ICE-BREAKER (VERSIONS), METHOD AND SYSTEM FOR SINGLE-SUPPORT MOORING AND SERVICING OF SHIPS Russian patent published in 2003 - IPC

FIELD: shipbuilding; design of ice-breaker; methods of single-support mooring and servicing of ships. SUBSTANCE: proposed ice-breaker has hull with vertical through guide trunks and deck. Mounted on deck is diving station with diving trunk made in ice-breaker hull. Ice-breaker is provided with device for anti-ice protection of flexible hose of underwater pipe line. According to 1st version protective device is made in form of cylinder provided with guides for motion in vertical through trunk found in aft extremity of hull. According to 2nd version ice-breaker is provided with device for anti-ice protection of flexible hose of underwater pipe line made in form of pontoon having trunk for servicing flexible hose; this pontoon is secured for seat on deck. Single-support mooring and servicing system includes ice-breaker for roadstead unloading of oil. Mooring line and hose are made in form of single hose. Proposed ice-breaker may be used for roadstead unloading of oil from tank field to sea-going tanker under ice conditions. EFFECT: enhanced efficiency and reliability. 14 cl, 12 dwg