Navigation in ice covered waterways

Details Navigation in ice covered waterways Navigation in ice covered waterways

B - Operations, Transporting

63

B

114/11

B63B 35/08 (2006.01)

Patent

CA 1153633

ABSTRACT OF THE DISCLOSURE A navigation channel is made in the ice covering the surface of a waterway by propelling a vessel so that its bow breaks the ice to form a channel having a width of the beam of the ship and an auxiliary channel is similarly formed at each side of the ship in rear of its bow to provide leeway for the ship to turn. As the ship is turned, the auxiliary channel is enlarged by breaking the ice on the edge of the auxiliary channel toward the stern of the ship to give it greater leeway to turn. The auxiliary channel may be broken out by fin means projecting from the side of the ship effective to exert forward, upward and outward force against the ice blanket to break pieces from it.

341572

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