Support the project with paypal

FRIDTJOF NANSEN frigates (2006-2011)


Thor Heyerdahl 2012


Name No Yard No Builder Laid down Launched Comp Fate
Fridtjof Nansen F310   Navantia, El Ferrol, Spain 9.4.2003 2.6.2004 5.4.2006 in service (2019)
Roald Amundsen F311   Navantia, El Ferrol, Spain 2.6.2004 25.5.2005 21.5.2007 in service (2019)
Otto Sverdrup F312   Navantia, El Ferrol, Spain 28.5.2005 28.4.2006 30.4.2008 in service (2019)
Helge Instad F313   Navantia, El Ferrol, Spain 28.4.2006 23.11.2007 29.9.2009 collision 8.11.2018
Thor Heyerdahl F314   Navantia, El Ferrol, Spain 27.9.2007 11.2.2009 17.1.2011 in service (2019)

Technical data

Displacement standard, t4600
Displacement full, t5290
Length, m

127.1 pp 133.3 oa

Breadth, m

15.9 wl 16.8 oa

Draught, m


No of shafts2

CODAG: 1 General Electric LM-2500 gas turbine + 2 Izar-Bravo 12V diesels

Power, h. p.


Max speed, kts


Fuel, tdiesel / gas turbine oil
Endurance, nm(kts)4500(16)

1 x 8 ESSM SAM (VLS, 32 RIM-162A), 1 x 1 - 76/62 OTO-Melara Compact SR, 5 x 1 - 12.7/90, 2x LRAD acoustic guns, 2 x 2 - 324 TT (Stingray), 1 helicopter (NH90)

Electronic equipmentSPY-1F, 2x SPG-62, 2x Litton nav., RSR-210N radars, Vigy 20 e/o system, Spherion MRS2000, CAPTAS Mk 2(v)1 / UMS4229 sonars, Condor CS-3701 ECM suite, 4x DL-12T decoy RL, LOKI torpedo decoy, MSI2005F CCS


Standard scale images

<i>Frdtjof Nansen </i>2010
Frdtjof Nansen 2010


<i>Thor Heyerdahl </i> 2012
Thor Heyerdahl 2012

Project history

Bazan design was confirmed 29.2.2000 after competition with Lockheed Martin. Contract was signed 23.6.2000. Program became the single largest Norwegian defence project ever undertaken. Some of armament and sensors may have been transferred from Oslo class. Able to operate with no personnel in the engine rooms. Signature-reduction measures include topside shaping, acoustically hooded machinery and IR suppression system, wet-down spray system, propeller shaft grounding and a flexible drive train. GRP radar mast. Combat system is a variant of USN Aegis. Space and weight are reserved for second Mk 41 VLS for Standard SM-2 missiles, 1 40mm gun or CIWS and SLQ-25 Nixie torpedo decoy. Ships have problems with corrosion.


2012, all: + 2 x 4 NSM SSM (8 NSM)

Naval service

Helge Instad collided 8.11.2018 with 250m-long Maltese tanker Sola TS on coastal fairway N of Bergen, was abandoned(!) by crew and, бstaying on the move, with efficient engines, but unmanned ran aground and partially sunk in shallow water 13.11.2018. She was salvaged in March 2019 and sold for scrap. Estimated cost of ship's repair would exceed the cost of her building three times.