Vessel or floating structure operating in ice-covered waters and method of using it

摘要

The invention relates to a vessel or a floating structure operating in ice-covered waters comprising a hull or the like (1, 1′) including at least one bow-like end or a similar hull portion (2, 2′), which is exposed to the loading effect of the ice, while the ice or the vessel is moving. Said bow-like end or a similar hull portion (2, 2′), in the underwater part of the hull, is equipped with means for leading one or several strong, mainly upwards-directed flows of water towards the ice or the ice field encountered by the bow-like end or a similar hull portion (2, 2′). The invention also relates to a method of using the vessel or the floating structure.

主权项

1. A vessel or a floating structure operating in ice-covered waters, comprising:
a hull with a bottom and with a waterline including at least one bow structure, which is exposed to a loading effect of ice while the ice or the vessel or floating structure is moving in the ice or an ice field, wherein said bow structure, in an underwater part of the hull, is provided with at least one flow channel, the at least one flow channel being vertically or obliquely located with respect to the waterline and arranged to be directed towards the ice or the ice field in front of the vessel or floating structure, the bow structure comprising a forwardly protruding portion, the at least one flow channel having a first end disposed on an underside of the forwardly protruding portion and a second end on a top surface of the forwardly protruding portion, the at least one flow channel extending vertically or obliquely through the forwardly protruding portion and the at least one flow channel being oriented forwardly through the forwardly protruding portion, and wherein the at least one flow channel is provided with a pump or a propeller for leading from underneath the bottom of the vessel or the floating structure upwards-directed flows of water through said bow structure towards the ice or the ice field in front of and encountered by the bow structure.