Eirik Raude Class
| Eirik Raude Class Ballistic Missile Submarine | |
 Eirik Raude Class Ballistic Missile Submarine | |
| Career |  |
|---|---|
| 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
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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
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
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
- 4 bow 21 in (533 mm) torpedo tubes with 32 mixed capacity of the following:
- Saab Dynamics Torpedo 62 torpedoes
- Saab Dynamics RBS15 Mk3 anti ship missiles
- 16 × ballistic missile tubes for K21 or K31 missiles with ATVH-53 warheads.
List of ships
| # | 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 |