The composition of the Russian White Sea Fleet on 20 March 1939

1 Flotilla leader-3,106 tons

1 Old destroyer-1,399 tons

3 Torpedo boats&escort vessels-2,220 tons

9 Large submarines-8,922 tons

4 Medium submarines-2,000 tons

12 Smalll submarines-2,160 tons

Total 30 units with 19,807 tons

Source

Bundesarchiv Naval Attache Moscow RM-12-II-159