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1. ABS关于近海供应船的OSV规范中，4-6-4/5.3.5（a） 第二段写道： If watertight bulkheads separate the propulsion machinery space into compartments, a direct bilge suction is to be fitted from each compartment, unless the pumps available for bilge service are distributed throughout these compartments. In such a case, at least one pump with a direct suction is to be fitted in each compartment.
这里提到推进机械处所被水密舱壁分隔成几个舱室，需每个舱室均设置一个直接舱底吸口，除非舱底泵能为这些舱室抽除舱底水。后面又提到每个舱均要设置一个直接舱底吸口。。感觉前后有些矛盾，请高手解释下。。
2. OSV规范中，4-6-4/5.3.7 第二段里提到：This accessibility is not required for multiple common-main bilge systems arranged such that any single control valve failure will not disable the bilge pumping capability from any one space.
这里的multiple common-main bilge是个什么概念?
3. OSV规范中，4-6-4/3.3.5 （a）&（b）分别是Piping where Substantial Thickness is Required和Piping where Substantial Thickness is not Required。
想请问下，这个Substantial Thickness是个什么概念？
4. OSV规范中，4-6-4/3.5.3 中提到Where the cargo space is fitted with a fixed water-spray fire extinguishing system, the drainagearrangements are to be such as to prevent the build-up of free surfaces. 这里提到的形成自由液面有点不大理解，请高手解释下。
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发表于 2013-4-6 18:44
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