Stern apron for ice breakers

Details Stern apron for ice breakers Stern apron for ice breakers

1986-06-26

1988-03-22

Peters, Jr., Joseph F.

Ships

Ice breakers

Rams

114 40, 114 56, 114 57, 440 71, B63B 3508

Patent

active

047321016

ABSTRACT:
The stern apron is constructed as a volume body tapering to a sharp end in streamlined manner towards the stern of the ship and which at its lower outer edges is in each case wider than in the overlying region, so that the ship's resistance and the necessary propulsive power when travelling in open water is reduced and, particularly when moving astern, the propulsion and control members are protected against contact with the ice.

REFERENCES:
patent: 2127475 (1938-08-01), Yourkevitch
patent: 2953113 (1960-09-01), Baer
patent: 3521590 (1970-07-01), German et al.
patent: 3635186 (1972-01-01), German
patent: 3850125 (1974-11-01), Anders
patent: 3991696 (1976-11-01), Aoki
patent: 4428735 (1984-01-01), Gruzling et al.
patent: 4506617 (1985-03-01), Waas et al.

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