VESSEL AND METHOD FOR PERFORMING SUBSEA WELLBORE RELATED ACTIVITIES, E.G. WORKOVER ACTIVITIES, WELL MAINTENANCE, INSTALLING AN OBJECT ON A SUBSEA WELL BORE

摘要

The invention relates to a vessel (1) for performing subsea wellbore related activities such as workover activities, well maintenance, installing an object on a subsea well bore (2), wherein the vessel comprises a floating hull (3), a hoisting device (7), a mobile working deck (15) and a mobile deck compensator (18). According to the invention, the vessel is configured to enable the hoisting device to lower and lift objects in a firing line below the mobile working deck.