PURPOSE: To prevent the sinking and overturning of a hull by discharging in a short time in the sea water, etc., collected in the hull in emergency (flood due to grounding, etc.).
CONSTITUTION: A water suction pipe 33 and discharge pipe 34 are connected to a cooling water pump 32, and a water suction port 36a formed at one end of the second water suction pipe 36 is opened on a ship bottom 30a, and the other end is communicated with the water suction pipe 33 through a selector valve 37. The sea water, etc., collected on the ship bottom 30a can be discharged in a short time in an emergency by the cooling water pump 32 which is originally installed in a hull, by controlling the valve opening degree of the selector valve 37 according to the water level of the sea water, etc., collected on the ship bottom 30a, which is detected by a water level sensor 38, and the sinking and overturning of the hull can be prevented.
OTANI SEIICHI
FURUYA JUNICHI
NANBA TOSHIO
OSAKI MASANOBU
