SYSTEM FOR REPAIR AND SERVICING OF UNDERWATER PRODUCTION COMPLEXES IN ICE CONDITIONS Russian patent published in 2015 - IPC B63G8/00 B63C11/48 

FIELD: transport.

SUBSTANCE: proposed system comprises carrier craft to be submerged from support vessel which is equipped with underwater robot connected with said surface support vessel via power cable, control cable and preventer. Driving ballast tanks shaped to circular sectors in plan and provided with vent valves arranged at their top part and sea grates at their bottom and equalising ballast tanks are additionally incorporated with this system. Said tanks are interconnected by rigid split fasteners in perimeter of their adjacent surfaces to make a circular hull of underwater carrier craft and spaced apart by, primarily, equal spacings and are located equidistant from said circular hull centre. Carrier craft is equipped with compressed air cylinders, manipulators, their control unit and propulsion-steering complex composed by rotary propulsors with drives, compressed air systems and equalising ballast. Support vessel hull has underwater carrier craft and robot up and don silo.

EFFECT: enhanced operating performances.

5 cl, 6 dwg