Method and arrangement on a vessel

Details Method and arrangement on a vessel Method and arrangement on a vessel

B - Operations, Transporting

63

H

115/22, 114/23

B63H 21/21 (2006.01) B63H 1/28 (2006.01) B63H 21/12 (2006.01)

Patent

CA 1293158

(57) Abstract of the Disclosure Method and arrangement for the reduction of the resistance to rotation of the propeller (3) of a ship (1) going in ice when the ice increases the resis- tance to rotation of the propeller to a level higher than when sailing in open water. When the resistance to ro- tation increases, gas is passed to the propeller (3),and the supply of gas is adjusted when the resistance to ro- tation is changed. The supply of gas may be continual, but as a rule it is used only for short periods in order to correct the speed of rotation of the propeller to the appropriate level.

520768

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