USS Irex (SS-482)

• Post-WWII Balao-class Submarine: USS Irex (SS-482) was a Balao-class submarine commissioned shortly after World War II, on 14 May 1945, representing the last generation of wartime U.S. diesel-electric submarines. • First Submarine with a Snorkel: In 1947, Irex became the first United States submarine to be fitted with a snorkel, enabling her to run diesel engines while submerged and greatly increasing underwater endurance. • Operations off Greenland: In March 1947, USS Irex operated off the coast of Greenland, testing cold-weather submarine capabilities in the frigid North Atlantic. • Involved in Rescue Operations: In 1952, Irex assisted in the rescue of the crew of the Norwegian freighter Ringstad, which had run aground in a storm off Cape Cod. • Modernization under GUPPY Program: Irex underwent the GUPPY (Greater Underwater Propulsive Power Program) modernization in 1957, receiving improved batteries, streamlined hull, and enhanced sonar and electronics. • “Operation Inland Seas” Participant: In 1959, Irex participated in Operation Inland Seas, the opening of the St. Lawrence Seaway, becoming one of the first submarines to travel from the Atlantic to the Great Lakes. • Cold War Patrols and Exercises: Throughout the 1950s and 1960s, Irex took part in numerous NATO exercises and anti-submarine warfare training missions, reflecting the tense environment of the Cold War. • Frequent Overhauls in Portsmouth: The submarine was frequently overhauled and updated at the Portsmouth Naval Shipyard in Kittery, Maine, which helped keep her technologically relevant. • Decommissioned after 26 Years: USS Irex was decommissioned on 10 September 1969, after over 24 years of service, and was struck from the Naval Vessel Register the same day. • Final Fate: After decommissioning, Irex was sold for scrap in 1971, marking the end of her unique career as a pioneer in submarine snorkel technology and Cold War operations.