Pipes to be fitted with oil or watertight bronze sounding cap or sounding deck piece where necessary on tops, and the name of the tanks to be marked on.
必要的地方，在管子顶部安装油密或水密青铜测深管头或测深甲板件，同时标注舱室名称。
Pipes to be fitted with oil or watertight bronze sounding cap or sounding deck piece where necessary on tops, and the name of the tanks to be marked on.
必要的地方，在管子顶部安装油密或水密青铜测深管头或测深甲板件，同时标注舱室名称。
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