Russian navy increasing her submarine fleet with 5 more submarines according to the Dutch magazine Marineblad dated 1913-1914 no. 8

An item reported that in September the keel was laid down for the Russian submarines Bars, Wepz, Wolk and Gepard of 500 ton to be launched in summer 1914. In September was at Nikolajev the submarine Morshi of 460 9surfaced)-610 (submerged) tons launched.