HIGH-SPEED VESSEL Russian patent published in 1997 - IPC

FIELD: shipbuilding; design of planing boats. SUBSTANCE: vessel has hull with fore transverse planing step located on it and main bearing planing step. Fore transverse planing step has varying deadrise with flat or rising central section intersecting the line of keel; width of this central section is equal to 0.1-0.4 of width of main bearing planing step and may emerge through depth equal to 0.01-0.25 of its width. Planing section of bottom is located in aft portion of vessel; carrying width is limited by skegs. Besides that, bottom has deadrise angles of 15 to 90 deg over edges from central section of fore planing step in way of its span; depth of aft skegs is equal to 0.05-0.15 of width of main bearing planing step and aft planing section has flat bearing surface. Central section of fore planing step is provided with skegs; distance between these skegs is equal to width and maximum depth of skegs is equal to 0.1-0.3 of width between them. EFFECT: enhanced reliability. 3 cl, 4 dwg