COMPLEX FOR RAISING SUNKEN OBJECT FROM SEA BOTTOM Russian patent published in 2007 - IPC B63C7/08 

FIELD: raising sunken objects from sea bottom.

SUBSTANCE: proposed complex includes base ship, cargo gripping unit, raising mechanism, sectionalized members interconnected together and used for connection of base ship with sunken object and mechanism for securing the sectionalized members. Lower end of sectionalized members is connected with cargo gripping unit. Raising mechanism consists of two rows of pontoons oriented along base ship. Pontoons of each row are interconnected at clearance with the aid of transversal beams. Sectionalized members are made in form of parallel lengths of steel wire ropes laid in clearance in between pontoon rows. Length of wire ropes is equal to maximum expected depth of submergence of pontoons. Pontoons are connected with base ship by means of flexible members whose length is equal to length of steel wire sections. Each pontoon is provided with pressurized cylindrical envelopes located inside it at clearance, thus forming closed cavities. Envelopes are interconnected by means of rigid strips.

EFFECT: possibility of raising sunken objects of considerable mass at low input of labor; reduction of time required for erection work.

2 dwg