SHIP HULL Russian patent published in 2017 - IPC B63B43/02 B63B3/04 

FIELD: transportation.

SUBSTANCE: ship hull is designed in a form of an impermeable membrane, formed of the outer skin and the set of beams. Impermeable membrane is made in a form of two separate impermeable nose and stern parts connected by a nondetachable connection located on the housing nose side of a middle section. Nondetachable connection durability is selected such that it provides parts connection before achieving the bending moment M₀ affecting the nondetachable connection, of the limit value linked to the critical value of the hydrodynamic force P_cr which corresponds to the maximum permissible drop of a metacentric height for the vessel, by the following relation: where M₀ is the limit value of the bending moment affecting the nondetachable connection, Hm⋅; P_cr is the critical value of the hydrodynamic force, N; L_N is the length of the nose impermeable part, m; ℓ is the distance from the prow to the point of the hydrodynamic forces resultant application while capturing of the prow by wave, m; C_r is the reserve coefficient.

EFFECT: higher safety of navigation.

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