Repair of guns by Finnish specialists in 1941

The transporters TM-3-12 were manufactured at LMZ (Leningrad Metall Plant) in 1939, in February 1940 they passed firing tests at the NIMAP training ground, after which they went to the southern coast of the Gulf of Finland in the area of the Kurgalsky Peninsula as part of battery No9. The battery participated in the Winter War of 1939-40 with shelling of the city of Vyborg (150 shells).