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Sailboat Specifications

J/28

Masthead Sloop · Fin W/Spade Rudder

Designed by Rod Johnstone · First built 1986

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LOA 28.50 ft  ·  Beam 10.67 ft  ·  Displacement 6,800 lb  ·  Sail Area 390 ft²  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the J/28 Sailboat

Designed by Rod Johnstone and produced between 1986 and 1988, the J/28 is a performance-oriented sloop that reflects the J/Boats legacy of building fast, responsive sailboats with broad appeal. With only 75 hulls ever produced, it remains a relatively rare find on the used boat market, which makes it a distinctive choice for sailors seeking something a little off the beaten path. The J/28 carries a masthead sloop rig and a fin keel with spade rudder — a configuration well-suited to lively, responsive sailing. Its sail area-to-displacement ratio points to a boat with solid performance potential, particularly in moderate to fresh breeze conditions, making it well-matched for both club racing and spirited coastal daysailing. The hull speed suggests capable passage-making for coastal cruising as well. The comfort ratio indicates a firmer, more performance-focused ride rather than a plush offshore cruiser, so prospective buyers should approach this as a sporty coastal boat rather than a long-distance passagemaker. For sailors who prioritize helm feel, competitive sailing, and the pedigree of a classic J/Boats design, the J/28 offers an engaging and rewarding experience on the water.

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Market Price Estimate Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$19,500 – $19,500
typical asking price
Median $19,500  ·  1 listing used
All listings
$19,500 – $19,500 1
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Dimensions & Specifications
LOA (Length Overall) 28.50 ft / 8.69 m
LWL (Waterline Length) 23.50 ft / 7.16 m
Beam 10.67 ft / 3.25 m
Max Draft 5.50 ft / 1.68 m
Displacement 6,800 lb / 3,084 kg
Ballast 2,600 lb / 1,179 kg
Sail Area (Reported) 390 ft² / 36.23 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Rod Johnstone
First Built 1986
Last Built 1988
Number Built 75
Related Sailboats Pearson 28 2 · Ericson 28 · Hunter 285 · Cc 29 2 · Sabre 28 3
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Frequently Asked Questions

What is the J/28's sail area to displacement ratio?

The J/28 has a Sail Area to Displacement ratio (SA/D) of 19.64. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the J/28's comfort ratio?

The J/28 has a Ted Brewer Comfort Ratio of 24.57. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the J/28 safe for offshore sailing?

The J/28 has a Capsize Screening Formula value of 1.71. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the J/28?

The theoretical hull speed of the J/28 is 7.41 knots, calculated from its waterline length.

How much does a J/28 weigh?

The J/28 has a displacement of 6,800 lb and a length overall (LOA) of 28.50 ft.

How much does a used J/28 cost?

Based on 1 recent market listings, used J/28 sailboats typically sell for between $19,500 and $19,500, with a median asking price of $19,500. Price varies significantly based on year, condition, location, and included equipment.

Who designed the J/28?

The J/28 was designed by Rod Johnstone, first built in 1986.