SSN (hull classification symbol) explained

An SSN is a nuclear-powered general-purpose attack submarine. SSN is the US Navy hull classification symbol for such vessels; the SS denotes a submarine[1] and the N denotes nuclear power. The designation SSN is used for interoperability throughout NATO under STANAG 1166,[2] though navies use other terms.

History

The first nuclear-powered attack submarine was the US Navy's, operational from 1954. This was followed by the four submarines of the entering service in 1957. The Royal Navy's first nuclear fleet submarine was which by using an American reactor entered service in 1963. The first all-British nuclear submarines were the two s.

The USN submarine fleet has been all-nuclear powered for over two decades. The bulk of the USN's SSN fleet has been the Los Angeles-class attack submarine. Designed during the Cold War the Los Angeles-class boats raison d'etre was to protect USN carrier battle groups and to hunt Soviet Navy SSBNs before they could launch a first strike against the United States.

The first ever major combat action involving an SSN was during the 1982 Falklands War. An Argentinian cruiser, was sunk by torpedoes fired by the Royal Navy fleet submarine . After that incident, the Argentinian Navy was effectively confined to port.

Since the end of the Cold War, SSNs have evolved into multi-mission submarines. Their roles include submarine-launched cruise missile platforms, intelligence gathering platforms, insertion and exfiltration of special forces teams in addition to traditional hunter-killer SSN roles.

The advantages of an SSN over a conventionally powered SSK are much longer endurance (limited more by the crew than the boat, a nuclear submarine can stay submerged for months and does not need refueling in their 25-year lifespans), and higher speed. Unlike most SSKs, SSNs do not have to surface periodically for air, which would compromise their stealth. Some of the newest conventional submarines approach these advantages: Stirling engine powered vessels can cruise underwater for up to two weeks and, like diesel/electric vessels (and in theory LOX powered vessels), are significantly quieter than nuclear submarines, since they do not need to run the powerful (and noisy) pumps associated with the cooling circuits of pressurized water reactors.

The main disadvantages of an SSN are the technological challenges and expenses of building and maintaining a nuclear power plant. Nuclear submarines can have political downsides, as some countries refuse to accept nuclear-powered vessels as a matter of policy. Furthermore, decommissioned nuclear submarines require costly dismantling and long term storage of the radioactive waste.

The following navies currently operate SSNs:

Active and future SSN classes

Royal Australian Navy
Brazilian Navy
People's Liberation Army Navy of the People's Republic of China
French Navy
Indian Navy
Russian Navy
Royal Navy of the United Kingdom(Known as "fleet submarines" in the Royal Navy.)
United States Navy

Retired SSN classes

Indian Navy
Royal Navy of the United Kingdom
Soviet / Russian Navy
United States Navy

See also

Notes and References

  1. In the Royal Navy, "SS" is an abbreviation for "Ship Submersible"Web site: Fleet Submarines (SSN) . Royal Navy website . 2008-04-07 . dead . https://web.archive.org/web/20080404154223/http://www.royal-navy.mod.uk/server/show/nav.2441 . 2008-04-04 .
  2. Web site: NATO glossary of abbreviations used in NATO documents and publications (AAP-11). NATO. 1 February 2014. dead. https://web.archive.org/web/20140201195708/https://www.fas.org/irp/doddir/other/nato2008a.pdf. 1 February 2014.
  3. News: Brazil take first step in program to join nuclear-powered sub club. Reuters. 14 December 2018.
  4. News: Brazilian Navy - Marinha do Brasil - Modernization. 7 May 2019. GlobalSecurity.org.
  5. News: Launch prediction. pt. 25 January 2022. Brazilian Navy.
  6. Web site: Type 095. www.deagel.com. 2018-07-20.
  7. Web site: Chinese fast developing advanced submarines. www.taipeitimes.com. 6 December 2006. 2018-07-20.
  8. Web site: India Russia Nuclear deal: India, Russia to ink $3 billion nuclear submarine deal this week. m-economictimes-com.cdn.ampproject.org. 2019-05-17.
  9. Web site: Navy's Only Nuclear Attack Submarine Returns To Russia Before Lease Expires. en.
  10. Web site: Russia leases out Nerpa nuclear-powered attack submarine to India. India Today. en. 2018-07-20.
  11. Web site: Archived copy . 2014-04-20 . dead . https://web.archive.org/web/20140421051234/http://www.bharat-rakshak.com/NEWS/newsrf.php?newsid=17638 . 2014-04-21 .
  12. News: Move to fast-track two submarine projects gathers steam - Times of India. The Times of India. 14 July 2014 . 2016-02-19.
  13. Web site: Government clears construction of 7 stealth frigates, 6 nuclear-powered attack submarines. timesofindia-economictimes. 2016-02-19.
  14. Web site: India Russia Nuclear deal: India, Russia to ink $3 billion nuclear submarine deal this week. m-economictimes-com.cdn.ampproject.org. 2019-05-17.
  15. Web site: Report: India, Russia Sign $3 Billion Nuclear Attack Submarine Deal. Diplomat. Franz-Stefan Gady, The. The Diplomat. en-US. 2019-05-17.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "SSN (hull classification symbol)".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.