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Corvette
Pohjanmaa-class corvette is a corvette. It was built by Rauma Marine Constructions. Reported operators include Finnish Navy.
FinlandTechnical data
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 29 Sept 2026 | 117 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 117 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 117 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 117 m | Wikipedia contributors | approved |
Pohjanmaa -class corvette
Rauma Marine Constructions
Finnish Navy
Rauma class Hämeenmaa class Pohjanmaa
About 1.3 billion euro for 4 ships
2023–present
2027– (first ship) 2029– (all ships)
4
4
Corvette
4,300 t (4,200 long tons)
117 m (383 ft 10 in)
16 m (52 ft 6 in)
5 m (16 ft 5 in)
1A (Finnish class)
1 × GE LM2500 gas turbine 4 × MAN 12V175D-MEL generating sets (4 × 1,920 kW)
Combined diesel-electric and gas (CODLAG) propulsion; 28 MW (38,000 hp) 2 × controllable pitch propellers 2 × bow thrusters
26 knots (48 km/h; 30 mph)
3,500 nmi (6,500 km; 4,000 mi)
14 days
70
Systems : Saab 9LV CMS (combat management system) Saab Lightweight Integrated Mast (SLIM) Radars : 4 × Sea Giraffe 4A FF ( 3D , S-band (IEEE) , AESA radar ) 1 × Sea Giraffe 1X ( 3D , X-band (IEEE) , AESA radar ) Electro-optical sensors : 2 × Saab CEROS 200 (optronic and radar tracking fire control director) Sonars : Patria dual-tow Sonac DTS (a ASW sonar with 1 × active variable depth sonar + 1 × passive towed thin-line receiving array) 1 × Kongsberg SS2030 (hull-mounted ASW sonar) 1 × Kongsberg SD9500 Communications : Saab TactiCall integrated communication system Satellite UHF Navigation : Exail Marins M3 INS ( inertial navigation system ) Exail Phins (redundant INS ) Netans DDU (Data Distribution Units)
Systems : Saab NLWS (naval laser warning system) ESM ECM COM-ESM Counter-measures : 4 × Rheinmetall MASS decoy systems
Torpedoes : 2 × Saab Dynamics Tub m/20 torpedo launchers , launching Saab lightweight torpedo Missiles : 1 × 8-cell Mk 41 VLS , with 4 × RIM-162 ESSM Block 2 (ITO 20) anti-air missiles per cell 2 × 4-cell launchers with Gabriel V (PTO 2020) anti-ship missiles Naval guns : 1 × Bofors 57 mm/70 SAK Mk3 , with Bofors 3P airburst munitions RCWS : 2 × Saab Trackfire Naval mines : Stern rails for 100 × PB 17 naval mines
Helicopter deck : 1 × deck at the stern Aircraft hangar : Dimensioned for 1 midsize helicopter (such as the NH90 ) and a UAV
The overall length of the Pohjanmaa -class corvettes is 117 metres (383 ft 10 in) and the beam 16 metres (52 ft 6 in). The maximum draught of the vessels is 5 metres (16 ft 5 in), corresponding to a displacement of about 4,300 tonnes (4,200 long tons ). With these dimensions, the multi-role corvettes are the largest Finnish surface combatants since the 1930s coastal defence ships Ilmarinen and Väinämöinen . Each ship will have a complement of about 70 officers and crew.
The Pohjanmaa class features a combined diesel-electric and gas (CODLAG) propulsion system with a total output of 28 megawatts (38,000 hp ). During normal operations, the ships' twin ice-strengthened controllable pitch propellers are driven by electric propulsion motors . Electrical power is generated by four 12-cylinder MAN 12V175D diesel generating sets , two of which are mounted on resilient foundations within soundproof enclosures to reduce noise and vibration during anti-submarine warfare operations.
For high-speed operations, a single General Electric LM2500 gas turbine driving both propeller shafts via a common gearbox provides a maximum speed in excess of 26 knots (48 km/h; 30 mph). For low-speed manoeuvring, the ships are fitted with two bow thrusters .
Pohjanmaa -class corvettes are equipped with a dual-purpose naval gun , surface-to-surface missiles , surface-to-air missiles , anti-submarine torpedoes , naval mines , close-in weapon systems, and decoy launchers. The forward-mounted Bofors 57 mm Mk3 dual-purpose main gun is reused from the Hamina -class missile boats . In addition, each corvette is fitted with two Saab Trackfire remote controlled weapon stations for close-range defence and four Rheinmetall Multi Ammunition Softkill System (MASS) decoy launchers.
While the Finnish Navy and the Ministry of Defence officially classify the new vessels as multi-role corvettes, several commentators have argued that, based on their displacement of about 4,300 tonnes (4,200 long tons), the ships more closely correspond to frigates . Following the award of the construction contract in September 2019, Member of Parliament Johannes Yrttiaho ( Left Alliance ) submitted a written question to the Parliament of Finland concerning, among other issues, the classification of the vessels.
Since the early 2000s, the Finnish Navy's surface combatant fleet has consisted primarily of fast attack craft with displacements of about 250 to 300 tonnes (250 to 300 long tons). Until the introduction of the Pohjanmaa class, the largest surface combatants in Finnish service are the two 1,450-tonne Hämeenmaa -class minelayers .
Pohjanmaa -class corvette Finland Corvette 0 (+ 4 on order) 117 m (383 ft 10 in) / 4,300 t (4,200 long tons) Weapons: SLWT and Torped 45 torpedoes launched from 2 × Saab Dynamics Tub m/20 launchers 8 × 4 RIM-162 ESSM Block 2 (ITO 20) SAM launched from Mk 41 VLS (8-cell) 2 × 4 Gabriel V (PTO 2020) anti-ship missiles 1 × Bofors 57 mm/70 SAK Mk3 (Bofors 3P ammo) 2 × Saab Trackfire Stern rails for 100 × PB 17 naval mines MASS ( Soft-kill System)
Pohjanmaa class 4 – Corvette – Finland Sweden (electronic) Rauma Marine Construction Pohjanmaa – Launched 4,300 t (4,200 long tons)
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.