Kongsberg press release
Under the terms of the contract, which equates to approximately 100MNOK, KONGSBERG will equip the vessels with its SS2030 and SD9500 sonars, both of which boast acoustic properties which make them ideally suited for deployment in shallow-water environments.
The SS2030, principally devised for ASW operations and capable of detecting torpedoes or other small objects in the water column, is an active hull-mounted sonar which utilises sophisticated tracking algorithms. Its electronically-stabilised transmitting and receiving beams can be tilted to adjust to challenging sound speed profiles, with its integrated Sound Propagation Model determining the optimal tilt settings and enhancing the Probability of Detection (PoD) ratio. The SS2030 sonars will be delivered to the Finnish Navy complete with hoistable hull units and ice protection to ensure safe and efficient operation in the often harsh conditions of the Baltic Sea.
The SD9500, meanwhile, is a light and compact over-the-side dipping sonar with outstanding horizontal and vertical positioning capabilities for diver detection, ASW duties and volumetric survey assignments in shallow, reverberation-limited waters.
“We are very pleased to have been selected for another sonar program for the Finnish Navy and to further strengthen our position as a principal supplier of shallow-water ASW, diver detection and mine-hunting equipment. The armed forces, as with all defence industries, have to rely upon the most advanced technology available in order to fulfil their responsibilities effectively, and this new naval contract is another resounding testimony to the deep level of trust the KONGSBERG brand has accumulated over our many successful years of trading.”
Thomas H Dahle, Director of Sales at KONGSBERG
About Pohjanmaa-class corvette
The Pohjanmaa-class corvettes (Squadron 2020 program) will be constructed in Finland. They will be multi role surface combatants with ice breaking capabilities. In April 2019, Saab was selected as the preferred bidder for the development and delivery of combat systems. The vessels will be equipped with ESSM surface to air missiles, Gabriel V anti-ship missiles and Torped 47 torpedoes.
Saab will provide a wide range of systems and solutions for the Pohjanmaa corvettes, including:
- Trackfire Remote Weapon Station
- TactiCall integrated communication system
- Saab Lightweight Integrated Mast (SLIM)
- Sea Giraffe 4A Fixed Face radar
- Sea Giraffe 1X radar
- Saab’s new lightweight torpedo
- Ceros 200 radar and electro-optical director
- Saab Naval Laser Warning System
Together with the existing four Hamina-class missile boats that are currently being modernized, the four new corvettes will form the backbone of the Finnish Navy from the mid-2020s. They will replace seven older vessels that have been or are due to be decommissioned: the single Pohjanmaa and two Hämeenmaa-class minelayers as wll as four Rauma-class missile boats.
The construction contract (worth 647.6 million Euros) was awarded to Finnish shipbuilder Rauma Marine Constructions in September 2019. The construction of the four corvettes will is set to start in 2022 and end in 2025. Full operational status of the entire Pohjanmaa-class with the Finnish Navy is expected to be achieved by 2028.
Pohjanmaa-class Corvette General characteristics
Length: 114 m (374 ft)
Beam: 16 m (52 ft)
Displacement: 3,900 tonnes (3,800 long tons; 4,300 short tons)
Crew: 70 to 120 sailors