Under the regulations implementing MARPOL, a mobile offshore drilling unit is required to have an International Oil Pollution Prevention (IOPP) certificate when the unit ().
A:is drilling on the Outer Continental Shelf
B:moves to a new drilling location in U-Swaters
C:engages in a voyage to a port of another country which is a party of MARPOL
D:All of the above
出自:海船船员证