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发表于 2012-3-12 12:48
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来自： 中国浙江台州
If, at the same time the weather is bad, with head winds, the ship's resistance may increase compared to operating in calm weather conditions. When determining the necessary engine power, it is normal practice to add an extra power margin, the so-called sea margin, which is traditionally about 15% of the propeller design power.
MCR称为NMCR，即nominal maximum continuous rating，指某一机型所能达到的最大功率。而实际根据船的推进特性选取主机机型时，所实际采用的最大持续功率（SMCR，specified MCR），不能大于NMCR。
CSR：Continuous service rating，即常用功率点，一般为SMCR的85%，
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