Typhoon class submarine weight1/23/2024 Static, cyclic and dynamic tests of titanium structures showed high qualities including blast resistance. To work with titanium hulls special shops had been built. The Severodvinsk shipyard gained experience with titanium hull welding and the production of castings and frameworks. Her test depth of 400 meters (m) (100 m more than Project 627) was provided by using titanium alloy 48-OT3B with a specific weight of 4.5 gram/cubic centimeter and a yield of 6000 kg/square centimeter.įor building the project 661 submarine a new metallurgical branch was created for production of plates and profiles from titanium and also of forging and stamping from that material. With two reactors, two turbines, and two propellers in a nuclear power plant of 80,000 hp, the submarine (surfaced displacement 5200 tons) reached a speed of 44. She had four 433 mm torpedo tubes with 12 torpedoes, and 10 Ametist 1600 mm missile tubes. The submarine was laid down in Severodvinsk in December 1963 and commissioned in December 1969. “About creation of a new high speed submarine, new types of power plants and research and development for submarines.” In accordance with that decree, works began on a new high speed nuclear submarine with anti-ship cruise missiles launched underwater and a hull from titanium alloys (Project 661-Papa). Soon after commissioning of the first Soviet attack nuclear submarine (Project 627), on August 18, 1948, the Decree of the Soviet Government was issued. Designing and building them pursued the goal of reaching technological and tactical superiority in comparison with the submarines of potential adversaries. The navies of other countries have no such submarines. Nuclear powered submarines with titanium hulls were a big achievement of the Soviet Union’s shipbuilding industry.
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