MOORING ASSEMBLY FOR A VESSEL

摘要

In a mooring assembly for a vessel, comprising a moonpool defined in the vessel, a turret is rotatably mounted within the moonpool with an upper main bearing for transmitting horizontal and vertical loads between the vessel and turret and with a lower secondary bearing for substantially transmitting horizontal loads between the vessel and the turret. Mooring lines are attached to the lower region of the turret that comprises a number of circumferentially spaced torsion box like torsion members each extending substantially vertically. The torsion members resist bending in a circumferential direction that is greater than in a radial direction. The lower secondary bearing is defined by outwardly facing bearing members attached to said torsion members and an inwardly facing bearing ring attached to the moonpool. In a situation in which a torsion member is not loaded horizontally by a respective mooring line its bearing member does not engage the ring.

主权项

1. A mooring assembly for a vessel, comprising:
a moonpool defined in the vessel, a turret rotatably mounted within the moonpool with an upper main bearing configured to transmit horizontal and vertical loads between the vessel and turret and with lower secondary bearing configured to substantially transmit horizontal loads between the vessel and the turret, wherein the turret at its lower region comprises a number of circumferentially spaced torsion box like torsion members each extending substantially vertically between an upper end attached to the turret and a lower free end, which torsion members have a resistance against bending that in a circumferential direction is greater than in a radial direction, and mooring lines attached to the lower region of the turret, wherein the mooring lines are attached to said torsion members near said lower free ends and wherein the lower secondary bearing comprises outwardly facing bearing members attached to said torsion members and an inwardly facing bearing ring attached to the moonpool, and wherein in a situation in which a torsion member is not loaded horizontally by a respective mooring line an associated bearing member does not engage the bearing ring.