As a management level engineering officer planning for underway operations onboard a tanker, you must maintain manning in the engineering spaces while underway in accordance with the certificate of inspection (COI) and the navigation safety regulations for underway tankers as set forth in 33 CFR. Which of the following statements is true?

Correct Answer: Option D — The engineering watch must be physically present in the machinery spaces or in the main control space and must consist of at least one appropriately endorsed licensed or credentialed officer.

Underway tankers must maintain an engineering watch physically present in machinery spaces or the main control room, consisting of at least one credentialed officer holding the appropriate license endorsement per 33 CFR and COI mandates.