AN 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 and one or more emergency brakes configured to inhibit motion of the connecting 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 connecting 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.
2 Assignments
0 Petitions
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 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 the hoisting system is operable in a fixed-to-bottom mode; wherein the hoisting system is to perform an active heave compensation when operated in fixed-to-bottom mode; and wherein the hoisting system is adapted to prevent the emergency brakes from engaging.
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Citations
11 Claims
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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 and one or more emergency brakes configured to inhibit motion of the connecting 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 connecting 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- the hoisting system comprising a drive for moving the connecting device and one or more emergency brakes configured to inhibit motion of the connecting device relative to the floating vessel;
Specification