The USS Grayback (SS-208) was a Tambor-class submarine built by the Electric Boat Company in Groton, Connecticut. Her keel was laid before being launched on 31 January 1940, and she was commissioned on 30 June 1941 under the command of Lieutenant Willard A. Saunders. Grayback was a significant vessel in the U.S. Navy during World War II, ranking 20th among all U.S. submarines in total tonnage sunk, with 63,835 tons, and 24th in the number of ships sunk, with 14. Constructed as a Tambor-class submarine, Grayback was designed for patrol and combat in wartime conditions. After her initial shakedown cruise in Long Island Sound, she conducted patrols in the Caribbean and Chesapeake Bay before heading to Pearl Harbor in February 1942. Her first war patrol took her along Saipan and Guam, where she engaged enemy vessels and notably sank her first ship, Ishikari Maru, off Bonin Islands in March 1942. Grayback's combat record includes damaging several Japanese ships, sinking I-18, and participating in wolfpack tactics in the China Sea. Throughout her service, Grayback undertook ten war patrols, during which she demonstrated resilience and tactical effectiveness despite hazards like enemy patrols, shallow waters, and technical failures. Her crew performed notable actions, including rescuing downed aviators and engaging enemy convoys with torpedoes and deck guns. Commanders Edward C. Stephan and John Anderson Moore received multiple awards, including the Navy Cross. Grayback's last patrol began in January 1944, during which she sank two cargo ships and heavily damaged others before being lost near Okinawa. Japanese records indicate she was sunk by a bomb from aircraft based on the carrier Zuikaku after attacking a convoy. Her wreck was discovered in June 2019, lying upright in 1,400 feet of water, with significant damage consistent with a direct bomb hit. The vessel’s discovery was confirmed by the U.S. Navy, and her crew is honored for their service, making Grayback a notable symbol of American submarine warfare in the Pacific theater.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.