Patent ID: 8955596
Filing Date: 2015-02-17
Classification: B63B,B63J,E21B

Abstract:
1. A damping apparatus for a moonpool in a ship having an enclosed derrick disposed over the moonpool, the apparatus comprising: a damping plate comprising a proximal end and a distal end, wherein the proximal end of the damping plate is hinged to a first point of a sidewall of the moonpool such that the damping plate is pivotally movable between an open position and a closed position; a driving mechanism disposed within the enclosed derrick and configured to move drilling equipment within the enclosed derrick; a sheave attached to the sidewall at a second point of the sidewall, which is higher than the first point; a cable coupled between the damping plate and the driving mechanism via the sheave such that the driving mechanism drives pivotal movement of the damping plate in addition to moving the drilling equipment.