| 摘要 |
An offshore floating vessel comprising a hoisting system adapted for suspending a load attached to a connection device of the floating vessel and for raising or lowering a load connected to the connecting device from the floating vessel to or from the sea floor; the hoisting system comprising a drive for moving the connection device and one or more emergency brakes configured to inhibit motion of the connection device relative to the floating vessel; wherein the hoisting system is configured to be operated at least in a hoisting mode and in an active heave compensation mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the active heave compensation mode and to operate without active heave compensation when operated in the hoisting mode; wherein the one or more emergency brakes are operable in a normally-energized mode including a de-energized state where the emergency brakes engage so as to inhibit motion of the connection device relative to the floating vessel; wherein the hoisting system is further operable in a fixed-to-bottom mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the fixed-to-bottom mode; and wherein the hoisting system is adapted to prevent the emergency brakes, at least temporarily, from engaging. |
