The project of this boat is an auxiliary mid-size passenger boat, built in Poland for the needs of the Soviet Navy. In addition to the passenger version, there were also medical boats based on this project. In total, in the period from 1978 to 1985, 40 boats of this type were built.

The passenger boat of this project is designed to carry up to 22 passengers, and the medical boat - up to 15 patients. The boat has a cargo hold, the autonomy is up to 6 days. The seaworthiness ensures the sailing of the boat in a sea state of up to 5 points.

Medical boat SN-126 laid down at Wisla Shipyard, Gdansk, Poland, commissioned in 1978 and was assigned to the Black Sea Fleet.

On 16 July 2009 the boat was excluded from the Black Sea Fleet.