, and the site is owned by JBoats.

Feel free to add information to this site whenever you want. It is the one that is run by the boat owners themselves and relies on the experiences and knowledge shared by those owners for the good of the J27 community. You might also attach your name so we can thank you for your help. While not as open as the wikispace, we'll post items as they come in. Please join the J27 group and share the material there. It'll have to work until we can find a better solution.

Contributors - at least somewhere on the site

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• Sailboat Guide

1987 J Boats J27

• Description

Seller's Description

Well maintained J27 with Dual Well cared for J27 - Dual Axle Trailer. Quantum sails Main and Genoa barely used. Upgrades include but are not limited to mainsail sheeting blocks, epoxy barrier coat, Black Witch Bottom paint, halyards, lifelines upgraded. J27s have been described as “one of the best PHRF boats for the buck.”

Equipment: Dual Axle Trailer. Barely used Quantum racing main and genoa. Spinnakers, heavy air jib, extra sails, tack tick racing compass, depth sounder, etc etc etc.

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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What is a J27 Sailboat? Here’s What You Need to Know

If you are a sailing enthusiast, then you have likely heard of the popular J27 sailboat.

But you may not know much about this small sailboat’s design, features, and performance capabilities.

Whether you’re interested in cruising, racing, or just getting out on the water, this article will provide a comprehensive overview of the J27 and answer all your questions about this popular sailboat.

We’ll cover the design and construction of the J27, its features, performance capabilities, cruising and racing benefits, maintenance and upkeep requirements, and its sheer popularity among sailing enthusiasts.

Let’s dive into the world of the J27 sailboat!

Table of Contents

Short Answer

The J/27 sailboat is a 27-foot keelboat designed by Rod Johnstone and manufactured by J Boats since 1988.

It is a popular one-design racing boat with an active class association.

It is a versatile boat suitable for both club racing and cruising, and is easily handled by a small crew.

The J/27 is a speedy yet stable boat, and is well-suited for day sailing and weekend trips.

Overview of the J27 Sailboat

The J27 sailboat is a light and fast racing sailboat that has become a popular choice for both racing and cruising.

It is a 27-footer, which makes it a great size for both inshore and offshore racing.

The J27 is equipped with a full-keel, fin keel, or a modified fin keel, depending on the individual model.

This gives the boat a unique combination of speed and maneuverability that makes it a great choice for racing.

The interior of the J27 is also well-equipped, with a spacious cockpit and comfortable cabin that makes it suitable for cruising as well.

The boat is designed to be able to reach speeds of up to 10 knots, and is fitted with a powerful sail plan that allows it to make the most of its speed.

The J27 is also designed to be an easy boat to sail, with an ergonomic design that allows the crew to effortlessly and quickly adjust the trim.

This, combined with the boat’s responsive handling, makes it an exciting and versatile sailboat that is sure to provide plenty of fun and excitement on the water.

Design and Construction of the J27

The J27 sailboat is renowned for its sleek design and lightweight construction, making it the perfect choice for both racing and cruising.

The boat is 27-foot long, with a full-keel, fin keel, or modified fin keel, depending on the model.

It is also equipped with a spacious cockpit and a comfortable interior cabin.

The hull of the J27 is constructed from fiberglass and is designed to be lightweight and fast.

The boat also features a deep keel, which gives it the stability and tracking needed for racing.

The keel also helps to reduce drag, allowing the boat to reach speeds of up to 10 knots.

The deck of the boat is also designed with racing in mind, featuring non-skid surfaces and strategically placed cleats and handrails.

The cockpit is also designed to be comfortable and spacious, with plenty of room for the crew.

The interior cabin is also comfortable and well-equipped, with storage compartments, a galley, and a sleeping area.

Overall, the J27 sailboat is a great choice for anyone looking for a lightweight and fast boat that can be used for both racing and cruising.

With its sleek design and lightweight construction, the J27 is sure to provide plenty of fun and excitement on the water.

Features of the J27

The J27 sailboat is a great choice for those looking for a lightweight and fast racing or cruising sailboat.

