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Sailboat Specifications

J27

Fractional Sloop · Fin W/Transom Hung Rudder

Designed by Rodney S. Johnstone · Built by J Boats Tillotson Pearson · First built 1984

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LOA 27.50 ft  ·  Beam 8.50 ft  ·  Displacement 3,800.00 lb  ·  Sail Area 364.00 ft²  ·  Fractional Sloop  ·  Fin W/Transom Hung Rudder
About the J27 Sailboat

Originally launched in the early 1980s, this J/Boats design represents the company's commitment to creating versatile sailboats that balance performance with accessibility. Rod Johnstone's design philosophy shines through in this compact cruiser-racer, which quickly gained recognition among sailors seeking a boat capable of both weekend racing and comfortable daysailing. The J27 embodies the classic J/Boats DNA with its clean lines, moderate displacement, and well-proportioned sail plan. Built during an era when the company was establishing its reputation for producing fast, well-handling boats, this model demonstrates the design principles that would make J/Boats a household name in sailing circles. Suited primarily for coastal cruising and club racing, the J27 offers an ideal platform for sailors looking to experience spirited performance without the complexity of larger racing machines. The boat's responsive handling characteristics make it particularly appealing for those transitioning from smaller dinghies or seeking an engaging sailing experience in protected waters. With its thoughtful design and solid construction typical of early J/Boats models, the J27 continues to attract sailors who appreciate straightforward, honest sailing characteristics combined with reasonable accommodation for weekend adventures.

Dimensions & Specifications
LOA (Length Overall) 27.50 ft / 8.38 m
LWL (Waterline Length) 23.00 ft / 7.01 m
Beam 8.50 ft / 2.59 m
Max Draft 4.90 ft / 1.49 m
Displacement 3,800.00 lb / 1,724 kg
Ballast 1,530.00 lb / 694 kg
Sail Area (Reported) 364.00 ft² / 33.82 m²
Design & Construction
Hull Type Fin w/transom hung rudder
Rigging Type Fractional Sloop
Construction FG
Designer Rodney S. Johnstone
Builder J Boats Tillotson Pearson
First Built 1984
Last Built 1992
Related Sailboats Mirage 275 · Sr 27 · Contessa 27 · Cal 27 · Tanzer 28
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Frequently Asked Questions

What is the J27's sail area to displacement ratio?

The J27 has a Sail Area to Displacement ratio (SA/D) of 23.98. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the J27's comfort ratio?

The J27 has a Ted Brewer Comfort Ratio of 13.94. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the J27 safe for offshore sailing?

The J27 has a Capsize Screening Formula value of 2.18. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the J27?

The theoretical hull speed of the J27 is 6.43 knots, calculated from its waterline length.

How much does a J27 weigh?

The J27 has a displacement of 3,800.00 lb and a length overall (LOA) of 27.50 ft.

Who designed the J27?

The J27 was designed by Rodney S. Johnstone, first built in 1984.