Arrangement for Ice-Breaking

A device for icebreaking with a vessel, comprising:

• a vessel hull having two functionally separate elements of different widths, of which an upper and wider element is situated next to a water line for breaking unbroken ice and a lower and narrower element is configured to transport broken ice sideways and under the unbroken ice;
• wherein the upper and wider element has a substantially flat inclined front part with a front frame angle and breaks ice downward, and has a substantially flat stern part with a stern frame angle, and has between the front and stern parts a substantially flat lower portion that is situated underneath an underside of a thickest ice that the vessel is configured to break at a continuous speed and that is situated outside the width of the lower and narrower element;
• the front part, the stern part, and the lower portion of the upper and wider element are situated at a maximal width of the vessel;
• and
• the lower and narrower element has substantially vertical side portions and is wedge-shaped at the front and stern parts of the upper and wider element in a direction of travel of the vessel, the wedge shape having an opening angle and being configured to force broken ice sideways and at least partly under unbroken ice when the vessel moves forward and to force broken ice sideways along the stern part and lower portion when the vessel moves astern, thereby decreasing an amount of broken ice that contacts a main propeller of the vessel.