
After the conclusion of a truce between Finland and the USSR in September 1944, transporters with 305- and 180 mm guns were returned to the USSR. Transporters TM-3-12 became part of the 1st Guards Marine Railway Krasnoselsky Red Banner Artillery Brigade as a separate battery No. 294 in the city of Baltiysk. In 1961, the battery was disbanded, and the conveyors left for the railway, which is not far from the fort of Krasnaya Gorka.
Now one transporter is in Moscow on Poklonnaya Gora museum, the second is in Steam Locomotive Museum near the Warsawskiy Railway Station in St. Petersburg, and the third is in the museum of Fort Krasnaya Gorka.