Patent ID: 6178910
Filing Date: 2001-01-30
Classification: B63B

Abstract:
Offshore mooring construction comprising at least one swivel (8,9) comprising an outer (11) and an inner (10) annular wall defining a ring-shaped central chamber (12), the walls (10,11) each comprising an opening (13,14) which is in fluid communication with the central chamber (12), one of the walls (10,11) being connected to a riser (6,35) extending from a subsea structure to the swivel (8,9), the other of the walls (10,11) being connected to a product supply duct (15,40), characterized in that the inner wall (10) is rotatably suspended from or supported by a swivel support structure (16,37), the inner wall (10) being further connected to rotation drive means (18,41) for rotating the inner wall (10) with respect to the support structure (16,37).