Submarines of 800–1,500 tons (Tigr class), no particulars: (completing)12
Submarines of 500–600 tons (Kaschalot class), range 3,000 miles, speed 16/10 knots, armament 3 torpedo tubes and 1 q.-f. gun: (in commission)7
Submarines of 400–500 tons (Alligator class), range 3,000 miles, speed 15/10 knots, armament 4 torpedo tubes: (in commission)4
Submarines of 300–400 tons (Akula class), range 2,500 miles, speed 16/10 knots, armament 3 torpedo tubes: (in commission)1
Submarines of 200–300 tons (Karp class), range 1,000 miles, speed 12/8 knots, armament 2 torpedo tubes: (in commission)2
Submarines of 200 tons (Makrel class), range 800–1,000 miles, speed 10/8 knots, armament 2 torpedo tubes and 2 holders: (in commission)2
Total Sea-going Submarines28

Coast and Harbour Defence Vessels.

Submarines of 150–200 tons (Minoga class, Lossos class, Sig, Sterliad class, Som class, Ostr class, and Graf Cheremetieve class), range 400–600 miles, speed 11–9 knots on surface and 6–7 knots submerged, armament 1–3 torpedo tubes and holders: (in commission)19
Total Coast Defence Submarines19
——
Total number of vessels in Russian Flotillas47

JAPANESE NAVY.

Sea-going Vessels.

Submarines of 500 tons (Nos. 16–17), range 3,500 miles, speed 18/9 knots, armament 6 torpedo tubes and holders: (completing)6
Submarines of 300–400 tons (Nos. 10–15), range 1,700 miles, speed 14/9 knots, armament 2 torpedo tubes: (in commission)6
Submarines of 300 tons (Nos. 8–9), range 1,500 miles, speed 13/8 knots, armament 2 torpedo tubes: (in commission)2
Total Sea-going Submarines14

Coast and Harbour Defence Vessels.

Submarines of 180–200 tons (Nos. 6–7), range 800 miles, speed 10/8 knots, armament 1 torpedo tube: (in commission)2
Submarines of 100–150 tons (Nos. 1–5), range 500 miles, speed 9/7 knots, armament 1 torpedo tube: (in commission)5
Total Coast Defence Submarines7
——
Total number of vessels in Japanese Flotillas21

GERMAN NAVY.