SHIP-LIFTING DEVICE BASED ON HYDRAULIC CABLE STEP JACK Russian patent published in 2023 - IPC B63C7/10 

FIELD: ship lifting.

SUBSTANCE: technical equipment for lifting a sunken ship using mechanical lifting forces. A ship-lifting device is proposed in the form of a solid frame, inside of which a cable stepping jack driven by a hydraulic station is installed, it is located on a vertical movement compensator with a pneumohydraulic stiffness control system, and a perforated guide plate connected to the jack to form a bundle of strands, having a connecting element at the end and stored on a reel, fed to the jack through the guide post. With the help of angular swivel joints in the form of loops, a strong frame is vertically suspended from the side of the carrier watercraft and has the ability to deviate and maintain a vertical position with transverse inclinations of the carrier watercraft during the lifting of a sunken ship under the action of a load and during rolling caused by sea confusion.

EFFECT: efficiency when lifting a sunken ship.

1 cl, 5 dwg