GOTHENBURG, February 23, 2026 : The Royal Swedish Navy (RSwN) is advancing plans to procure four Luleå-class air defence frigates in what officials describe as a structural shift from a primarily coastal defence force to a navy capable of sustained blue water operations alongside NATO allies. The programme will restore frigate capability to Sweden’s surface fleet for the first time since the early 1980s.
Chief of the Navy Rear Admiral Johan Norlén detailed the initiative during the Navy Tech 2026 conference held in Gothenburg on February 3. He said the introduction of air defence frigates represents a new capability set for both the navy and the Swedish Armed Forces, strengthening area air defence and anti-submarine warfare (ASW) capacity in Sweden’s immediate region and in alliance operations beyond the Baltic Sea.
Transition From Coastal Defence to Regional Maritime Control
For decades, Sweden’s naval doctrine focused on denying an adversary freedom of action in the confined and congested waters of the Baltic Sea. The fleet structure emphasized smaller surface combatants, including the Visby-class corvettes, optimized for stealth, electronic warfare, emission control, deception, dispersion and rapid reaction in archipelagic and narrow sea environments.
Rear Admiral Norlén explained that the objective was not to dominate sea space but to restrict its use, thereby creating time for ground forces to mobilize. Survivability and agility were prioritized over mass and visibility, shaping investments in stealth design and electronic warfare capabilities.
Following Sweden’s accession to NATO after Russia’s full-scale invasion of Ukraine, the Ministry of Defence reassessed maritime requirements. The earlier Ytstridsfartyg 2030 (YSF 2030) programme, which envisioned larger corvettes, was cancelled in favour of acquiring frigate-sized vessels capable of contributing to alliance operations both within and outside the Baltic region.
Rear Admiral Norlén stated that the new ships will expand Sweden’s operational profile by adding area air defence and enhanced ASW capability, including the use of embarked helicopters.
Procurement Approach and Evaluation Process
The Swedish Defence Materiel Administration (FMV) shifted its acquisition strategy in May 2025 from a domestic design effort with Saab to an international market survey. Rear Admiral Fredrik Lindén, Director of FMV’s Naval Systems Division, said the decision was driven by the need for rapid delivery and reduced technical risk. The objective is to have the first two frigates delivered by the end of 2030.
FMV assessed proposals based on delivery schedule, capability and price. Its evaluation was submitted to the Swedish Armed Forces and the Ministry of Defence at the end of January 2026. A government decision on the selected design is expected in the near term.
The four vessels will be named HMS Luleå, HMS Norrköping, HMS Trelleborg and HMS Halmstad. Entry into service is scheduled from 2030 onward.
Standardised Weapons and Systems Architecture
Regardless of the selected hull design, the RSwN has mandated high levels of commonality with existing and planned Swedish systems to ensure streamlined logistics, training and integration.
The primary area air defence capability will be provided by the MBDA Aster 30 missile family, with both Block 1 and Block 1NT variants under evaluation. For inner-layer air defence, the ships will carry the MBDA Common Anti-air Modular Missile (CAMM), ensuring compatibility with the Sea Ceptor system being installed on the Visby-class corvettes.
The frigates will be equipped with the Saab RBS 15 anti-ship missile and the Saab Torpedo 47 lightweight torpedo for ASW missions. A BAE Systems 57 mm Mk 3 medium-calibre naval gun will serve as the main gun system.
All three competing designs incorporate vertical launch systems for Aster 30 and CAMM missiles, aviation facilities capable of operating one NH90 and one MH-60R helicopter, and a combined ASW sensor suite consisting of hull-mounted and variable-depth sonars.
Competing Designs
Three European shipbuilders have submitted proposals for the Luleå-class programme.
Babcock of the United Kingdom has offered the Arrowhead 120 design, developed in partnership with Saab. The vessel measures 124 metres in length with a displacement of approximately 4,650 tonnes. The steel hull would be constructed at Rosyth, while Saab Kockums would produce a lightweight composite superstructure. The combat management system is based on Saab’s 9LV system, supported by Sea Giraffe 4A S-band and Sea Giraffe 1X X-band radars integrated into a single mast structure.
Naval Group of France has proposed a variant of its Frégate de Défense et d’Intervention (FDI), based on the Amiral Ronarc’h-class currently entering service with the French and Hellenic navies. The design features the SETIS combat management system and the Thales SeaFire S-band radar, with established integration of the Aster 30 missile. Naval Group has indicated a 36-month construction timeline from its active production line in Lorient.
Navantia of Spain has submitted the ALFA 4000, a 120-metre extended version of the ALFA 3000 corvette previously delivered to Saudi Arabia. The company has proposed an initial operational capability in 2030 and delivery of all four ships, including trained crews, by the end of 2031. The design offers either the Saab 9LV or Navantia SCOMBA combat management system and includes Saab Sea Giraffe 4A and 1X radars within an integrated mast configuration.
Visby-Class Mid-Life Upgrade
In parallel with the frigate acquisition, the RSwN is implementing a staged Mid-Life Upgrade (MLU) of its five Visby-class corvettes under a contract awarded to Saab in 2025.
The first upgrade campaign, beginning in summer 2026, will retrofit the MBDA Sea Ceptor system using the CAMM effector and integrate the latest generation of the RBS 15 anti-ship missile. The second campaign, planned for the early 2030s, will address further ASW and electronic warfare enhancements, with the goal of increasing system commonality with the future Luleå-class frigates.
Expanded Operational Role
The Luleå-class programme is intended to provide Sweden with an area air defence capability and enhanced maritime control capacity that aligns with NATO operational requirements. By combining long-range Aster 30 missiles, layered air defence through CAMM, integrated helicopter operations and advanced ASW sensors, the new frigates are expected to extend Sweden’s operational reach beyond its traditional focus on confined coastal waters.
According to Rear Admiral Norlén, the programme completes Sweden’s coastal and littoral capabilities while introducing a blue water component capable of supporting alliance missions across a broader operational spectrum.
——— End of Article ———
