About this Unit
USS Seahorse (SS-304) was a Balao-class submarine commissioned by the United States Navy in March 1943. During World War II, Seahorse completed eight war patrols in the Pacific Theater, earning a formidable reputation for aggressive and effective attacks on Japanese shipping. Under the command of notable skippers, including Slade Cutter, Seahorse was credited with sinking over 71,000 tons of enemy vessels, making her one of the most successful submarines of the war. For her distinguished service, USS Seahorse received nine battle stars before being decommissioned in 1946.
Historical Facts
•
Commissioning and Class: USS Seahorse (SS-304) was a Balao-class submarine commissioned on 31 March 1943, becoming one of the most successful American submarines of World War II.
•
Origin of Name: The submarine was named after the seahorse, a marine creature, continuing the U.S. Navy tradition of naming submarines after sea animals.
•
War Patrols: USS Seahorse completed eight war patrols in the Pacific Theater, earning a reputation for aggressiveness and skill in anti-shipping operations.
•
Ton of Enemy Shipping Sunk: The submarine was credited with sinking over 71,000 tons of Japanese shipping, making her one of the top-scoring U.S. submarines of the war.
•
Famous Skipper: Commander Slade Cutter, one of the Navy's top submarine aces, commanded Seahorse during several of her most successful patrols.
•
Surviving a Depth Charge Barrage: During her fourth war patrol, Seahorse survived a massive depth charge attack by Japanese escorts after sinking multiple ships in a convoy.
•
Rescue Operations: In addition to offensive operations, Seahorse rescued several downed American aviators during her patrols, saving lives behind enemy lines.
•
Presidential Unit Citation: The submarine received the Presidential Unit Citation for extraordinary heroism in action against enemy Japanese forces.
•
Postwar Fate: After World War II, Seahorse was placed in reserve and eventually struck from the Naval Vessel Register in 1960, then sold for scrap.
•
Legacy: USS Seahorse’s legacy lives on in naval history as an example of U.S. submarine prowess, and her battle flag is preserved at the Submarine Force Library and Museum in Connecticut.