AN ARRANGEMENT AND A CRANE ASSEMBLY FOR DEPLOYMENT AND/ OR RETRIEVAL OF A PAYLOAD AT SEA, AND A MOVEMENT ATTENUATION PAYLOAD DEPLOYMENT AND/ OR RETRIEVAL DEVICE, AND A SNUBBER DEVICE.

摘要

An arrangement for deployment of a payload(10) from a marine structure, and/or payload retrieval onto the marine structure. The system comprises a crane assembly configured to be operatively and movably attached at an upper, first level and at a lower, second level to structures of the marine structure. The crane assembly has a) an upper part (7) which is inclined relative to the horizontal, the upper part having a first pair of longitudinal beams (8) and a reinforcing frame (8 '), and an upper end of the beams being movable along a rail system related to the first level structure, b) a lower part constituted by a second pair of beams (6) or rails which at an outer end region thereof (12) are linked to an outer end region of the upper part constituted by an outer end of the first beams of the upper part; and at the inner end region thereof (12 ') is movable relative to said second level structure; and c) a payload deployment carriage (9) which is associated with means for gripping and/or moving the payload.