SUBMARINE Russian patent published in 1997 - IPC

FIELD: shipbuilding; submersible craft. SUBSTANCE: submarine hull is made in form of ellipsoid. Pressure hull is formed in middle part by Ф- shaped longitudinal bulkhead and side half-shells likened to surface of hyperbolic paraboloid and connected to this bulkhead on both sides. Half-shells of each side are interconnected forming frames common for pressure and light hulls; outer ends of extreme half-shells are closed by transverse pressure bulkhead. Fore and aft extremities of hull connected to pressure bulkheads are made from multi-layer transparent material. Closed reservoirs-floats located in inter-hull space in two bow-shaped chains in common level symmetrically relative to CL are used for automatic maintenance of submarine stability. Transparent extremities provide for visual observation; Ф-shaped bulkhead and paraboloid half-shells enhance strength of hull. EFFECT: enhanced strength of submarine hull. 5 cl, 4 dwg