TOW ICEBREAKER TO MAKE WATERWAY FOR COLLECTION OF OIL SPILL Russian patent published in 2015 - IPC B63B35/08 B63B1/10 

FIELD: transport.

SUBSTANCE: claimed icebreaker comprises the hull composed by two icebreaking hulls and central auxiliary icebreaking hulls coupled therewith by the frame. Coupling between lateral icebreaking hulls allots their crosswise displacement relative to central auxiliary hull. To icebreaker is provided with ice pull-off wedge with its nose secured to said central auxiliary hull. Note here that it is secured to lateral icebreaking hulls via it generators articulated with said hulls to vary the wedge spot width. Wedge body has opening arranged along its generators at water surface level for passage of crushed ice and oil spills.

EFFECT: higher efficiency of ice breaking.

3 cl, 1 dwg