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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 Soviet submarine K-129 carried nuclear ballistic missiles when it was lost with all hands, but as it was a diesel-electric submarine, it is not included in the list. (K-129 was partly recovered by the U.S. Project Azorian.) The two USN submarines belonged to Submarine Force Atlantic, in the U.S. Atlantic Fleet.
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 ...
During World War II, the U.S. Navy's submarine service suffered one of the highest casualty percentage of all the American armed forces, losing one in five submariners. [3] Some 16,000 submariners served during the war, of whom 375 officers and 3,131 enlisted men were killed, resulting in a total fatality rate of around 22%. [4]
The Seawolf class cost about $3 billion per unit ($3.5 billion for USS Jimmy Carter), making it the most expensive United States Navy fast attack submarine and second most expensive submarine ever, after the French Triomphant-class nuclear-powered ballistic missile submarines.
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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.
The yellow drone marked "HY-119" was found floating at sea before being turned over to authorities, regional police director Andre Dizon told AFP. It was about six feet long, and torpedo-shaped ...