SPOON-SHAPED AFT END OF TRANSOM TYPE FOR SINGLE-HULL SURFACE DISPLACEMENT HIGH-SPEED VESSEL Russian patent published in 2019 - IPC B63B1/08 

FIELD: shipbuilding.

SUBSTANCE: invention relates to the field of shipbuilding and concerns the design of the aft end of single-hull displacement high-speed vessels. Aft end of transom type is formed in such a way that the lower edge of the transom is made in the form of a double arch with a minimum in the centerline plane, two symmetrical minima at the sides and two symmetrical maxima at a distance of 0.25–0.6 of CWL width at the transom. Cross-section of the vessel along the buttocks is a curved line, the angle of inclination of which relative to the baseline smoothly decreases, starting with ~16 station sections and reaching ~0.5° station sections in the transom area; distortion of the sectional shape at the buttocks due to the introduction of a double arch is provided at a length of 3.5 station spacings. Bottom in the aft end has a rise in buttocks, ensuring the placement of the propeller-steering complex above the baseline, while the angle of inclination of the buttock in the plane of the axis of the propeller shaft in the area of the propeller is not more than 4°, that provides a continuous aft end flow and acceptable characteristics of the interaction of propellers with the hull.

EFFECT: technical result is to reduce aft slamming, improve stability on the course, as well as improve the cavitation characteristics of the propellers.

1 cl, 1 dwg