NAVYPEDIA

Photo

Otra 2014  

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Oksøy	M340		Kværner, Mandal		1994	15.8.1994	wrecked 2.2005, CTL, stricken 4.2009
Karmøy	M341		Kværner, Mandal		1994	9.1.1995	in service (2019)
Måløy	M342		Kværner, Mandal		1995	24.3.1995	in service (2019)
Hinnoy	M343		Kværner, Mandal		1995	8.9.1995	in service (2019)
Alta	M350		Kværner, Mandal		1995	12.1.1996	in service (2019)
Otra	M351		Kværner, Mandal		1995	8.11.1996	in service (2019)
Rauma	M352		Kværner, Mandal		1996	2.12.1996	in service (2019)
Orkla	M353		Kværner, Mandal		1996	4.4.1997	fire 19.11.2002
Glomma	M354		Kværner, Mandal		1997	1.7.1997	stricken 4.2009

Technical data

Displacement standard, t	343
Displacement full, t	375
Length, m	52.0 pp 55.2 oa
Breadth, m	13.3
Draught, m	2.35 floating 0.87 on cushion
No of shafts	2 waterjets + 2 lift fans
Machinery	2 MTU 12V396 TE84 diesels + 2 MTU 8V396 TE54 diesels
Power, h. p.	3800 + 1880
Max speed, kts	30
Fuel, t	diesel oil 65
Endurance, nm(kts)	1200(20)
Armament	M340-343: 1 x 2 Simbad SAM (~8 Mistral), 1 x 1 - 20/90 Mk 20 Rh202, 2 x 1 - 12.7/90, 2x Pluto Plus USV, decompression chamber M350-354: 1 x 2 Simbad SAM (~8 Mistral), 3 x 1 - 12.7/90, Oropesa mechanical, AGATE acoustic, ELMA magnetic minesweeping gear
Electronic equipment	M340-343: 2x Decca RN88 radars, TSM-2023N sonar M350-354: 2x Decca RN88 radars, SA950 sonar
Complement	M340-343: 38 M350-354: 32

Graphics

Project history

Surface-effect minehunters and minesweepers. Rigid-sidewall air-cushion design. All machinery mounted on main deck level to reduce acoustic and magnetic signatures.

Modernizations

2008-2011, Karmøy, Måløy, Hinnøy: - 2x Pluto Plus USV, TSM-2023N sonar; + 2x HUGIN1000 USV, TSM-2022 Mk 3 sonar

2008-2011, Alta, Otra, Rauma: - SA950 sonar; + TSM-2022 Mk 3 sonar

Naval service

Orkla suffered a catastrophic fire and subsequently sank at sea 19.11.2002. Oksøy ran aground on coastal rock in February 2005 but never was repaired and stricken in 2009.