Method of handling a unit in a marine vessel and an assembly in a marine vessel
AssigneeWartsila Netherlands B.V.
InventorAad Van Der Kam
Life of this patent
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Abstract
A method of handling a unit arranged in a watertight hoisting chamber opening into a hull of a vessel is provided. The unit is adapted to extend into the water below the vessel when installed at its mounted position. The unit is clamped in its mounted position by clamping means and releasing fixing means fix the unit into its mounted position while holding the unit clamped in position. The hoisting chamber is at least partly flooded, the clamping means are simultaneously released and the unit lifted from its mounted position by applying a lifting force to the unit by lifting devices, and the unit is hoisted away from the hoisting chamber.
Claims16
A method of handling a unit in a watertight hoisting chamber opening into a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when installed at its mounted position, while a flange in the unit closes an opening in the vessel hull when the unit is mounted to the vessel, the method comprising steps of:
- clamping the unit in a mounted position by clamping means,
- releasing fixing means fixing the unit into the mounted position in regard to the opening in the vessel hull while holding the unit clamped in position by clamping means,
- at least partly flooding the hoisting chamber,
- detaching the unit by simultaneously releasing the clamping means and lifting the unit from the mounted position by applying lifting force to the unit by lifting devices under a plate portion of the flange in the unit, and
- hoisting the unit away from the hoisting chamber.
A method of handling a unit in a water tight hoisting chamber opening into a hull of a vessel, wherein the unit is adapted to extend into the water below the vessel when installed at its mounted position, while flange in the unit closes an opening in the vessel hull when the unit is mounted to the vessel, the method comprising steps of:
- lowering the unit into a mounted position inside the hoisting chamber on lifting devices arranged under a plate portion of the flange in the unit,
- clamping the unit in the mounted position and closing the opening in the vessel hull with co-operation of the clamping means and the lifting devices,
- at least partly removing the water from the hoisting chamber and applying fixing means thus fixing the unit in the mounted position,
- releasing the clamping of the unit.
An assembly in a marine vessel comprising:
- a water tight hoisting chamber opening into a hull of a vessel, and a unit closing an opening of the hoisting chamber in a vessel hull, wherein the unit is adapted to extend into the water below the vessel;
- a clamping means adapted to clamp the unit into a mounted position;
- and
- lifting devices arranged under a flange plate portion of the unit in co-operation with the unit and the hoisting chamber in order to apply force to the unit, and wherein the clamping means comprises a hydraulic cylinder which has a cylinder rod and the lifting devices comprises a hydraulic jack arranged at inside the hoisting chamber and around the opening in the hull, wherein the cylinder and the cylinder rod are arranged to control lifting of the unit.
Dependencies are inferred from the claim text.