How long shall the operator of a vessel employed in the transferring of oil to other vessels keep the Declaration of Inspection of those transfers?

Correct Answer: Option C — 1 month from date of signature

Title 33 CFR mandates that the vessel operator or facility operator retain the signed Declaration of Inspection for at least 1 month from the date of signature. This ensures availability for Coast Guard review and verifies compliance during routine regulatory safety audits of liquid transfers.