The Pansio-class minelayers[1] are a three-strong class of mine warfare vessels used by the Finnish Navy, built between 1991 and 1992.

The ships are referred to as "mine ferries" in the Finnish Navy.

The upgrades included new main and auxiliary engines, as well as a new high-pressure fire extinguishing system.

[3] The vessels were also equipped with a Saab Trackfire remote weapon station with a 7.62 mm PKM machine gun and a 40 mm Heckler & Koch GMG.

On 24 August 2022 Pyhäranta ran aground in the Archipelago Sea, off Turku, Finland.