Command at Sea insignia

The Command at Sea insignia is a badge of the United States' seagoing services worn by officers on their uniforms to denote that they are the commander, or formerly a commander, of a warship. If the wearer is currently the commander of a warship, it is worn above the nametag, which is worn a quarter of an inch above the right chest pocket on a uniform shirt. Afterwards, the pin is moved to the left side of the shirt or jacket. Commanders of land-based installations wear a different but similar badge, known as the Command Ashore insignia, instead.