A.the tank ceiling B.the tank top bushing C.the thievage mark D.an above deck datum
A.the base of the expansion trunk B.the base of the ullage port C.a line scribed within the ullage port D.an above-deck datum,usually the top of the ullage hole
A.hold a valid officer's license for inspected vessels B.be a certificated tankerman C.be 30 years old D.have a letter from the company stating his qualification