HIGH-SPEED VESSEL STEP FROM POLYMER COMPOSITES Russian patent published in 2015 - IPC B63B1/18 

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly to high-speed boats made of polymer composites. This crosswise hollow step is made of polymer composite comprises outer skin and damping elements composed by at least one plate (horizontally arranged diaphragm) located inside the step between skins of the vessel and step to connect vertical lengthwise diaphragms in height decreasing to vessel fore. Note here that lengthwise diaphragms on top and bottom sides of damping elements are shifted in crosswise direction relative to each other. Lengthwise diaphragms and sidewall with skin and damping elements are glued together with the help of thrust foam plastic to be secured to the skin and damping elements and covered by one or several plies of reinforcing material. Vulcanising-on angle-pieces are welded on step sidewalls and step skin. Step cavities arranged one above the other in one or two lengthwise cross-sections of the vessel (relative to ship centreline plane) are filled with high-density foam plastic.

EFFECT: decreased shock loads, lower drag on rough sea.

3 cl, 5 dwg