Japanese submarine I-401
Service
- as I-4018 January 1945 — 15 September 1945237 days of the war
- Name
- I-401
- Builder
- Sasebo Naval Arsenal, Sasebo, Japan
- Laid down
- 26 April 1943
- Launched
- 11 March 1944
- Commissioned
- 8 January 1945
- Struck
- 15 September 1945
- Fate
- Surrendered 29 August 1945
Sunk as target 31 May 1946 (1945) - Status
- Wreck
Specifications
- Displacement, surfaced
- 5,223 long tons (5,307 t)
- Displacement, submerged
- 6,560 long tons (6,665 t)
- Length
- 122 m (400.3 ft)
- Beam
- 12 m (39.4 ft)
- Draught
- 7 m (23 ft)
- Speed
- 18.8 knots (34.7 km/h, 21.6 mph)
- Range
- 37,500 nmi (69,450 km)
- Complement
- 144
- Main gun
- 140 mm (5.5 in)
I-401 was a I-400-class submarine built for the Imperial Japanese Navy. Her keel was laid at Sasebo Naval Arsenal, Sasebo, Japan on 26 April 1943. Launched on 11 March 1944, she entered service on 8 January 1945.
Her class ran to three ships.
The boat displaced 5,223 long tons surfaced and 6,560 long tons submerged. She measured 122 m (400 ft) long with a beam of 12 m (39 ft). Her designed speed was 18.8 knots, and she carried a complement of 144.
Her main battery was one 140 mm (5.5 in) guns. She carried three aircraft.
She was in commission for 237 days of the Second World War. She was struck from the register on 15 September 1945.
She was expended as a target on 29 August 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
- Diesel-electric
- 4 diesel engines, 7700 hp
- Electric motors, 2400 hp
- Armament
- 8 × 533 mm forward torpedo tubes
- 20 × Type 95 torpedoes
- 1 × 14 cm/40 11th Year Type naval gun
- 3 × 25 mm triple-mounted Type 96 autocannon (9 barrels total)
- 1 × single-mounted 25 mm Type 96 autocannon
- Aircraft
- 3 × Aichi M6A1 Seiran sea-planes
Sister ships
Sources
- Facts harvested from Japanese submarine I-401 on Wikipedia. Figures only — no wording is taken from it.
- Photograph: Unknown author — Public domain — Wikimedia Commons