required to be watertight (必须水密) means required by the Merchant Shipping (Safety) (Passenger Ship Construction and Survey) (Ships Built On or After 1 Se...
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必须水密
Must be watertight
以上为机器翻译结果，长、整句建议使用 人工翻译 。
这路管子不应该穿过油舱（水密舱、人形通道、电缆管）的上方，必须改正以防止事故 发生。
This pipe must not pass through from above oil tanks (water-tight compartments, passageways or cables) to prevent any accidents from occurring.
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