SHIP'S HULL (VERSIONS) Russian patent published in 1999 - IPC

FIELD: shipbuilding; ships used for carrying liquid and loose cargo. SUBSTANCE: ship's hull includes skin, framing members, decks and bulkheads, inner plating made in form of two semicylinders mounted horizontally and interconnected together; they are also connected with cargo deck; flat walls with framing members are installed between cargo deck and main deck at angle lesser that 30 deg to level. Semicylinders are tapering in fore section. provision is made for version where flat walls connect cargo deck with forecastle deck in bow and with deck of 1st tier of superstructure in stern at angle lesser than 30 deg to level. According to another version, inner plating is made in form of one semicylinder tapering in force portion forming semiellipse on bulkhead of fore cofferdam. In this version, flat walls connect cargo deck with main deck or with forecastle deck in bow and with deck of 1st tier of superstructure in stern at angle lesser than 30 deg to level. EFFECT: increased service life and improved ecological safety. 4 cl, 6 dwg