Japanese submarine Ro-57
- Displacement
- 889 long tons (903 t)
- Length
- 72.89 m (239.1 ft)
- Beam
- 7.16 m (23.5 ft)
- Speed
- 17.1 knots (31.7 km/h, 19.7 mph)
- Main gun
- 76 mm (3 in)
Service
- as Submarine No. 4630 July 1922 — 1 May 19452,069 days of the war
- Name
- Ro-57
- Builder
- Mitsubishi, Kobe, Japan
- Laid down
- 20 November 1920
- Launched
- 3 December 1921
- Commissioned
- 30 July 1922
- Decommissioned
- 1 November 1938
- Recommissioned
- 1 April 1939
- Struck
- 1 May 1945
- Fate
- Hulked 1 May 1945
Scrapped 1946 (1945) - Status
- Scrapped
Specifications
- Displacement, surfaced
- 889 long tons (903 t)
- Displacement, submerged
- 1,103 long tons (1,121 t)
- Length
- 72.89 m (239.1 ft) OA
- Beam
- 7.16 m (23.5 ft)
- Draught
- 3.96 m (13 ft)
- Speed
- 17.1 knots (31.7 km/h, 19.7 mph)
- Range
- 5,500 nmi (10,186 km)
- Main gun
- 76 mm (3 in)
Ro-57 was a submarine of the Japanese Type L submarine (L3 subclass) of the Imperial Japanese Navy. Her keel was laid at Mitsubishi, Kobe, Japan on 20 November 1920. Launched on 3 December 1921, she entered service on 30 July 1922.
The boat displaced 889 long tons surfaced and 1,103 long tons submerged. She measured 72.9 m (239 ft) long with a beam of 7.2 m (23 ft). Her designed speed was 17.1 knots.
Her main battery was one 76 mm (3 in) guns. Her machinery developed 2,400 bhp.
She was in commission for 2,069 days of the Second World War. She was decommissioned on 1 November 1938. She recommissioned on 1 April 1939. She was struck from the register on 1 May 1945.
She was broken up for scrap on 1 May 1945.
Written from the harvested record. Every figure above is sourced; the wording is this site's own.
Armament and machinery
Armament and machinery
- Propulsion
- Diesel-electric
- 2 × Vickers diesel engines, 75 tons fuel
- 2 × electric motor
- 2 x shafts
- Power
- 2400 bhp (diesel)
- 1600 shp (electric motor)
- Armament
- 4 × bow 533 mm torpedo tubes
- 8 x 6th Year Type torpedoes
- 1 × 76.2 mm gun
- 1 x 6.5 mm machine gun
Sister ships
Sources
- Facts harvested from Japanese submarine Ro-57 on Wikipedia. Figures only — no wording is taken from it.