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 a plurality of hydraulic 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; and 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; characterized in that the hoisting system is further configured to perform fixed-to-bottom operations where equipment attached to the floating vessel is fixed to the sea floor; wherein the hoisting system comprises a hydraulic system wherein the hydraulic system comprises a plurality of accumulator reservoirs for accommodating hydraulic fluid, wherein each of the plurality of emergency brakes is provided with a separate accumulator reservoir configured to maintain the emergency brakes in the disengaged state by applying a hydraulic pressure to each of said emergency brakes by means of a pressurized fluid; wherein the accumulator reservoirs are configured to allow maintaining of the operational pressure on the emergency brakes, at least for a period of time, even in case of failure of the hydraulic system, thus preventing the emergency brakes from engaging during fixed-to-bottom operations; wherein the hoisting system, when operated in the active heave compensation mode, is further adapted to stop active heave compensation responsive to one or more predetermined error conditions; and wherein the hoisting system, when performing fixed-to bottom operations, is adapted to maintain active heave compensation despite said one or more predetermined error conditions. 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; and 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; characterized in that the hoisting system is further configured to perform fixed-to-bottom operations where equipment attached to the floating vessel is fixed to the sea floor; wherein the hoisting system comprises a hydraulic system wherein the hydraulic system comprises a plurality of accumulator reservoirs for accommodating hydraulic fluid, wherein each of the plurality of emergency brakes is provided with a separate accumulator reservoir configured to maintain the emergency brakes in the disengaged state by applying a hydraulic pressure to each of said emergency brakes by means of a pressurized fluid; wherein the accumulator reservoirs are configured to allow maintaining of the operational pressure on the emergency brakes, at least for a period of time, even in case of failure of the hydraulic system, thus preventing the emergency brakes from engaging during fixed-to-bottom operations; wherein the hoisting system, when operated in the active heave compensation mode, is further adapted to stop active heave compensation responsive to one or more predetermined error conditions; and wherein the hoisting system, when performing fixed-to bottom operations, is adapted to maintain active heave compensation despite said one or more predetermined error conditions.