ASW Sonars for Finnish Navy corvettes

Kongsberg's ASW sonars to be integrated on Finnish Navy's new Pohjanmaa-class corvettes.

15 April 2020




Kongsberg Maritime’s Anti-Submarine Warfare (ASW) and diver detection sonars will be used on the Finnish Navy's new Pohjanmaa-class corvettes. The corvettes are being developed under the Finnish Navy's Squadron 2020 project.

Kongsberg Sensor & Robotics signed a contract with Saab for £7.6 million to equip the vessels with its SS2030 and SD9500 sonars. Both sonars feature acoustic properties which make them suitable for deployment in shallow-water environments. Saab is providing and integrating the combat system for the new corvettes.

The SS2030 is capable of detecting torpedoes or other small objects in the water column. It 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.

An 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 Baltic Sea.

The SD9500, meanwhile, is a light and compact over-the-side dipping sonar with horizontal and vertical positioning capabilities for diver detection, ASW and volumetric survey assignments in shallow, reverberation-limited waters.