SHIP HULL Russian patent published in 2017 - IPC B63B1/38 B63B1/00 

FIELD: transportation.

SUBSTANCE: ship hull, which has underwater hull and underwater hull with curved sides below the structural waterline, converging to the nose is proposed. The underwater hull has a bottom with a longitudinal tunnel made with an upper horseshoe arch and vertical walls extending along the entire ship hullbelow the structural waterline and with generators parallel to the ship's DP. Underwater hull cross-section profile along design waterline features maximum width at aft area. On the vertical walls of the longitudinal tunnel, at least one longitudinal step is installed symmetrically to the ship's DP, each of which is made hollow, and slot-like holes are made along the thereof entire length. There is mean in the vessel hull for supplying air or gas to each step.

EFFECT: improved vessel performance due to reduced frictional drag during vessel movement.

3 dwg