It is 27 feet long and can reach speeds of up to 10 knots.

Depending on the model, it can be equipped with a full-keel, fin keel, or modified fin keel.

This makes it incredibly versatile, allowing it to navigate inshore and offshore waters with ease.

The J27 also features a spacious cockpit, making it an ideal choice for those who want to entertain guests while out on the water.

The interior cabin is also comfortable, providing plenty of room for overnight stays or other extended trips.

The boat is also equipped with a number of safety features, such as life jackets, flares, and a fire extinguisher.

In addition to its speed and size, the J27 also features a range of sailing features that make it an ideal choice for racing.

It has a large mainsail and a genoa, as well as a spinnaker for downwind sailing.

It also has adjustable backstays that allow for fine-tuning of the sail trim.

This makes the J27 a great choice for those looking to race competitively or just enjoy a relaxing day out on the water.

Overall, the J27 sailboat is a great choice for those looking for a versatile and exciting sailboat.

It is equipped with plenty of features that make it ideal for both racing and cruising, and its size and speed make it a great choice for both inshore and offshore waters.

Whether you’re looking for a competitive edge or just a fun day out on the water, the J27 sailboat is sure to provide plenty of fun and excitement.

Performance Capabilities of the J27

The J27 sailboat is a light and fast racing sailboat, capable of reaching speeds of up to 10 knots.

The sleek 27-footer is designed for racing in both inshore and offshore waters, making it an excellent choice for those looking to get the most out of their sailing experience.

The boat is equipped with a full-keel, fin keel, or modified fin keel, depending on the individual model.

This allows the boat to be nimble and responsive in all kinds of conditions.

The full-keel provides stability and tracking, while the fin keel allows for better maneuverability.

The modified fin keel is a combination of both, allowing for a balance of stability and performance.

The J27 is also equipped with a spacious cockpit and a comfortable interior cabin, making it a great choice for cruising as well as racing.

The J27 is designed for performance, and its sailing capabilities are unmatched.

The boat is capable of reaching speeds of up to 10 knots, which is impressive for its size.

The full-keel, fin keel, or modified fin keel provide stability and maneuverability, allowing the boat to perform well in a variety of conditions.

Additionally, the spacious cockpit and comfortable interior cabin make it a great choice for cruising as well as racing.

The J27 is an incredibly versatile boat, and its performance capabilities make it a great choice for both novice and experienced sailors alike.

Cruising and Racing Benefits of the J27

The J27 sailboat is the perfect choice for those who are looking for a light and fast boat for both cruising and racing.

The sleek 27-footer is designed to reach speeds of up to 10 knots, making it a great choice for inshore and offshore racing.

The J27 is equipped with either a full-keel, fin keel, or modified fin keel, depending on the individual model, providing the perfect balance of stability and performance.

The spacious cockpit and comfortable interior cabin make the J27 a great choice for cruising as well.

The boat is designed to accommodate up to six passengers, making it a great choice for family trips or weekend getaways.

The interior cabin is equipped with everything you need for a comfortable cruise, including a galley, head, and plenty of storage space.

The J27 sailboat is also perfect for those who love to race.

The boat is designed with a deep draft hull which helps it slice through the waves for a smoother ride and offers excellent control in varying wind conditions.

The boat also comes equipped with a full sail plan, providing plenty of options for customization to suit the individual racers needs.

The J27 is an exciting and versatile sailboat that is sure to provide plenty of fun and excitement on the water.

Whether youre looking for a fast and agile racing boat or a comfortable and enjoyable cruiser, the J27 sailboat has it all.

Maintenance and Upkeep Requirements

The J27 sailboat is a great choice for racing, cruising, or both.

With its light and fast design, it can reach speeds of up to 10 knots, making it great for inshore and offshore racing.

However, like all boats, maintenance and upkeep are required to keep it running smoothly.

The J27s hull needs to be kept clean and free of barnacles and other marine growth.

Regularly cleaning the hull and applying antifouling paint will help to keep the boat running smoothly and reduce drag.

