Alta-class minesweeper: Difference between revisions

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{{Short description|Norwegian class of minesweepers}}
{{more citations needed|date=February 2013}}
 
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|Ship type=[[Minesweeper (ship)|Minesweeper]]
|Ship tonnage=
|Ship displacement= 375 tonnes<ref>{{Cite web |url=https://forsvaret.no/en/facts/equipment/oksoy-class-and-alta-class |title=Oksøy-class and Alta-class - Forsvaret.no |access-date=2017-05-22 |archive-date=2017-07-01 |archive-url=https://web.archive.org/web/20170701010324/https://forsvaret.no/en/facts/equipment/oksoy-class-and-alta-class |url-status=dead }}</ref>
|Ship tons burthen=
|Ship length= 55.2 metres
|Ship beam= 13.6 metres
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}}
|}
The '''''Alta'' class''' is a [[ship class]] of [[minesweeper (ship)|minesweepers]] operated by the [[Royal Norwegian Navy]]. An almost identical class of [[minehunters]] is known as the {{sclass-|Oksøy|mine hunter|4}}.
 
==Design==
The ''Alta'' class was built by [[Kværner]] [[Mandal, Norway|Mandal]] during 1996 and 1997, while the related ''Oksøy'' class was built in 1994 and 1995. A total of 9nine vessels were built, 5five minesweepers and 4four minehunters. The [[catamaran]] hull is built in a [[Glass-reinforced plastic|fibre-reinforced plastic]] sandwich of very low magnetic signature.<ref>{{cite web |url=http://www.navyrecognition.com/index.php/news/defence-news/year-2013-news/september-2013-navy-world-naval-forces-maritime-industry-technology-news/1253-kongsberg-to-supply-minesniper-mk-iii-mine-disposal-weapon-system-to-royal-norwegian-navy-.html |title=Kongsberg to Supply MINESNIPER Mk III Mine Disposal Weapon System to Royal Norwegian Navy |date=September 20, 2013}}</ref>
 
Two large fans located on each side create an air cushion between the two hulls and a front and aft rubber skirt, lifting the vessel, giving small drag and a high cruise speed, as well as low susceptibility to the shock of exploding mines since only a small portion of the hull is actually exposed in the water. Propulsion by [[Pump-jet|water jet]], again one in each hull, gives a low acoustic signature. A degaussing system gives the vessels extremely low electromagnetic signature.
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! Commissioned
! Status
|rowspan=6|[[File:Knm-orkla-burning-2002-11-19.jpg|thumb|KNM ''Orkla'' burning outside [[Ålesund]], Norway in November 2002.]]
|-
|M350
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|rowspan=5|[[Kværner]], [[Mandal, Norway|Mandal]]
|12 January 1996
|Scrapped some time prior to 23 July 2022<ref>{{cite web |title=Scrapyard Ships |url=https://www.shipspotting.com/photos/gallery?category=70&imo=4907517 |website=shipspotting.com |accessdate=15 February 2023}}</ref>
|
|-
|M351
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==Service history==
''Orkla'' was destroyed by fire on 19 November 2002.<ref name=orklaloss/> ''Glomma'' is no longer in active service. Alta was scrapped along with the Oksøy class M341 Karmøy prior to 23 July 2022
 
==References==
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*[http://www.naval-technology.com/projects/oksoy/ Oksøy and Alta class]
*[https://web.archive.org/web/20140201225714/http://www.altaclass.com/ Alta class]
*[https://www.globalsecurity.org/military/world/europe/knm-oksoy.htm Alta / Oksoy Surface Effect Ship (SES)]
 
{{Royal Norwegian Navy}}
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[[Category:Mine warfare vessel classes]]
[[Category:Minesweepers of the Royal Norwegian Navy]]
[[Category:Active minesweepersMinesweepers of Norway| ]]