In a heave motion compensation system and method for adjusting heave motion compensation, for use with an offshore hoisting device, the heave compensation is provided by, firstly, a cylinder having a piston, which is to be connected to a gas buffer for providing the hoisting device with passive HC, and secondly a sheave head, including one or more sheaves for engaging a hoisting wire of the hoisting device, wherein the sheave head is supported by the piston for movement along a HC-trajectory, and thirdly a sheave head track, extending parallel to the HC-trajectory. The adjusting of the passive HC is realized by adjusting movement of the piston of the heave compensation cylinder using an adjusting winch connected to the piston of the cylinder via a trolley supported by a trolley track, which track is located adjacent the HC-trajectory.
HEAVE MOTION COMPENSATION SYSTEM
2020-02-13
Patent
Elektronische Ressource
Englisch