engine crew
3.In order to resolve the problem of severe wear during operation of the M50SC main engine,the surface nitriding technics has been used to treat the surface of piston ring. It is expected to increase the life-time of engine,prolong the MTBO of cylinder liner,reduce the ceasing ratio of ship,the working intensity of crew and working cost by means of raising wear resistance and corrosion resistance.
5.The term “ship” includes the hull, materials and outfit, stores and provisions for the officers and crew, and, in the case of vessels engaged in a special trade, the ordinary fittings requisite for the trade, and also, in the case of a steamship, the machinery, boilers, and coals and engine stores, if owned by the assured.

