Damping apparatus for moonpool
AssigneesDaewoo Shipbuilding & Marine Engineering Co., Ltd., Transocean Sedco Forex Ventures Limited
InventorsSeong Deok Yun, Gurbachan Virk
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Abstract
Provided is a damping apparatus for a moonpool, which has a simple driving mechanism. The damping apparatus includes one or more damping plates which cover a moonpool of a hull entirely or partially. The damping plates are pivotally hinged to a sidewall of the moonpool, and one or more conveying units are disposed above the moonpool to convey drilling equipment. Driving wires are coupled between the conveying units and the damping plates, and the conveying force of the conveying units is transferred through the driving wires to the damping plates. Thus, the damping plates are pivoted to open and close the moonpool entirely or partially.
Claims8
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.
Dependencies are inferred from the claim text.