HIGH-SPEED TRIMARAN Russian patent published in 2013 - IPC B63B1/00 

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to designing high-speed three-hull vessels. High-speed trimaran comprises central and two side hulls rigidly connected by bridges. Aft ends of all hulls and bridges are shaped to transom assemblies made over vessel length. Distance from design waterline to aft bridge surface makes 1-5% of ship vessel between its perpendiculars and increases at bridge fore body to 3-15% of ship length. Bridge buttock inclination to said waterline makes at least five degrees. Said bridges are longer than lateral hulls. Bridge fore parts are located ahead of lateral hulls. Fore edges of bridges are arranged at acute angle to centerline not exceeding 40 degrees.

EFFECT: decreased intensity of pitching loads acting at structural elements on rough sea, lower material input and water resistance.

2 cl, 2 dwg