Question 57 ONC03 - Master LT 500-1600 GRT

The Correct Answer is C **Why option C ("The person(s) in charge of the operation") is correct:** The requirements for maintaining the Oil Record Book (Part I - Machinery Space Operations) are detailed in the Pollution Prevention Regulations (33 CFR Part 151, Subpart A, specifically § 151.25(d)). This regulation mandates that every completed operation entry in the Oil Record Book must be signed by the **person or persons in charge of the operation concerned**. This ensures accountability and accuracy by placing the signing requirement on the personnel directly responsible for supervising and executing the regulated operation. **Why the other options are incorrect:** * **A) The person(s) in charge of the operation and a credentialed officer present at the operation:** While the person in charge must sign, there is no requirement for a second signature from *any* credentialed officer present at the operation. The regulation only requires the signature of the person(s) in charge of the specific operation. * **B) The master:** While the master is responsible for the overall compliance and must sign off on the entries for *each page* of the Oil Record Book (certifying that the entries are correct), they are not required to sign *each individual entry* for every designated operation. That responsibility belongs to the person(s) in charge of the operation. * **D) Any credentialed officer present at the operation designated by the master:** The requirement is specific to the person(s) who were actually in charge of the operation, regardless of whether the master designated them specifically for the signing task. The regulation ties the signing duty directly to the operational responsibility.