A.MARPOL Annex Ⅲ B.MARPOL Annex Ⅵ C.MARPOL Annex Ⅴ D.MARPOL Annex Ⅳ
A.an International Ship Security Certificate B.an International Oil Pollution Certificate C.a Safety Management Certificate D.an International Ballast Water Management Certificate
A.the master and the chief engineer are unable to communicate effectively B.serious corrosion on the hull C.damaged sanitary pump D.one page missing in the oil record book