METHOD OF RAISING SUNKEN OBJECT Russian patent published in 2002 - IPC

FIELD: raising sunken objects. SUBSTANCE: method consists in mounting system of tubular heat exchangers on untight portion of hull of sunken object, supplying cryogenic fluid to these heat exchangers for sealing the untight portion with ice but for drain hole in lower portion of hull and supplying gas formed due to gasifying of cryogenic fluid inside sunken object. Trim by extremity where drain hole is located shall be created by placing the pontoons on hull of sunken object at shift of resultant of their lift force relative to center of object to side opposite to drain hole. EFFECT: reduced number of ship-raising pontoons; reduced mass of ship-raising unit; reduced consumption of cryogenic fluid. 1 dwg