Offshore floating vessel and a method of operating the same
First Claim
1. An offshore floating vessel comprising:
- a hoisting system adapted for suspending a load attached to a connecting device of the floating vessel and for lowering or raising 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 connecting device;
a plurality of hydraulic emergency brakes configured to inhibit motion of the connecting device relative to the floating vessel when the brakes are in an engaged state;
a hydraulic system configured to maintain the emergency brakes in a disengaged state by applying a hydraulic pressure to each of said emergency brakes by means of a pressurized fluid;
wherein the hoisting system is configured to be selectively 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 each emergency brake of the plurality of hydraulic emergency brakes has associated with it a separate accumulator reservoir in the hydraulic system.
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Accused Products
Abstract
An offshore floating vessel includes a hoisting system including a drive for moving connecting device and emergency brakes to inhibit motion of the connecting device; wherein the hoisting system is to be operated at least in a hoisting mode and in an active heave compensation mode; wherein hoisting system is 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 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 connecting device relative to the floating vessel; wherein each emergency brake of the plurality of hydraulic emergency brakes has associated with it a separate accumulator reservoir.
34 Citations
18 Claims
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1. An offshore floating vessel comprising:
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a hoisting system adapted for suspending a load attached to a connecting device of the floating vessel and for lowering or raising 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 connecting device; a plurality of hydraulic emergency brakes configured to inhibit motion of the connecting device relative to the floating vessel when the brakes are in an engaged state; a hydraulic system configured to maintain the emergency brakes in a disengaged state by applying a hydraulic pressure to each of said emergency brakes by means of a pressurized fluid; wherein the hoisting system is configured to be selectively 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 each emergency brake of the plurality of hydraulic emergency brakes has associated with it a separate accumulator reservoir in the hydraulic system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification