Classes/TrimaranClassesTRClassesShareTRClassTrimaranTRTRClassTrimaranTrimaranGeneric category of sailboats with three hulls: a central hull and two side floats joined by cross-beams. It is not a single box-rule class; it covers Ultims, Ocean Fifties and other racing trimarans.ShareBoats61Generations—Boats · Generations61 · —Races1Skippers52Founded1978ProfileRacesBoatsSkippersStatistics