Device and method for lifting an object from a deck of a vessel subject to movements
AssigneeGeoSea N.V.
InventorsJeroen Van Loon, Dieter Wim Jan Rabaut
Life of this patent
Estimating the term…
Abstract
Described is a device for lifting an object from a deck of a vessel subject to movements in a heave direction. The device comprises a support surface for the object provided at a first height in the heave direction relative to the deck. A lifting crane is configured to take up the object from the support surface at a lifting point thereof at a lifting speed. An actuator system is configured to lower the support surface relative to the deck at the instant in time at which the object is lifted from the surface to a second height in the heave direction at a lowering speed. A method using the device is also described.
Claims23
Device for lifting an object from a deck of a vessel subject to movements in a heave direction, the device comprising:
- a support surface for the object provided at a first height in the heave direction relative to the deck;
- a lifting crane configured to take up the object from the support surface at a lifting point thereof at a lifting speed;
- and
- an actuator system configured to lower the support surface relative to the deck at the instant in time the object is lifted from the surface to a second height in the heave direction at a lowering speed, wherein the actuator system comprises distance-varying means provided between the support surface and a base surface, and configured to vary the distance in the heave direction between the support surface and the base surface,
- wherein the base surface is provided by a base platform structure configured to be moved across the deck of the vessel in at least one of the surge and sway directions, and wherein the deck supports a plurality of support surfaces and the base platform structure is configured to be moved across the deck of the vessel to a position underneath each support surface.
Dependencies are inferred from the claim text.