ICE BREAKING ADAPTER PUSHED BY PUSHER TUG TO MAKING OF NAVIGABLE WATERWAYS IN ICES Russian patent published in 2015 - IPC B63B35/08 E02B15/02 

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly to ice breaking facilities operated in combination with tug. Propose ice breaking adapter pushed by pusher tug is intended for making of navigable waterways in ices. Adapter hulls are composed of front and two lateral rigidly interconnected frame structure for tight contact with pusher tug. Said hulls feature a broken flat stern in shape approximating to triangle at waterline level. Lateral hulls feature equal width and are shifted downward from the main hull so that the line extending through their stems level with the waterline is spaced from the parallel line extending level with waterline through main hull stem-post at least 0.1 of the main hull width in its midship. Said lateral hulls are located on both sides from the main hull so that their midship planes are spaced from ice breaker midship plane by distance I defined by the formula: m, where B_f and B_l are widths of the front and lateral hulls in midship plane. Device for tight contact of said adapter with pusher tug is arranged at frame structure to extend by magnitude b making at least 3 m beyond the line passing through lateral hull stem-posts.

EFFECT: higher safety of navigation in ice.

1 dwg