J105

The J/105 is a class racing yacht built to preserve recreational features such as ease of handling, low cost of ownership, safety, comfort, and equality of performance. These rules ensure that J/105s remain alike in hull, deck, keel, rudder, and spar construction, as well as weight distribution, sail plan, equipment, and interior furnishings.

Key specifications include a Length Overall (LOA) of 10.51 meters, a Waterline Length (LWL) of 8.99 meters, and a Beam of 3.35 meters. The standard draft is 1.98 meters, with a standard ballast of 1,542 kg. The displacement is 3,515 kg, and it is powered by a 20 hp engine.

The hull and deck are constructed using Lloyd's approved, aircraft-grade AL600 epoxy-coated CK57 balsa laminate with polyester resin and biaxial glass fabrics, featuring a vinylester resin barrier coat. All yachts must comply with standard specifications published by J Boats, Inc. and class rules, with no unauthorized alterations or modifications permitted.

J/105s are built only by licensed builders and must comply with J/105 building specifications. Each boat is assigned a building number by J Boats, Inc. Molded fiberglass parts, spars, rudder, keel, engine, and prop are supplied by J Boats, Inc. or their authorized agents.