A Commander in the Navy is designated which boat flagstaff insignia?

In the Navy, the insignia for a Commander on a boat flagstaff is a star. This designation is part of the rank structure and insignia system that distinguishes various levels of command within the Navy. Each insignia has specific meanings and functions, serving to identify the rank of the officer while on board.

The star symbolizes the rank of Commander and is consistent with how ranks are represented visually in naval protocol. Other insignias, like the eagle or diamond, represent different ranks or positions, and do not correspond to the Commander's designation. Understanding the specifics of these insignias is crucial for proper recognition of authority and rank in Navy operations. Thus, the use of a star for a Commander conveys immediate recognition of their leadership position on the water.