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ABS规范4-6-4/11.3.7(a)iii) A level gauge complying with 4-6-4/11.5.1 is fitted for fuel oil service tanks and settlingtanks. However, short sounding pipes may be used for tanks other than double bottom tanks without the additional closed level gauge, provided an overflow system is fitted. See 4-6-4/13.5.4. The oil level gauge may also be omitted for vessels less than 500 gross tons.
这段话,到底是说什么意思?特别是红色字体部分:
1. 所谓的closed level gauge是什么东西?为什么多个Closed?
2. 这里的tanks 是指的上述的燃油日用舱和沉淀舱吗?还是针对所有的燃油舱?
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