Icebreaker bow and hull form
AssigneeNewport News Shipbuilding and Dry Dock Company
InventorDieter W. Czimmek
Life of this patent
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Abstract
An icebreaker ship has a V-shaped bow and an S-shaped stem line with a wedge extending from the bottom of the stem line below the design waterline of the ship towards the sides until maximum width is reached. The wedge is incorporated into the hull by means of a knuckle between the top of the wedge and the hull envelope of the ship. Upon breaking of the ice by the bow, the cusps of ice move downwardly into the water along the sides of the bow until the wedge is contacted. The cusps of ice are tripped and moved away from the ship's sides and under the unbroken ice, thus protecting the propellers and leaving a clearer channel behind the icebreaker.
Claims23
An icebreaker ship for breaking sheets of ice in a sea, said ship having,
- a bow, and sides extending along the outside of the ship, a bottom and a stern,
- said bow being a V-shaped bow,
- said bow having an S-shaped stem line,
- a wedge extending from said stem line below the sides of said ship towards the stern,
- a knuckle incorporated into the hull along and between the top of said wedge and said sides,
- the form and arrangement being such that as the bow of the ship breaks through a sheet of ice, the ice broken at the bow moves downwardly into the sea along the sides into contact with the knuckle where it is tripped to move out and away from the ship sides.
Dependencies are inferred from the claim text.