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 Submarines | 14 |
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 Submarines | 7 |
| —— | |
| Total number of vessels in Japanese Flotillas | 21 |