Japanese submarine Ro-60

Ro-60 was a Japanese Type L submarine of the Imperial Japanese Navy which served during the 1920s and World War II.

History
Empire of Japan
Name: Ro-60
Laid down: 5 December 1921
Launched: 22 December 1922
Commissioned: 17 September 1923
General characteristics
Class and type: Type L4 (Ro-60-class) submarine
Displacement:
  • 988 long tons (1,004 t) (surfaced)
  • 1,301 tons (1,322 t) (submerged)
Length: 78.39 m (257 ft 2 in)
Beam: 7.41 m (24 ft 4 in)
Draft: 3.96 m (13 ft 0 in)
Propulsion: 2 × Vickers diesels, 2 shafts
2,400 bhp (surfaced), 1,600 (submerged)
Speed:
  • 15.7 knots (29.1 km/h) (surfaced)
  • 8.6 knots (15.9 km/h) (submerged)
Range:
  • 5,500 nautical miles (10,200 km) at 10 knots (19 km/h) (surfaced)
  • 80 nautical miles (150 km) at 5.7 knots (10.6 km/h) (submerged)
Test depth: 60 m (200 ft)
Complement: 48
Armament:

History

Ro-60 was laid down on 5 December 1921 at the Kobe Shipyard of Mitsubishi Heavy Industries, launched on 22 December 1922, and completed on 17 September 1923.[1] She was attached to the Sasebo Naval District and assigned to Submarine Division 26 on 9 February 1924.[1][2]

gollark: Alternatively, I can just make the adding-to-nickname-mapping bit happen at exactly the same time as the checking-if-nickname-exists bit but that would be really annoying.
gollark: Another would be very aggressive locking or something.
gollark: One possible way to fix this would be to have a central "broker" task which receives all state-updating commands ever and maintains stateful state, but this would be annoying too unless I can give everything else read access to it, and actually getting responses back would probably be irritating.
gollark: i.e. two people try and register with the same nick at exactly the same time, and then it has two people with the same nick because each time it checks it hasn't been written yet, and then everything breaks horribly.
gollark: But then I realized "OH APIOFORMS, that is probably vulnerable to weird race conditions".

References
  1. Hackett, Bob; Kingsepp, Sander (2012). "Sensuikan: IJN Submarine RO-60: Tabular Record of Movement". combinedfleet.com. Retrieved 5 November 2019.
  2. Niehorster, Leo; Alsleben, Al; Yoda, Tadashi; Donahoo, Jeff. "RO-Boats (2nd Class Submarines)". Imperial Japanese Armed Forces.

Bibliography
  • "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
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