请教航速的感念：AT NCR WITH 15% S.M

shipdd · 发表于 2009-11-24 10:06

本帖最后由 mutou 于 2009-11-24 22:13 编辑

请业内人士指点，先谢谢了

SERVICE SPEED ON SCANTLING DRAFT AT NCR WITH 15% S.M： 25.0KTS
是什么意思，
另：NCR，S.M 是什么的简称？

flame528101 · 发表于 2009-11-24 12:29

90%mcr=ncr

RP2 · 发表于 2009-11-24 22:07

本帖最后由 RP2 于 2009-11-24 22:15 编辑

NCR_ Nominal continuous rating_ Cont. power for all time long;
MCR_ Maximum continuous rating_ Max. power for short period;
SM_ Sea Margin - similar to operating allowance : increase to allow for seas and wind, typically 5-30% depending on operating location;

You may find a lot of such questions and answers in the bbs. Just search.

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