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Permit class USS Plunger on the building ways at Mare Island. HY-80 is a high-tensile, high yield strength, low alloy steel.It was developed for use in naval applications, specifically the development of pressure hulls for the US nuclear submarine program and is still currently used in many naval applications.
The hull of the Albacore utilized HY-80 high-strength steel [3] with a yield strength of 80,000 psi (550 MPa), although this was not initially used to increase the diving depth relative to other US submarines. HY-80 remained the standard submarine steel through the Los Angeles class. [15] Other components were made from high-tensile steel (HTS ...
Incidental submarine encounters with merchant ships were performed by signalling ships to stop, then sinking them after evacuation of the crew, in accordance with international law. After unrestricted submarine warfare began in February 1915, any ship could be sunk unexpectedly from the heavy underwater hull damage inflicted by torpedoes.
USS San Francisco in a dry dock, after hitting an underwater mountain 350 miles (560 km) south of Guam in 2005 This article describes major accidents and incidents involving submarines and submersibles since 2000. 2000s 2000 Kursk explosion Main article: Kursk submarine disaster In August 2000, the Russian Oscar II-class submarine Kursk sank in the Barents Sea when a leak of high-test peroxide ...
The first submarine commissioned in the class was the ill-fated Thresher, and so the class was known by her name. When Thresher was lost on 10 April 1963, the class took the name of the second ship in the class, Permit. Thresher had numerous advanced design features and embodied the future of US Navy submarine design, and her loss was a serious ...
The Kairyu (海龍, Kairyū, "Sea Dragon") was a Small, 2-man, midget submarine of the Imperial Japanese Navy of 20 ton that was based on the Type A midget submarine that was used in the 1941 attack on Pearl Harbor. [12] All five of the Type A midget submarines used were captured (1) or destroyed (4).
After World War II, the Bureau of Ships conducted a research program for developing a high strength steel for ship and submarine construction. During testing, a variant of STS with modifications in carbon and nickel content and the addition of molybdenum, known as "Low-carbon STS", showed the best combination of all the desirable properties.
Also like Albacore, the Skipjacks used HY-80 high-strength steel, with a yield strength of 80,000 psi (550 MPa), although this was not initially used to increase the diving depth relative to other US submarines. HY-80 remained the standard submarine steel through the Los Angeles class. [5] Control room of Skipjack class; the bow is at the top.