A.25'.2
B.29'.2
C.21'.2
D.30'.8
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最新試題
某輪順風(fēng)頂流航行,船速18kn,流速2kn,風(fēng)對(duì)船舶航速的影響為1kn,計(jì)程儀改正率+8%,0400計(jì)程儀讀數(shù)L1=100'.0,則2h后相對(duì)計(jì)程儀讀數(shù)L2為()。
某輪在狹水道內(nèi)錨泊,當(dāng)時(shí)水道內(nèi)恒流流速1kn,該輪計(jì)程儀改正率為“0”,則2h后相對(duì)計(jì)程儀讀數(shù)差為()。
某輪順風(fēng)頂流航行,船速18kn,流速2kn,風(fēng)對(duì)船舶航速的影響1kn,計(jì)程儀改正率-8%,0400計(jì)程儀讀數(shù)L1=100'.0,則2h后相對(duì)計(jì)程儀讀數(shù)L2為()。
某輪頂流航行,船速15kn,流速2kn,2h后相對(duì)計(jì)程儀讀數(shù)差為28'.0,計(jì)程儀改正率-10%,則該輪對(duì)水航程為()。
某輪順流航行,船速15kn,流速2kn,2h后相對(duì)計(jì)程儀讀數(shù)差為32'.0,計(jì)程儀改正率-10%,則該輪實(shí)際航程為()。
某船頂風(fēng)頂流航行,船速16kn,流速2kn,2h后相對(duì)計(jì)程儀讀數(shù)差為30'.0,計(jì)程儀改正率ΔL=-10%,則該船實(shí)際航程為()。
某輪順流航行,船速15kn,流速2kn,2h后相對(duì)計(jì)程儀讀數(shù)差為28'.0,計(jì)程儀改正率+10%,則該輪實(shí)際航程為()。
某輪順風(fēng)順流航行,船速18kn,流速2kn,風(fēng)對(duì)船舶航速的影響1kn,計(jì)程儀改正率-8%,0400計(jì)程儀讀數(shù)L1=100'.0,則2h后絕對(duì)計(jì)程儀讀數(shù)L2為()。
某輪船速16kn,航行2h后相對(duì)計(jì)程儀讀數(shù)差為30'.0,計(jì)程儀改正率ΔL=0%,已知該輪實(shí)際航程32nmile,則該輪航行在()中。
某輪順流航行4h,實(shí)際航程為52nmile,0800計(jì)程儀讀數(shù):L1=50'.0,計(jì)程儀改正率ΔL=-7%,船速12kn,流速1kn,則1200相對(duì)計(jì)程儀讀數(shù)L2為()。