The Fridtjof Nansen-class frigates are larger, and have more personnel and equipment than the Oslo-class frigates.
The selection of Navantia as prime contractor led to the design being very similar to the Spanish Navy's Álvaro de Bazán-class frigates, including the incorporation of Lockheed Martin's AEGIS combat system. Eventually, the need for a robust anti-aircraft defense as well as the possibility of incorporating the Naval Strike Missile surface-to-surface missile produced by Norwegian company Kongsberg Defence & Aerospace led to a more multi-role design. The frigates were originally intended as a replacement for the aging Oslo-class frigates, with a primary focus on anti-submarine warfare (ASW). As of November 2018, four are in active service and one has sunk and later been scrapped. The total projected cost for all five ships is 21 billion kr (about USD 2.39 billion). Five ships were ordered from Spanish shipbuilder Bazan (now Navantia). The ships are named after famous Norwegian explorers, with the lead ship of the class bearing the name of Fridtjof Nansen, the Norwegian scientist, explorer and humanitarian. The Fridtjof Nansen-class frigates are a class of frigates that are the main surface combatant units of the Royal Norwegian Navy.
4 × torpedo tubes for Sting Ray torpedoes.Captas MK II V1 active/passive towed array sonar.Reutech RSR 210N air/sea surveillance radar.Lockheed Martin AN/SPY-1F 3D multifunction radar.Bow Thruster Retractable (Electric) 1 MW Brunvoll.two shafts driving controllable pitch propellers.One GE LM2500 21.5 MW gas turbine for high speed running.Two BAZAN BRAVO 12V 4.5 MW diesel engines for cruising.Combined diesel and gas turbine (CODAG).
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