Alta-class minesweeper

From Wikipedia, the free encyclopedia
  (Redirected from Alta class minesweeper)
Jump to: navigation, search
Rauma (M352), a Royal Norwegian Navy Alta class minesweeper.
Norwegian Alta-class minesweeper Rauma (M352)
Class overview
Name: Alta class
Builders: Kværner Mandal, Mandal, Norway
Operators:  Royal Norwegian Navy
In commission: 1996–present
Completed: 5
Active: 2
Lost: 1
Retired: 1
General characteristics [1]
Type: Minesweeper
Propulsion: 2 × 2.7 MW (3,621 hp) MTU 12V 396 TE84 diesel engines
2 × Kværner water jets
Speed: Over 20 knots (37 km/h; 23 mph)
Range: 1,500 mi (2,400 km)
Sensors and
processing systems:
Oropesa mechanical sweep
Kongsberg Defence & Aerospace (KDA) Agate (Air Gun and Transducer Equipment) acoustic minesweeping system
Elma magnetic sweepers
Armament: 1 × Sadral surface-to-air missile system
1 or 2 × Rheinmetall 20 mm AA guns
2 × 12.7  mm machine guns

The Alta class is a ship class of minesweepers operated by the Royal Norwegian Navy. An almost identical class of minehunters is known as the Oksøy class.

Design[edit]

The Alta class was built by Kværner Mandal during 1996 and 1997, while the related Oksøy class was built in 1994 and 1995. A total of 9 vessels were built, 5 minesweepers and 4 minehunters. The catamaran hull is built in a fibre-reinforced plastic sandwich of very low magnetic signature.[2]

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 water jet, again one in each hull, gives a low acoustic signature. A degaussing system gives the vessels extremely low electromagnetic signature.[citation needed]

Ships[edit]

Alta class[3]
Number Name Builder Commissioned Status
M350 Alta Kværner, Mandal 12 January 1996
M351 Otra 8 November 1996
M352 Rauma 2 December 1996
M353 Orkla Destroyed by fire on 19 November 2002[4]
M354 Glomma 1 July 1997

Service history[edit]

Orkla was destroyed by fire on 19 November 2002.[4] Glomma is no longer in active service.[citation needed]

References[edit]

  1. ^ "Oksoy and Alta Class Minesweepers and Minehunters - Naval Technology". naval-technology.com. Archived from the original on 17 March 2010. Retrieved 2 March 2010. 
  2. ^ "Kongsberg to Supply MINESNIPER Mk III Mine Disposal Weapon System to Royal Norwegian Navy". September 20, 2013. 
  3. ^ Stephen Saunders, ed. (2004). Jane's Fighting Ships, 2004-2005. London: Jane's Information Group. p. 517. ISBN 0710626231. 
  4. ^ a b "«Orkla» har kantret". Bergensavisen (in Norwegian). 26 January 2003. Retrieved 29 March 2015. 

External links[edit]