Japanese submarine Ro-16
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 Ro-16 during the 1920s, sometime after her name was changed from Submarine No. 37 to Ro-16 on 1 November 1924. | |
| History | |
|---|---|
 Japan | |
| Name | Submarine No. 37 |
| Builder | Kure Naval Arsenal, Kure, Japan |
| Laid down | 18 November 1920 |
| Launched | 22 April 1921 |
| Completed | 29 April 1922 |
| Commissioned | 29 April 1922 |
| Renamed | Ro-16 on 1 November 1924 |
| Stricken | 1 September 1933 |
| Fate | Hulked 1934 |
| General characteristics | |
| Class & type | Kaichū type submarine (K3 subclass) |
| Displacement |
|
| Length | 70.10 m (230 ft 0 in) overall |
| Beam | 6.12 m (20 ft 1 in) |
| Draft | 3.70 m (12 ft 2 in) |
| Installed power |
|
| Propulsion |
|
| Speed |
|
| Range |
|
| Test depth | 45.7 m (150 ft) |
| Crew | 46 |
| Armament |
|
Ro-16, originally named Submarine No. 37, was an Imperial Japanese Navy Kaichū-Type submarine of the Kaichū III subclass. She was commissioned in 1922 and operated in the waters of Japan. She was stricken in 1933.
The submarines of the Kaichu III sub-class were a slightly improved version of the preceding Kaichu II subclass, the man difference being an increase in diving depth from 30 to 45.7 meters (98 to 150 ft).[1] They displaced 752 tonnes (740 long tons) surfaced and 1,013 tonnes (997 long tons) submerged. The submarines were 70.10 meters (230 ft 0 in) long and had a beam of 6.12 meters (20 ft 1 in) and a draft of 3.70 meters (12 ft 2 in).
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-16 was laid down as Submarine No. 37 on 18 November 1920 by the Kure Naval Arsenal at Kure, Japan.[2] Launched on 22 April 1921,[2] she was completed and commissioned on 29 April 1922.[2]