ICEBREAKER SHIP WITH ASTERN RUNNING PROPULSOR ENTRIES IN HEAVY ICE Russian patent published in 2001 - IPC

FIELD: shipbuilding; building of icebreaker ships equipment with astern running propulsors for operation in heavy ice. SUBSTANCE: icebreaker ship has combination framing system, fore extremity and power supply system. Fore extremity is provided with hinges where beams are secured; these beams are connected by means of cross-member and are provided with drive. Hinges are made from load-bearing fixed axle. Axle is mounted horizontally and perpendicularly relative to ship's CL. It lies above ice waterline running inside hull; axle is reliably secured to combination framing members by means of stiffeners. Ends of axle are tightly extended beyond starboard and port sides forming half-axles fastened in hinges with beams. Drive possessing high power may be hydraulic or telescopic; it is mounted in longitudinal vertical plane of icebreaker ship. End member of drive is provided with thrust platform fitted with device for reliable contact with ice field. Drive is connected with power mounted on board the ship. EFFECT: possibility of performing astern running of icebreaker ship after entry into ice field when she is nipped with no way on. 5 dwg