Bottom construction for a ship
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United States of America Patent
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-
Oct 27, 1987
Grant Date -
N/A
app pub date -
Mar 19, 1986
filing date -
Apr 1, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a ship that is adapted for operating in ice-filled waters and has a general frame form defining a substantially horizontal bottom surface, two side surfaces, a stern and a blow portion that breaks the ice advantageously. The bottom surface comprises one or a greater number of cavities, extending to or located on both sides of the longitudinal symmetry plane of the ship, in which cavity or cavities there are arranged movable sheetlike elements. The sheetlike elements have a first position, in which said elements form a generally continuous part of the bottom surface, and a second position, in which said elements form, below the bottom surface, a substantially vertical wedge-shaped structure that converges in the direction from the stern of the hull towards the bow of the hull. The elements are provided with power units which bring about movement of the elements from one position to another by turning around a swivelling axis arranged in the longitudinal direction of the elements.
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