J/27

The J/27 is a keelboat built by J/Boats. It is both a weekend cruiser and a One-Design racing class with strict class rules. Designed with a low & heavy keel with a generous sail area, the boat gives good handling in both light and strong winds, though struggles in moderate winds.[1][2]

J/27
Class symbol
Development
DesignerRod Johnstone
Year1983
DesignOne-Design
Boat
Crew4 or 5
Draft1.49 m (4 ft 11 in)
Hull
TypeMonohull
ConstructionGRP
Hull weight1,724 kg (3,801 lb)
LOA8.38 m (27.5 ft)
LWL7.16 m (23.5 ft)
Beam2.59 m (8 ft 6 in)
Hull appendages
Keel/board typeFixed 694 kg (1,530 lb)
Rig
Rig typeFractional rig
Sails
Mainsail area19.16 m2 (206.2 sq ft)
Jib/genoa area14.63 m2 (157.5 sq ft)
Spinnaker area52.68 m2 (567.0 sq ft)
Upwind sail area33.8 m2 (364 sq ft)
Racing
PHRF120

Design

J-27 on its trailer, showing the fin keel and rudder configuration
J-27

The J/27 is a Fractional rigged sloop designed by Rod Johnstone and built by Tillotson Pearson, Inc. between 1983 and 1992. 211 boats were built in total before being replaced by the J/80.

A large cockpit and open decks allows crew to move around easily and the Fractional rig means that sail costs are kept down.

The boat comes with a galley with a standard water capacity of 5 gallons and 4 bunks. Below decks headroom is 4.5 feet (1.4 m). The boat has an outboard engine placed on the transom (port side).

Other Specifications

  • I: 30.00 feet (9.14 m)
  • ISP: 30.00 feet (9.14 m)
  • J: 10.50 feet (3.20 m)
  • P: 33.00 feet (10.06 m)
  • E: 12.50 feet (3.81 m)
  • SPL: 10.50 feet (3.20 m)
  • Displacement to length ratio (Disp/L)= 139.
  • Sail Area to displacement ratio (SA/Dspl)= 24.[3]
gollark: Maybe they're both converted to radians internally. Maybe revolutions are defined that way.
gollark: bad_use_of_floats_irl?
gollark: floats_irl
gollark: Acceptable.
gollark: Gradians are NOT permissible.

See also

Notes

  1. "J/27". J-Boats. Retrieved 30 January 2013.
  2. "Sailing World - J/27 Review". Sailing World. Retrieved 30 January 2013.
  3. General Dimensions

Media related to J/27 at Wikimedia Commons


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