Patent ID: 8695522

Claim:
A monohull offshore drilling vessel, comprising: a hull having a moonpool, a main deck and a hold, said hold having a floor and a side wall; a firing line hoist system mounted on the hull at the moonpool, said firing line hoist system comprising a mast connected to the hull of the drilling vessel; a pipe storage configured to store drill pipes in a substantially horizontal position; a riser storage configured to store risers in a substantially horizontal position; and at least one fuel tank configured to store engine fuel, the at least one fuel tank being arranged on the floor of the hold, wherein at least one of the pipe storage and the riser storage extends to the floor of the hold, wherein the at least one fuel tank includes a plurality of fuel tanks equally distributed over a port side and a starboard side of the vessel, and wherein at least one of the fuel tanks is arranged adjacent to at least one of the pipe storage and the riser storage.