Joseph Shaw posted in Brotherhood of the Phin. Joseph Shaw 10:41am Sep 13 On 13 June 1923, Captain Ernest J. King, Commander, Submarine Division Three (later Fleet Admiral and Commander in Chief, U.S. Fleet, during World War II), suggested to the Secretary of the Navy (Bureau of Navigation) that a distinguishing device for qualified submariners be adopted. He submitted a pen-and-ink sketch of his own showing a shield mounted on the beam ends of a submarine, with dolphins forward of, and abaft, the conning tower. The suggestion was strongly endorsed by Commander Submarine Division Atlantic.Over the next several months the Bureau of Navigation (now known as BUPERS) solicited additional designs from several sources. Some combined a submarine with a shark motif. Others showed submarines and dolphins, and still others used a shield design. A Philadelphia firm, which had done work for the Navy in the field of United States Naval Academy class rings, was approached by the Bureau of Navigation with the request that it design a suitable badge. Two designs were submitted by the firm, but these were ultimately combined into a single design. It was a bow view of a submarine, proceeding on the surface, with bow planes rigged for diving, flanked by dolphins (not the mammal, but the Mahi-mahi, commonly known as the dolphin fish) in a horizontal position with their heads resting on the upper edge of the bow planes.Today a similar design is used: a dolphin flanking the bow and conning tower of a submarine. On 20 March 1924, the Chief of the Bureau of Navigation recommended to the Secretary of the Navy that the design be adopted. The recommendation was accepted by Theodore Roosevelt, Jr., Acting Secretary of the Navy. His acceptance is dated March 1924.Originally, the submarine insignia was to be worn by officers and men qualified in submarine duty only when attached to submarine units or submarine command organizations. The right to wear the pin was revoked if the service member transferred to a non-submarine billet. In 1941 the Uniform Regulations were modified to permit a service member to wear the submarine insignia for the duration of his career, once so authorized.