GE Marine to Provide LM2500 Marine Gas Turbines for Finnish Navy’s New Pohjanmaa Class Corvettes

GE Marine, part of General Electric (GE) Aviation, has received a contract to provide four LM2500 marine gas turbines for Finnish Navy’s four new Pohjanmaa class multipurpose corvettes.

The contract was awarded by Rauma Marine Constructions (RMS) in Rauma, Finland. The Pohjanmaa class corvettes are being constructed by RMC as part of the Finnish Navy’s Squadron 2020 Project.

“We are excited to work with Rauma Marine Constructions to bring GE’s popular LM2500 marine gas turbines to the Finnish Navy. In fact, Finland is now the 39th navy worldwide to adopt GE’s LM gas turbines for naval propulsion,” said GE’s Kris Shepherd, Vice President, General Manager, Marine Operations. “The LM2500s will be equipped with GE’s new composite gas turbine module which was of particular interest for this application. The new enclosure offers a significant reduction in weight over its steel predecessor, and most importantly, a safer environment and improved access for sailors,” Shepherd added.

According to Mr. Jyrki Heinimaa, CEO of Rauma Marine Constructions, ”Due to the global COVID-19 situation, the contract negotiations were challenging and required additional effort and teamwork from both parties. RMC looks forward to working with GE and is confident that GE’s vast experience in naval gas turbine technology is a perfect fit for the Squadron 2020 project and for the Finnish Navy.”

Pohjanmaa class corvettes are designed for year-round service in the seasonally freezing Baltic Sea, and will have the ability to operate independently in ice. Each 3,900-ton corvette will feature one GE LM2500 gas turbine in a Combined Diesel eLectric And Gas turbine (CODLAG) configuration to reach speed in excess of 26 knots. GE also will provide a full complement of gas turbine auxiliary systems including electric start and water mist firefighting systems, fuel forward and water wash skids, and controls.

The LM2500 gas turbines will be Made in the U.S.A. at GE’s manufacturing facility in Evendale, Ohio. Construction of the corvettes by the shipyard is slated to begin in 2022; all ships are expected to be delivered to the Finnish Navy by 2026 and fully operational in 2028.

Finnish Navy Pohjanmaa-class corvettes

The Pohjanmaa class is a class of four multi-role corvettes currently under development for the Finnish Navy as part of the Squadron 2020 (Finnish: Laivue 2020) project.

The new vessels are to be constructed at the Rauma Marine Constructions (RMC) shipyard in Rauma, Finland. The construction of the vessels is scheduled to begin in 2022 and the four-strong squadron is expected to achieve operational readiness by 2028.

The corvettes, along with the four Hamina-class missile boats that are being upgraded, will form the backbone of the Finnish Navy from the mid-2020s. The vessels will replace seven older vessels that have been or are due to be decommissioned: the Pohjanmaa minelayer, two Hämeenmaa-class minelayers, and four Rauma-class missile boats.

The Pohjanmaa-class corvettes will have an overall length of 114 m, a beam of 16 m and a displacement of 3,900 tonnes. The class incorporates some major features including ice-strengthened hull.

The corvettes will be armed with Bofors 57 mm naval gun, Evolved Seasparrow Missile (ESSM) surface-to-air missiles, Gabriel anti-ship missiles, Torped 47 anti-submarine torpedoes, and sea mines. They will also be equipped with two Saab Trackfire remote weapon stations (RWS) and two NSV 12.7mm caliber heavy machine guns (HMG).

The vessels are to be equipped with a flight deck and a hangar that can accommodate either a helicopter or UAVs. Each ship will have a crew complement of 70–120.

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