It is also important to regularly inspect the boat for signs of wear and tear, and make any necessary repairs.

The sails and rigging should also be checked regularly for wear and tear.

Sails need to be stored properly and inspected for any damage or worn spots.

The rigging should also be checked for any loose fittings or chafing.

Regularly greasing and lubricating the winches will help to keep them running smoothly.

The engine should be checked and serviced regularly to make sure it is running correctly.

The fuel tanks should also be checked for any water contamination and the fuel filters changed regularly.

The engine compartment should also be inspected for any signs of corrosion or water damage.

Finally, the interior of the boat should be kept clean and well-maintained.

The cushions should be vacuumed and cleaned regularly and any signs of mold or mildew should be treated immediately.

The boat should also be checked for any signs of water damage or leaks.

By following these maintenance and upkeep requirements, the J27 sailboat will remain in good working condition and provide many years of sailing pleasure.

Popularity of the J27

The J27 sailboat is a popular choice among sailors of all skill levels, from experienced racers to weekend cruisers.

This is due to its light weight, speed, and versatility, as well as its comfortable interior cabin and spacious cockpit.

The J27 is known for being a great boat for inshore and offshore racing, as well as for cruising.

It is a great choice for those looking for a fast and fun sailboat that can handle a variety of conditions.

The J27 is also popular among sailors for its range of keel types.

Depending on the individual model, the J27 can come with a full-keel, fin keel, or modified fin keel.

This allows sailors to choose the keel that best suits their needs and preferences.

The full-keel provides additional stability and allows the boat to sail more efficiently in light wind conditions.

The fin keel and modified fin keel are designed to be more responsive and maneuverable in higher wind conditions.

The popularity of the J27 sailboat is also due to the fact that it is easy to find parts and accessories.

With so many J27s on the water, there is an abundance of aftermarket parts and accessories available, making it easy to keep your boat running in peak condition.

In conclusion, the J27 sailboat is a popular choice for a variety of reasons.

It is light, fast, and versatile, making it suitable for inshore and offshore racing as well as cruising.

It is also easy to find parts and accessories for the J27, ensuring that it is always running in peak condition.

Whether you are an experienced racer or a weekend cruiser, the J27 is a great choice for anyone looking for a fast and fun sailboat.

Final Thoughts

The J27 sailboat is a fast and light racing sailboat that is versatile enough for both racing and cruising.

With a full-keel, fin keel, or modified fin keel, spacious cockpit, and comfortable interior cabin, this 27-footer is a great choice for any sailing enthusiast.

The J27 is sure to provide plenty of fun and excitement on the water, making it a popular choice among sailors.

So if you’re looking for a fast and exciting sailboat that can offer you the best of both worlds, the J27 should definitely be on your list.

James Frami

At the age of 15, he and four other friends from his neighborhood constructed their first boat. He has been sailing for almost 30 years and has a wealth of knowledge that he wants to share with others.

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J/27 Detailed Review

If you are a boat enthusiast looking to get more information on specs, built, make, etc. of different boats, then here is a complete review of J/27. Built by J Boats and designed by Rod Johnstone, the boat was first built in 1984. It has a hull type of Fin w/transom hung rudder and LOA is 8.38. Its sail area/displacement ratio 23.98. Its auxiliary power tank, manufactured by undefined, runs on Outboard.

J/27 has retained its value as a result of superior building, a solid reputation, and a devoted owner base. Read on to find out more about J/27 and decide if it is a fit for your boating needs.

Boat Information

Boat specifications, sail boat calculation, rig and sail specs, auxillary power tank, contributions, who designed the j/27.

J/27 was designed by Rod Johnstone.

Who builds J/27?

J/27 is built by J Boats.

When was J/27 first built?

J/27 was first built in 1984.

How long is J/27?

J/27 is 7.01 m in length.

What is mast height on J/27?

J/27 has a mast height of 10.06 m.

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J27 Sailboat Parts, Sails & Equipment

Rudder Craft

J/27 tiller wooden (54 in.), rud-jbo-27-til, copyright © 2024 mauripro sailing llc..