| 摘要 |
PURPOSE:To carry-out the maintenance and inspection work for a sea chest from the inside of a hull by forming an airtight chamber through an airtight door continuously to the sea chest and installing an airtight door between the airtight chamber and a double bottom and connecting a compressed-air feeding and discharging means to the sea chest and the airtight chamber. CONSTITUTION:A sea chest 1 is formed between a ship bottom 3 and a double bottom 4, and an airtight chamber 5 is arranged contiguously through an airtight door 6. Another airtight door 7 is installed between the airtight chamber 5 and the double bottom 4, and the compressed-air feeding pipes 9 and 10 and a compressed-air discharge pipe 12 are connected to the sea chest 1 and the sirtight chamber 5. After the compressed air is introduced into the sea chest 1, the compressed-air is introduced also into the airtight chamber 5, and an operator gets into the sea chest 1 from an airtight door 6, and the maintenance and inspection work for the sea chest 1 can be carried-out from the inside of the ship.
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