12-inch gun's breech - bottom view

In 1940, three pieces of TM-3-12 with another 12-inch guns were transported to the Soviet naval base in Hanko (Finland). Before evacuating this base in late 1941 the barrels of their guns were damaged by the Soviets, but the Finns regained transporters and mounted their barrels from Alexander III (on the photo). These guns were at Hanko till Finland's defeat in 1944 and after that the transporters with guns were returned to USSR, to Krasnaya Gorka fort.