Eirik Raude Class

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Eirik Raude Class Ballistic Missile Submarine
Eirik Raude Class 01.jpg
Eirik Raude Class Ballistic Missile Submarine
Career Flag of Kalmar Union.png
Nationality: Skandinavia
Operated by: Kongelige Strategiskestyrker
Builder: Saab Kockums
Ordered: First of class: May 1986
Launched: First of class: September 1992
Commissioned: First of class: April 1996
Status: In Service
General characteristics
Displacement: Surface: 8,770 tons
Submerged: 9,415 tons
Length: 134.00 m
Beam: 12.10 m
Draft: 9.80 m
Power: 36MW
Propulsion: 1 × ASEA PWR2M nuclear reactor
2 × ASEA geared turbines (16MW each)
1 × shaft NAtech Marine Pump-jet
2 × auxiliary retractable propulsion motors
2 × ASEA turbo generators (6 MW)
2 × SCANIA diesel alternators (2MW)
Speed: Over 25 knots submerged
Range: Unlimited
Complement: 15 officers
120 sailors
Armament: Sensors
1 x Saab 9LV CMS Combat Management System
1 x Saab 9LV FCS Fire Control System
1 x Saab EOS 500 Electro Optical Fire Control
1 x TERMA SCANTER 4100 Surveillance Radar
1 x Saab SSSu 11 Integrated sonar sensor suite
1 x Thales Optronics CK51 search periscope
1 x Thales Optronics CH91 attack periscope
Electronic warfare
1 x Saab SME-200 Tactical EMS / ELINT
Decoys
2 x TERMA Loki submarine torpedo countermeasure
Armament
4 bow 21 in (533 mm) torpedo tubes with 32 mixed capacity of the following

The Eirik Raude Class is a class of Skandinavia nuclear-powered ballistic missile submarines (SSBNs) in service with the Kongelige Strategiskestyrker (Royal Strategic Forces). The class was introduced in 1996 to replace the former Odin Class SSBN and includes four boats. They were built between 1989 and 1999 at Malmö by Kockums Naval Solutions, which is now named Saab Kockums. All four boats are based at Haakonsvern Naval Base.

The four ships of the class, along with the ICBM mobile launchers are today the only launch pads for Kalmar Union's strategic nuclear weapons. The doctrine for nuclear deterrence proposes that there are always two submarines in active patrol service.

Power generation & propulsion[edit | edit source]

The Eiri Raude Class submarine’s main nuclear powered propulsion system is based on the second-generation ASEA PWR2M, which was developed specifically for the Eiri Raude Class. Current generations of PWR allow submarines to circumnavigate the world about 20 times, whereas the latest development of PWR would allow circumnavigation 40 times without refuelling.

The other main items of machinery are two ASEA geared steam turbines, and a single shaft with a NAtech Marine Pump-jet propulsor. There are two SCANIA diesel alternators, and two turbo generators from ASEA. The propulsion system provides a maximum submerged speed over 25kt.

Electronic systems[edit | edit source]

One of the main design premises was the need to mount Skandinavian made electronic systems in order to full integration with other Forsvaret systems and satellite net.

Sensors

  • 1 x Saab 9LV CMS Combat Management System
  • 1 x Saab 9LV FCS Fire Control System
  • 1 x Saab EOS 500 Electro Optical Fire Control
  • 1 x TERMA SCANTER 4100 Surveillance Radar
  • 1 x Saab SSSu 11 Integrated sonar sensor suite
  • 1 x Thales Optronics CK51 search periscope
  • 1 x Thales Optronics CH91 attack periscope

Electronic warfare

  • 1 x Saab SME-200 Tactical EMS / ELINT

Decoys

  • 1 x TERMA Loki submarine torpedo countermeasure

Armament[edit | edit source]

List of ships[edit | edit source]

# Name Ordered Launched Commissioned
S-21 KKS Eirik Raude May 1989 September 1992 April 1996
S-22 KKS Leif Eriksson May 1989 March 1994 September 1997
S-23 KKS Hardeknud May 1989 July 1995 April 1998
S-24 KKS Harald Hardrada May 1989 December 1996 May 1999