From the hook to the 21-K cannon

In April 2015, a model of the 21-K 45 mm naval gun was manufactured according to the RO-321.00.000SB drawing for the museum of military equipment in v. Pyshma.

21-K 45-mm semi-automatic universal cannon is a 45mm cannon, which was in service with the USSR Navy in the 1930–1950s.
In February 2015, the Semaphore was made according to the drawing 16108.00.00.000 SB for the museum of military equipment in v. Pyshma.