You are the Chief Mate of a 30,000-DWT tankship. The vessel is engaged in trade with another country signatory to MARPOL 73/78. Which statement is TRUE?

Correct Answer: Option B — The IOPP Certificate for an inspected vessel is valid for 5 years.

Under MARPOL Annex I and 33 CFR 151.19, the International Oil Pollution Prevention (IOPP) Certificate is issued for a period not to exceed five years. It remains valid subject to mandatory annual, intermediate, and renewal surveys.