SHIPBOARD DEVICE FOR RAISING SUNKEN OBJECT Russian patent published in 1994 - IPC

FIELD: raising sunken objects. SUBSTANCE: device has raising platforms located one under another and connected in succession with trusses and with each other by means of straight tackle block systems. Lower platform has cargo, hydraulic system of power hydraulic cylinders and devices for orientation of the platform. Located on the trusses in tiers are supports on which the raising platforms are locked in the initial position. Winches are arranged in the bow and in the stern of the ship which carries raising platforms. The winches are also arranged in tiers. Working ends of ropes of each straight tackle block are linked with respective winch through lock-disconnector and trailing end is linked with equalizing device. Raising platforms are made in form of pontoons. EFFECT: enhanced reliability. 5 cl, 9 dwg