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1. 发明专利

JPH06344977A METHOD AND APPARATUS FOR VIEWING UNDERWATER IN SHIP 失效
公开(公告)号：JPH06344977A
公开(公告)日：1994-12-20
申请号：JP16382193
申请日：1993-06-10
申请人： NIPPON YUSEN KK
发明人： FUJITA TSUNEMI
IPC分类号： B63B1/12 , B63B35/00 , B63C11/49
摘要： PURPOSE:To lift normally a viewing window above the waterline for enabling high speed navigation by providing a twin-fuselage type hull projecting side hull parts from the both sides of the bottom and the viewing windows inside the side hull parts to lower the waterline to submerge the viewing windows in viewing underwater. CONSTITUTION:A ship is adapted to function as an air cushion ship and enable high speed and long distance navigation by setting a switch mechanism 12 to the opened condition in the normal navigation to normal drive an air fan 10, increase pressure in a recess 5 and lower the water level W1 in the recess. Next, in viewing underwater, the switch mechanism 12 is opened to reversely drive the air fan 10, discharge air in the recess 5 through an intake and exhaust duct 11 to the outside, reduce pressure in the recess 5 lower than the atmospheric pressure and raise the water level W1 in the recess. Thus, the viewing windows 6 are submerged to enable the underwater view. When the water level W1 in the recess rises to a predetermined water level, the switch mechanism 12 is closed to make an enclosed space of the recess 5, stop the air fan 10 and reduce noises.

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