Patent ID: 6990917
Filing Date: 2006-01-31
Classification: B63B,E21B

Abstract:
1. In a vessel-turret assembly including a moonpool ( 5 ) in a vessel hull structure ( 43 ) and a turret rotatably supported within said moonpool by an axial bearing structure that includes vertical wheels ( 12 ) between an upper circular rail ( 26 U) mounted on said turret and a lower circular rail ( 26 B) mounted on said vessel hull structure ( 43 ), wherein said lower rail ( 26 B) deflects due to vessel hull structure sagging in response to environmental forces, an improved turret ( 100 ) characterized by, a turret main deck ( a chain table ( a connecting structure connected between said turret main deck ( said turret arranged and designed to have a flexibility such that said upper circular rail (