KNM Thor Heyerdahl 

The first frigate KNM "Fridtjof Nansen" was tested and went on its own machine on 27 June 2005. The Spanish shipyard that builds frigates is currently in deep economic problems and after several delays the vessel was handed over April 5, 2006 and sailed into the Oslo Fjord 1 June 2006.
Frigate number two, KNM "Roald Amundsen" was launched and christened on May 25, 2005 and handed over to the Navy 21 May 2007. [5] «Roald Amundsen» has several changes in relation to non-operative «Fridtjof Nansen», the most important being that it has the "Link 16" communication system. Cutting of the first steel to the fifth frigate KNM "Thor Heyerdahl" started April 19, 2005.
KNM "Helge Ingstad" collided on November 8, 2018 with a tanker in Øygarden and was partially sunk with major damage. With this, only three out of five frigates are capable of sailing by November 2018.
KNM «Thor Heyerdahl» is a Norwegian frigate of the Fridtjof Nansen class. It was handed over to the Armed Forces from the Spanish Navantia Shipyard in January 2011. [1] KNM "Thor Heyerdahl" was the last vessel in the series of five new frigates that were delivered to the Navy during the period 2006-2011. KNM «Thor Heyerdahl» was named after Thor Heyerdahl.
In the period 2006-2011, the Armed Forces took over five frigates in this class. Six NH90 helicopters for use on frigates should be handed over at the same time, but delayed. The total price for the five frigates was 21 billion, the largest project in the Armed Forces at that time.