TRANSPORT SHIP Russian patent published in 2010 - IPC B63B35/00 

FIELD: transport.

SUBSTANCE: invention relates to river-marine ships. Ship main propulsion unit is coupled with two propeller units. Every propeller unit has streamwise carrier and nacelle with propelling screw and can turn about carrier axis. Said propeller units are arranged nearby sides on platforms. Note here that distance between them does not exceed half the propelling screw diametre. Sides have ledges jointed with side surface platforms. Two open half tunnels are arranged at acute angle to midplane. Skeg is arranged between said open half tunnels. Top sections of open half tunnels are jointed with said platforms and run to said sides. Side sections of open half sections extend skeg lateral surface to be jointed to ship bottom. Two primarily concave sections are arranged between stern frame and platforms that go narrowing towards platforms they are jointed with. Said sections are inter-jointed at stern frame to make sharpened convex section. They form arched jog with side surface, jog ends being connected with said ledges.

EFFECT: reduced resistance in stern first travel.

2 cl, 12 dwg