Recognition Guide Warships of the Second World War
Imperial Japanese Navy — Submarine

Japanese submarine Ro-50

Kaichū type submarine (K6 subclass)

Japanese submarine Ro-50
Unknown author — 写真日本の軍艦第12巻p218 — Public domain — Wikimedia Commons Plate Japanese Submarine RO-50(CHU-class or KAICHU-class type-VII).

Service

  1. Imperial Japanese Navy as Submarine No. 39131 July 1944 — September 1945401 days of the war
Kaichū type submarine (K6 subclass) Particulars
Name
Ro-50
Builder
Mitsui Zosensho, Tamano, Japan
Laid down
18 February 1943
Launched
27 November 1943
Commissioned
31 July 1944
Fate
Surrendered September 1945
Stricken 30 November 1945
Scuttled 1 April 1946 (1945)
Status
Wreck

Specifications

Displacement, surfaced
1,115 long tons (1,133 t)
Displacement, submerged
1,447 long tons (1,470 t)
Length
80.5 m (264.1 ft) OA
Beam
7 m (23 ft)
Draught
4.07 m (13.4 ft)
Speed
19.8 knots (36.6 km/h, 22.7 mph)
Range
5,000 nmi (9,260 km)
Main gun
76 mm (3 in)

Ro-50 was a submarine of the Kaichū type submarine (K6 subclass) built for the Imperial Japanese Navy. Her keel was laid at Mitsui Zosensho, Tamano, Japan on 18 February 1943. Launched on 27 November 1943, she entered service on 31 July 1944.

The boat displaced 1,115 long tons surfaced and 1,447 long tons submerged. She measured 80.5 m (264 ft) long with a beam of 7 m (23 ft). Her designed speed was 19.8 knots.

Her main battery was one 76 mm (3 in) guns. Her machinery developed 4,200 bhp.

She was in commission for 401 days of the Second World War.

She was scuttled in September 1945, at 8°01′N 136°37′E. The wreck survives.

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
  • 1 × diesel engine
  • 1 × electric motor
Power
  • 4200 bhp (diesel)
  • 1200 hp (electric motor)
Armament
  • 4 × bow 533 mm torpedo tubes
  • 1 × 76.2 mm L/40 anti-aircraft gun
  • 2 × single 25 mm AA guns

Sister ships

Sources