Ullages are measured from().
A、the tank ceiling
B、the tank top bushing
C、the thievage mark
D、an above deck datum
A、the tank ceiling
B、the tank top bushing
C、the thievage mark
D、an above deck datum
A、an above-deck datum such as the top of the ullage pipe B、the tank ceiling aboard transversely framed vessels C、the tank top D、a thievage mark below the edge of the deck
A、precaution measures B、safety measures C、security measures D、emergency response measures