Russian submarine Petr Koshka executing trials according to the Dutch magazine Marineblad dated 1901-1902 no. 11

An item reported that the Russian submarine of lieutenant Kolbasiev built at Kronstadt was to be disassembled, sent in parts over land to the Black Sea, there assembled and executing her trials.(1)

Note
1. The in 1901 at Kronstadt built 20 tons submarine Petr Koshka, designed by engineer Nikola Nikolaevich Kuteinikov and lieutenant Evgeniy Viktorovich Kolbas’yev.