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

Japanese submarine I-366

Type D1 submarine

Displacement
1,440 long tons (1,463 t)
Length
73.5 m (241.1 ft)
Beam
8.9 m (29.2 ft)
Speed
13 knots (24.1 km/h, 15 mph)
Complement
55
Main gun
140 mm (5.5 in)

Service

  1. Imperial Japanese Navy as Submarine No. 54663 August 1944 — September 1945395 days of the war
Type D1 submarine Particulars
Name
I-366
Builder
Kure Naval Arsenal, Kure, Japan
Laid down
26 August 1943
Launched
9 March 1944
Commissioned
3 August 1944
Fate
Surrendered September 1945
Stricken 30 November 1945
Scuttled 1 April 1946 (1945)
Status
Wreck

Specifications

Displacement, surfaced
1,440 long tons (1,463 t)
Displacement, submerged
2,215 long tons (2,251 t)
Length
73.5 m (241.1 ft) OA
Beam
8.9 m (29.2 ft)
Draught
4.76 m (15.6 ft)
Speed
13 knots (24.1 km/h, 15 mph)
Range
15,000 nmi (27,780 km)
Complement
55
Main gun
140 mm (5.5 in)

I-366 was a Type D1 submarine in service with the Imperial Japanese Navy. Her keel was laid at Kure Naval Arsenal, Kure, Japan on 26 August 1943. She entered service on 3 August 1944, having been launched on 9 March 1944.

The boat displaced 1,440 long tons surfaced and 2,215 long tons submerged. She measured 73.5 m (241 ft) long with a beam of 8.9 m (29 ft). Her designed speed was 13 knots, and she carried a complement of 55.

Her main battery was one 140 mm (5.5 in) guns.

She was in commission for 395 days of the Second World War.

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 × Kampon Mk.23B Model 8 diesels
  • 1,850 bhp surfaced
  • 1,200 shp submerged
  • 2 shafts
Armament
  • 1 × 14 cm/40 11th Year Type naval gun (removed March–May 1945)
  • 2 × Type 96 25mm AA guns
  • 5 x Kaiten suicide attack torpedoes (added March–May 1945)

Sister ships

Sources