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

Japanese submarine I-46

Type C submarine

Displacement
2,554 long tons (2,595 t)
Length
109.3 m (358.6 ft)
Beam
9.1 m (29.9 ft)
Speed
23.5 knots (43.5 km/h, 27 mph)
Main gun
140 mm (5.5 in)

Service

  1. Imperial Japanese Navy as Submarine No. 37629 February 1944 — 10 March 1945376 days of the war
Type C submarine Particulars
Name
I-46
Builder
Sasebo Naval Arsenal, Sasebo, Japan
Laid down
21 November 1942
Launched
3 June 1943
Commissioned
29 February 1944
Struck
10 March 1945
Fate
Missing October 1944 (see text) (1944)
Status
Unknown

Specifications

Displacement, surfaced
2,554 long tons (2,595 t)
Displacement, submerged
3,564 long tons (3,621 t)
Length
109.3 m (358.6 ft) OA
Beam
9.1 m (29.9 ft)
Draught
5.35 m (17.6 ft)
Speed
23.5 knots (43.5 km/h, 27 mph)
Range
14,000 nmi (25,928 km)
Main gun
140 mm (5.5 in)

I-46 was a Type C submarine built for the Imperial Japanese Navy. Her keel was laid at Sasebo Naval Arsenal, Sasebo, Japan on 21 November 1942. She entered service on 29 February 1944, having been launched on 3 June 1943.

The class followed the Junsen Type B and was succeeded by the Type D / Sen'yu-Dai Type.

The boat displaced 2,554 long tons surfaced and 3,564 long tons submerged. She measured 109.3 m (359 ft) long with a beam of 9.1 m (30 ft). Her designed speed was 23.5 knots.

Her main battery was one 140 mm (5.5 in) guns. Her machinery developed 12,400 bhp.

She was in commission for 376 days of the Second World War. She was struck from the register on 10 March 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
  • 1 × diesel engine, 751 tons fuel
  • 1 × electric motor
Power
  • 12400 bhp (diesel)
  • 2000 hp (electric motor)
Armament
  • 8 × bow 533 mm torpedo tubes
  • 1 × 14 cm deck gun
  • 2 × single or twin 25 mm Type 96 anti-aircraft guns

Sister ships

Sources