Without air conditioning, temperature and humidity in the submarine rose, reaching 60 ☌ (140 ☏) after about 10 hours. As most of the battery power was needed to keep vital systems operating and to restart the reactor, lighting and air conditioning were shut down. Several hours later, the backup generator broke down and the electrical load was transferred to the ship's battery. Since no shore power connection was available in San Juan, the ship's backup diesel generator was used to carry the "hotel" electrical loads. Following customary procedure while in port, her reactor was shut down. On 18 October 1961, Thresher, in company with the diesel-electric submarine Cavalla, headed south on a three-week test and training cruise to San Juan, Puerto Rico, arriving 2 November. She took part in Nuclear Submarine Exercise (NUSUBEX) 3–61 off the northeastern coast of the United States from 18–24 September 1961. These tests allowed a thorough evaluation of her many new and complex technological features and weapons. Thresher conducted lengthy sea trials in the western Atlantic and Caribbean Sea areas in 1961–1962. Warder), and was commissioned on 3 August 1961, Commander Dean L. Warder (wife of World War II skipper Frederick B. She was launched bow first on 9 July 1960, was sponsored by Mary B. The contract to build Thresher was awarded to Portsmouth Naval Shipyard on 15 January 1958, and her keel was laid on. Early career Thresher at sea on 24 July 1961 Having been lost at sea, Thresher was not decommissioned by the U.S. When Thresher was struck from the Naval Vessel Register on 16 April 1963, the class name was changed to that of the second boat, Permit. This was the first time since World War II that we had considered our design sufficiently advanced to embark upon construction of a large class of general-purpose attack submarines." įollowing Navy tradition, this class of subs was originally named Thresher after the lead boat. Naval Institute's monthly journal Proceedings that "the Navy had depended upon this performance to the extent that it had asked for and received authority to build 14 of these ships, as well as an additional 11 submarines with very much the same characteristics. Shortly after her loss, the Commander of Submarine Force Atlantic wrote in the March 1964 issue of the U.S. Navy's newest anti-submarine missile, the SUBROC, as well as passive and active sonar that could detect vessels at unprecedented range. ![]() She also had the most advanced weapons system, including launchers for the U.S. Significance of design and loss Launch of USS ThresherĬreated to find and destroy Soviet submarines, Thresher was the fastest and quietest submarine of its day, matching the smaller, contemporary Skipjack class. ![]() The first nuclear submarine lost at sea, Thresher was also the third of four submarines lost with more than 100 people aboard, the others being the French Surcouf, sinking with 130 personnel in 1942, USS Argonaut, lost with 102 aboard in 1943, and Russian Kursk, which sank with 118 aboard in 2000. Navy, leading to the implementation of a rigorous submarine safety program known as SUBSAFE. On 10 April 1963, Thresher sank during deep-diving tests about 350 km (220 mi) east of Cape Cod, Massachusetts, killing all 129 crew and shipyard personnel aboard. Navy's second submarine to be named after the thresher shark. USS Thresher (SSN-593) was the lead boat of her class of nuclear-powered attack submarines in the United States Navy. Lost with all hands during deep diving tests, 10 April 1963 129 died.ģ,540 short tons (3,210 t) light, 3,770 short tons (3,420 t) submergedġ Westinghouse S5W PWR, Westinghouse Geared Turbines 15,000 shp (11 MW)Ĥ × 21 in (530 mm) torpedo tubes amidships USS Thresher (SSN-593) under way, 30 April 1961
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