Japanese submarine Ro-13
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| History | |
|---|---|
 Japan | |
| Name | Submarine No. 23 |
| Builder | Kure Naval Arsenal, Kure, Japan |
| Laid down | 14 September 1918 |
| Launched | 26 August 1919 |
| Completed | 30 September 1920 |
| Commissioned | 30 September 1920 |
| Renamed | Ro-13 on 1 November 1924 |
| Stricken | 1 April 1932 |
| Renamed | Haisen No. 2 on 1 April 1932 |
| General characteristics | |
| Class & type | Kaichū type submarine (K2 subclass) |
| Displacement |
|
| Length | 70.10 m (230 ft 0 in) overall |
| Beam | 6.10 m (20 ft 0 in) |
| Draft | 3.68 m (12 ft 1 in) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range |
|
| Test depth | 30 m (98 ft) |
| Crew | 43 |
| Armament |
|
Ro-13, originally named Submarine No. 23, was an Imperial Japanese Navy Kaichū-Type submarine of the Kaichū II subclass. She was commissioned in 1920 and operated in the waters of Japan. She was stricken in 1932.
The submarines of the Kaichu II sub-class were larger and had a greater range than the preceding Kaichu I subclass, but they had the same powerplant, so their greater size resulted in a loss of some speed.[1] They also had a modified conning tower, bow, and stern, and the stern was overhanging.[1] They displaced 752 tonnes (740 long tons) surfaced and 1,019 tonnes (1,003.1 long tons) submerged. The submarines were 70.10 meters (230 ft 0 in) long and had a beam of 6.10 meters (20 ft 0 in) and a draft of 3.68 meters (12 ft 1 in). They had a diving depth of 30 meters (98 ft).
For surface running, the submarines were powered by two 1,450-brake-horsepower (1,081 kW) Sulzer Mark II diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 600-horsepower (447 kW) electric motor. They could reach 16.5 knots (31 km/h; 19 mph) on the surface and 8.5 knots (15.7 km/h; 9.8 mph) underwater. On the surface, they had a range of 6,000 nautical miles (11,000 km; 6,900 mi) at 10 knots (19 km/h; 12 mph); submerged, they had a range of 85 nmi (157 km; 98 mi) at 4 knots (7.4 km/h; 4.6 mph).
The submarines were armed with six 450 mm (18 in) torpedo tubes, four internal tubes in the bow and two external tubes mounted on the upper deck, and carried a total of ten Type 44 torpedoes. They were also armed with a single 76.2 mm (3.00 in) deck gun mounted aft of the conning tower.[1]
Construction and commissioning
Ro-13 was laid down as Submarine No. 23 on 14 September 1918 by the Kure Naval Arsenal at Kure, Japan.[2] Launched on 26 August 1919,[2] she was completed and commissioned on 30 September 1920.[2]