Japanese submarine Ro-20
History | |
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Japan | |
Name | Submarine No. 38 |
Builder | Yokosuka Naval Arsenal, Yokosuka, Japan |
Laid down | 28 July 1919 |
Launched | 26 October 1920 |
Completed | 1 February 1922 |
Commissioned | 1 February 1922 |
Renamed | Ro-20 on 1 November 1924 |
Stricken | 1 April 1934 |
Fate |
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General characteristics | |
Class and type | Kaichū type submarine (K3 subclass) |
Displacement |
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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 |
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Propulsion |
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Speed |
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Range |
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Test depth | 45.7 m (150 ft) |
Crew | 46 |
Armament |
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Ro-20, originally named Submarine No. 38, 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 1934.
Design and description
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-
The submarines were armed with six 450 mm (18 in)
Construction and commissioning
Ro-20 was
Service history
Upon commissioning, Submarine No. 38 was attached to the Yokosuka Naval District, to which she remained attached throughout her career.[2] On 6 February 1922, she was assigned to Submarine Division 5 and to the Ominato Defense Division,[2] and on 1 November 1924 she was renamed Ro-20.[2] On 1 November 1925, Submarine Division 5 was reassigned to the Yokosuka Defense Division,[2] then directly to the Yokosuka Naval District on 1 December 1926, and then to the Yokosuka Defense Division again on 10 January 1927.[2]
Ro-20 was stricken from the Navy list on 1 April 1934.[2] Her engines were removed at Uraga Shipyard, and on 6 July 1935 she was sold to the Fisheries Association of Miura District in Kanagawa Prefecture for use as an artificial reef. She subsequently was scuttled to serve as a breeding ground for fish and fishing reef.
Notes
References
- "Rekishi Gunzō"., History of Pacific War Vol.17 I-Gō Submarines, ISBN 4-05-601767-0
- Rekishi Gunzō, History of Pacific War Extra, "Perfect guide, The submarines of the Imperial Japanese Forces", Gakken (Japan), March 2005, ISBN 4-05-603890-2
- The Maru Special, Japanese Naval Vessels No.43 Japanese Submarines III, Ushio Shobō (Japan), September 1980, Book code 68343-44
- The Maru Special, Japanese Naval Vessels No.132 Japanese Submarines I "Revised edition", Ushio Shobō (Japan), February 1988, Book code 68344-36
- The Maru Special, Japanese Naval Vessels No.133 Japanese Submarines II "Revised edition", Ushio Shobō (Japan), March 1988, Book code 68344-37
- The Maru Special, Japanese Naval Vessels No.135 Japanese Submarines IV, Ushio Shobō (Japan), May 1988, Book code 68344-39