METHOD OF BREAKING ICE COVER Russian patent published in 2003 - IPC

FIELD: ice-breaking jobs. SUBSTANCE: submarine ship 2 excites resonance flexural gravitational waves 3 in ice 1 while she runs at resonance speed at simultaneous suction of outside water inside ship by means of water-flow passage. Water intake part of this passage is located in upper part of ship s skin at area of trough of flexural gravitational wave and outlet of passage is located in aft section of ship. Suction of water is effected by forces arising in aft section of ship due to operation of propeller 4. EFFECT: enhanced efficiency. 1 dwg