TOURIST SUBMARINE HULL

摘要

FIELD: shipbuilding; tourist submarines. SUBSTANCE: hull of tourist submarine includes plating, framing and rows of portlights on each side; besides that row of upper portlights is provided on each side; longitudinal stringers with longitudinal wall are mounted over edges of these portlights; space between them is used as ballast tank. EFFECT: improved observation of underwater situation at retained strength characteristics. 3 dwge