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

Japanese submarine Ro-63

Type L4 (Ro-60-class) submarine

Japanese submarine Ro-63
Unknown author — Imperial Japanese navy photograph archive — Public domain — Wikimedia Commons Plate Japanese submarine RO-63 on sea trails

Service

  1. Imperial Japanese Navy as Submarine No. 8420 December 1924 — September 19452,193 days of the war
Type L4 (Ro-60-class) submarine Particulars
Name
Ro-63
Builder
Mitsubishi, Kobe, Japan
Laid down
2 April 1923
Launched
24 January 1924
Commissioned
20 December 1924
Decommissioned
10 March 1929
Recommissioned
29 June 1929
Fate
Surrendered September 1945
Stricken 20 November 1945
Scuttled May 1946 (1945)
Status
Wreck

Specifications

Displacement, submerged
1,301 long tons (1,322 t)
Length
78.39 m (257.2 ft)
Beam
7.41 m (24.3 ft)
Draught
3.96 m (13 ft)
Speed
15.7 knots (29.1 km/h, 18.1 mph)
Range
5,500 nmi (10,186 km)
Complement
48
Main gun
76 mm (3 in)

Ro-63 was a Type L4 (Ro-60-class) submarine, operated by the Imperial Japanese Navy. Mitsubishi, Kobe, Japan laid her keel on 2 April 1923. She entered service on 20 December 1924, having been launched on 24 January 1924.

The boat displaced 1,301 long tons submerged. She measured 78.4 m (257 ft) long with a beam of 7.4 m (24 ft). Her designed speed was 15.7 knots, and she carried a complement of 48.

Her main battery was one 76 mm (3 in) guns.

She was in commission for 2,193 days of the Second World War. She was decommissioned on 10 March 1929. She recommissioned on 29 June 1929.

She was scuttled in September 1945. 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
  • 2 × Vickers diesels, 2 shafts
  • 2,400 bhp (surfaced), 1,600 (submerged)
Armament
  • 6 × 533 mm torpedo tubes (6 × bow)
  • 12 × 6th Year Type torpedoes
  • 1 × 76.2 mm (3.00 in) L/40 naval gun
  • 1 × 6.5 mm machine gun

Sister ships

Sources

  • Facts harvested from Japanese submarine Ro-63 on Wikipedia. Figures only — no wording is taken from it.
  • Photograph: Unknown author — Imperial Japanese navy photograph archive — Public domain — Wikimedia Commons