Clean the bilge well (channel) to ensure smoothly.
清洁污水沟(井)，保证畅通。
The drain pipes to be installed from the boiler flat and hot water well flat to bilge well for leading the waste oil water.
排放阀应装在从锅炉底和热水井底到污水井用于导废油废水。
Reinforce to patrol vessel and measure the liquid tank and bilge water well frequently.
加强全船巡视检查，勤测各液体舱及污水沟等。
Reinforce to patrol vessel and measure the liquid tank and bilge water well frequently.
加强全船巡视检查，勤测各液体舱及污水沟等。
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