| 摘要 |
The invention concerns a device for icebreaking with icebreaking hull of vessel. According to the invention, there are utilized two functionally separate elements (I, II) of different width (B; D), one upper and wider element (I) of which is situated next to the water line (13) for breaking of unbroken ice (14), while a more slender element (II) situated below the same is intended for the transport of the broken ice (15) sideways and under the unbroken ice (14). The upper wider element (I), which is provided with an essentially flat lower part portion (11) abaft an inclining front part (10), is arranged to at a small frame angle (a), preferably less than 15°, break the ice (14) downwards when moving ahead. An essentially flat stern part (12), which has a small frame angle (c), preferably less than 20°, is arranged to break the ice (14) downwards when moving astern.The lower and more slender element (II) has essentially vertical side portions (7,8,9) which in the forebody and the afterbody have been provided with marked wedge-shape which sideways shove the broken ice (15) the transport of which sideways and astern is augmented by bow propellers (17) and wing propellers (18). |
