Which officer is primarily responsible for shipboard operations?

The Ship's Captain is primarily responsible for shipboard operations because they hold the highest authority on the vessel and are accountable for all actions that take place on board. This includes ensuring the safety of the crew and ship, managing operations, navigation, and overseeing all personnel. The captain makes critical decisions related to the ship's missions and resource allocations and ensures compliance with naval regulations and protocols.

In contrast, while the Executive Officer plays a significant role in aiding the captain and managing the day-to-day activities onboard, their responsibilities are more supportive and not as overarching as the captain’s. The Chief of Naval Operations is focused on overall naval strategy and does not engage directly in shipboard operations, as they operate at a higher level in the chain of command. The Master Chief Petty Officer, while a senior enlisted leader, also works under the captain and is involved in leadership and mentorship of enlisted personnel, rather than having ultimate responsibility for shipboard operations.