does this navy have submarines?
Yes. Som and Forelle
Imperial Russian Navy
By 25 June, the Imperial Russian Navy had purchased (in secrecy) its first naval submarine (known as "Madam") from Isaac Rice's Electric Boat Company. 
describe the petropavlovsk-class battleship An upper belt of armor was necessary and the weight required was gained by shortening the waterline armor belt, which left the ships' ends protected only by the sloping armor deck. Other changes included the replacement of the barbettes with turrets of the same type as used in the battleship and the substitution of QF guns for the original guns. This last change saved enough weight to permit four more six-inch guns to be added what weapons does it carry? Four 40-caliber 12-inch guns mounted in twin-gun turrets fore do you know who built it? The director of the Naval Ministry, Vice Admiral since when has it been in service? 10 May 1900 which navy uses this ship? Imperial Russian Navy
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Imperial Russian Navy [SEP] Russian submarines
By 25 June, the Imperial Russian Navy had purchased (in secrecy) its first naval submarine (known as "Madam") from Isaac Rice's Electric Boat Company. This submarine was (originally) built under the direction of Arthur Leopold Busch as the American torpedo boat "Fulton". It was a prototype of the (Holland Type 7 Design) known as the "Adder"-class/ submarines. By 10 October, this first Russian submarine was (officially) commissioned into service (and shipped to) the eastern coast near Vladivostok Russia and was renamed "Som" or (Catfish). This first Russian submarine was not ready in time for the Russo-Japanese War. The reason behind this delay was partly due to a (late) shipment of torpedoes (that was) originally ordered from Germany in early 1905.