Length Overall: 23'0" (7.0 m)
Length Waterline: 19'11" (6.1 m)
Draft: 3'11" (1.2 m)
Beam: 7'10" (2.4 m)
Displacement: 2,100 lb. (952.5 kg)
Ballast (lead keel): 900 lb. (408.2 kg)
Sail Area (main / jib): 250 sq. ft. (23.2 sq. m)
Spinnaker: 245 sq. ft. (22.8 sq. m)
Hull: Hand laid woven fiberglass with coremat coring for added strength and impact resistance. Every boat is carefully crafted to meet strict one-design rules. White gelcoat finish is standard; custom hull gelcoat colors are optional.
Deck: Fabricated as a one-piece insert. Lockable cuddy with hatch boards. Extruded aluminum toerail bolted through the deck and hull flange for strength and longevity.
Cockpit: 11'6" (3.5m) self-bailing cockpit for safety with full length seats, angled seatbacks for maximum comfort. Includes three seat storage lockers.
Keel: 900 pounds (408kg) of cast lead, deep fin design. Narrow, with advanced foil shape for superior windward performance. Faired and polished for optimum performance.
Rudder: High aspect ratio and very deep 3'7" (1.1m) balanced design provides excellent control and maneuverability, even under spinnaker in strong winds. Inboard location for protection and to retain the same light feel at all angles of heel. Laminated curved tiller.
Rigging: 75% fractional rig is responsive, makes handling easier. Tapered and anodized aluminum mast. Elliptical mast section is keel stepped. Swept, foil shaped spreaders, adjustable backstay and moveable mast blocking at the partners permit fine tuning. Adjustable mainsheet traveler located amidships for easy access. Running rigging is modern high-tensile Dacron fiber.
Sails: Dacron mainsail and 100% Dacron jib. Standard Cunningham, outhaul, traveler, jib halyard tension control and jib leads provide complete sail shaping ability. Spinnaker with tapered racing spinnaker pole is also standard.
Hardware: Boat is shipped “race ready,” equipped with top quality marine hardware —Harken, Ronstan, etc. Deck and cockpit fittings are mounted with stainless steel fasteners.
Trailer: Optional trailer with brakes, custom designed for the Sonar, is available. The Sonar’s 7'10" (2.4m) beam and 2,100 pounds (952kg) displacement make the boat easily trailerable. You’ll experience new waters, new friends, new events wherever you want to travel.
International Sonar UK Class Association:
c/o 5 Maryfield Drive
International Sonar Class Association
43 Cottage Farm Rd.
Carbon index Ltd
Isle of Wight