A.at least 15 PPM B.about 15 PPM C.up to 15 PPM D.no less than 15 PPM
A.Give each crewmember a copy of ANNEX V of MARPOL B.Call an all hands meeting before sailing C.Keep placards prominently posted D.Have each person read and sign a copy of the regulations
A.bacteria B.moulds C.yeasts D.seals