All four vessels underwent a 70 million EUR modernization program at the Western Shipyard in Teijo.

The sonar and ASW systems are being completely renewed (the previous Simrad ST 240 has been replaced by a ST2400).

[1] The vessels were previously armed with a sextuple Mistral SAM launcher, which could be replaced by a Sako twin-barrel 23 mm/87 anti-aircraft cannon (a modified version of the ZU-23-2).

Additionally the vessels had a portable Mistral SAM launcher pad that could be mounted on the ship's deck, or on land, in order to protect them when moored.

On 18 February 2015, the Finnish media reported that the Rauma class has been banned from use after fatigue damage was discovered in the vessels' hull.