Submarine Warfare insignia

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The Submarine Warfare Insignia (usually known as '"Dolphins"') are worn by qualified submariners.

United States Navy Officers and Enlisted Sailors wear a ^[1] uniform breast pin to indicate that they are qualified in submarines.

The Submarine Warfare Insignia is considered one of the Navy's three major enlisted warfare pins^{[citation needed]}, along with the Surface Warfare Badge and the Enlisted Aviation Warfare Specialist insignia. To earn the right to wear "fish" or "dolphins", prospective submariners complete an extensive qualification process that lasts about one year (for both enlisted and officers, though the two programs differ significantly) and covers all of the submarine's systems.