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  1. More Images

    Alfa-class submarine

    Nuclear-powered attack submarine class

    The Alfa class, Soviet designation Project 705 Lira, was a class of nuclear-powered attack submarines in service with the Soviet Navy from 1971 into the early 1990s, with one serving in the Russian Navy until 1996. They were among the fastest military submarines ever built, with only the prototype submarine K-222 exceeding them in submerged speed. The Project 705 submarines had a unique design among other submarines. In addition to the revolutionary use of titanium for its hull, it used a powerful lead-bismuth liquid metal cooled reactor as a power source, which greatly reduced the size of the reactor compared to conventional designs, thus reducing the overall size of the submarine, and allowing for very high speeds. However, it also meant that the reactor had a short lifetime and had to be kept warm when it was not being used. As a result, the submarines were used as interceptors, mostly kept in port ready for a high-speed dash into the North Atlantic. Wikipedia

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  2. en.wikipedia.org

    The Alfa class, Soviet designation Project 705 Lira (Russian: Лира, meaning "Lyre", NATO reporting name Alfa), was a class of nuclear-powered attack submarines in service with the Soviet Navy from 1971 into the early 1990s, with one serving in the Russian Navy until 1996. They were among the fastest military submarines ever built, with only the prototype submarine K-222 (NATO reporting ...
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  4. scienceinfo.net

    The submarine attacking Lyra class or Russia's Project 705 Alfa still holds the title of the world's fastest submarine at a speed of 76km / h. According to the People's Police, the Soviet legend Lyra 705 (NATO called Alfa) was a type of nuclear-powered submarine that operated during 1971 - 1997. Design work was carried out by the Department ...
  5. naval-encyclopedia.com

    Dec 24, 2024The "Alfa" class attack submarines (project 705 Lira) constitute a completely new concept of underwater "interceptor" intended to gain a significant advantage over NATO forces in matter speed and depth, an idea emerging back in 1957 to both catch up 30 knots CBGs and escape their escort. The November class were initially supposed to ...
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  7. 19fortyfive.com

    Jan 13, 2025Key Points and Summary: Russia's Alfa-Class submarines (Project 705 Lira) exemplified the Soviet Union's push to achieve an undersea technological edge, featuring unprecedented materials like titanium hulls for higher speeds and deeper dives.-Debuting in the early 1970s, these nuclear-powered attack subs could hit 40 knots and descend to 350 meters, surpassing most NATO counterparts in raw ...
  8. ru.wikipedia.org

    Головная подводная лодка проекта 705, К-64, была спущена на воду в 1969 году, в конце 1971 года после интенсивных испытаний вошла в строй и включена в состав 3-й дивизии подводных лодок, однако уже к середине 1972 года на ...
  9. en.wikipedia.org

    The Project 705 "Lira" (Russian: Лира, lit. 'lyre', NATO: Alfa) had a double hull made out of titanium alloy and consisted of six compartments, along with an escape chamber for the crew, [1] with a displacement of 2,300 tonnes (2,300 long tons) on the surface and 3,180 tonnes (3,130 long tons) while underwater. [2] The submarine had a length of 81.4 metres (267 ft 1 in), a beam of 9.5 ...
  10. military-history.fandom.com

    The Soviet Union/Russian Navy Project 705 (Лира/Lira, "Lyre") was a class of hunter/killer nuclear-powered submarines. The class is also known by the NATO reporting name of Alfa. They were the fastest class of military submarines built, with only the prototype K-222 (NATO Papa class) exceeding them in submerged speed. The Lira was a unique design among submarines. In addition to the ...
  11. nationalinterest.org

    Aug 20, 2024In 1971, the Soviets unveiled their Project 705 Lira submarine (NATO reporting name Alfa). Project 705 was a nuclear-powered attack submarine notable for two things: the use of a titanium hull ...
  12. The Alfa submarines had an operation endurance of one month. Individual Submarines K-377, (K-47), factory no. 900. (Commanding Officer: A.S. Pushkin) This submarine suffered a reactor accident in 1972 during sea trials. The metal coolant "froze" and it was therefore impossible to remove the reactor fuel.

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