Korean War Submarines Used: Roles and Operations in Korea
Although submarines were not a dominant weapon in the Korean War, they performed valuable patrol, reconnaissance, transport, and rescue missions. Understanding the Korean War submarines used by the United States and its allies reveals a quiet dimension of the conflict.
Operating beneath contested waters, these vessels gathered intelligence, supported covert missions, and rescued downed airmen, while their presence constrained enemy movement. Their story illustrates how undersea forces contributed to a war dominated by land and air combat.
During the Korean War, submarines were used mainly for reconnaissance, intelligence collection, coastal surveillance, and special operations rather than large-scale attacks. Their ability to operate discreetly made them valuable around Korea’s heavily defended coastline.
The United States Navy deployed primarily World War II-era fleet submarines, including Gato-, Balao-, and Tench-class boats. These vessels monitored maritime activity, gathered information about coastal defenses, and supported military planning.
Some submarines also transported or recovered reconnaissance personnel and supported clandestine missions. Their activities were often classified, so complete operational details remain unavailable in public records.
British Commonwealth naval forces also contributed submarine capabilities, although the Korean War submarines used were not central to the conflict’s surface battles. North Korea had no significant submarine force during the war, while Soviet submarine involvement has not been reliably documented as direct combat participation.