What should be the first action when observing a navigation issue during watch?

When observing a navigation issue during watch, notifying the Officer of the Deck (OOD) for escalation is critical and the correct first action to take. The OOD is responsible for the safe navigation and operation of the vessel, and they are the immediate authority on the bridge. By reporting the navigation issue to the OOD, you ensure that the trained personnel can assess the situation, make decisions, and take planned actions to mitigate any risks to the vessel and crew.

The other options might seem reasonable but do not align with the proper chain of command or standard operating procedures. For example, reporting directly to the captain could lead to delays, as the captain relies on the OOD to manage daily operations and only becomes directly involved with significant issues or emergencies. Documenting the incident in the logbook is important but should happen after the immediate safety concerns have been addressed. Waiting for instructions from the Admiral would not be practical in a navigation issue that may require immediate action on the bridge. Thus, notifying the OOD is the most effective first step in ensuring navigational safety.