Ha-101-class submarine

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Japanese submarines Ha-105 Ha-106 and Ha-109 in 1945.jpg
(left to right) Ibuki, Ha-105, Ha-106 and Ha-109
Class overview
Name: Ha-101 class submarine
Builders: Kawasaki Shipbuilding
Mitsubishi Heavy Industries
Operators: Naval Ensign of Japan.svg Imperial Japanese Navy
Cost: 2,135,000 JPY[1]
Built: 1944–1945
In commission: 1944–1945
Planned: 12
Completed: 10
Retired: 10
General characteristics
Type: Transport submarine
Displacement: 370 long tons (376 t) surfaced
493 long tons (501 t) submerged
Length: 44.50 m (146 ft 0 in) overall
42.20 m (138 ft 5 in) waterline
Beam: 6.10 m (20 ft 0 in)
Draft: 4.04 m (13 ft 3 in)
Propulsion: 1 × intermediate diesel
400 bhp surfaced
150 shp submerged
single shaft
Speed: 10 knots (19 km/h) surfaced
5 knots (9.3 km/h) submerged
Range: 3,000 nmi (5,600 km) at 10 knots (19 km/h) surfaced
46 nmi (85 km) at 2.3 knots (4.3 km/h) submerged
Test depth: 100 m (330 ft)
Capacity: As built
60 tons freight
Ha-101, Ha-102, Ha-103, Ha-104 and Ha-105 in July 1945[2]
60 tons gasoline
Complement: 21
Armament: 1 × Type 96 25mm AA gun

The Ha-101 class submarine (波百一型潜水艦 Ha Hyakuichi-gata Sensuikan?) was a transport submarine of the Imperial Japanese Navy (IJN), serving during late World War II. The IJN planned to build 12 boats, but only 10 vessels were completed by the end of the war. The IJN called these submarines Sen'yu-Kogata (潜輸小型 Sensuikan Yusō-Kogata, Submarine Transport-Small Type?). Several boats were converted to tankers or mother ships for the Kō-hyōteki model D "Kōryū" (甲標的丁型 蛟龍?) midget submarines.

Planned construction[edit]

Project number S57. In February 1944, the IJN planned a small-size transport submarine, the IJA planned the Maru Yu.

Boats[edit]

Boat # Name Builder Laid down Launched Completed Decommissioned Fate
4601 Ha-101 [3] Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
08-06-1944 22-08-1944 22-11-1944 15-09-1945 Converted to a tanker submarine in June 1945;[2] scuttled off Simizu City October 1945
4602 Ha-102 Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
08-06-1944 22-08-1944 06-12-1944 15-09-1945 Converted to a tanker submarine in June 1945; scuttled off Simizu City October 1945
4603 Ha-103 Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
29-06-1944 21-10-1944 03-02-1945 30-11-1945 Converted to a radar picket submarine April 1945; re-converted to a tanker submarine in June 1945; scuttled off the Gotō Islands 01-04-1946
4604 Ha-104 Kawasaki-Kōbe Shipyard 01-07-1944 30-09-1944 01-12-1944 15-09-1945 Converted to a tanker submarine June 1945; scuttled off Simizu City October 1945
4605 Ha-105 Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
29-06-1944 31-10-1944 19-02-1945 30-11-1945 Converted to a radar picket submarine in March or April 1945; re-converted to a tanker submarine in June 1945; scuttled off the Gotō Islands 01-04-1946
4606 Ha-106 Mitsubishi-Kōbe Shipyard 01-07-1944 30-10-1944 15-12-1944 30-11-1945 Converted to Kōryū mother ship June 1945; scuttled off the Gotō Islands 01-04-1946
4607 Ha-107 Mitsubishi-Kōbe Shipyard 01-08-1944 20-12-1944 20-03-1945 30-11-1945 Converted to Kōryū mother ship June 1945; scuttled off the Gotō Islands 01-04-1946
4608 Ha-108 Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
05-09-1944 28-12-1944 06-05-1945 30-11-1945 Converted to Kōryū mother ship June 1945; scuttled off the Gotō Islands 01-04-1946
4609 Ha-109 Mitsubishi-Kōbe Shipyard 01-08-1944 10-01-1945 10-03-1945 30-11-1945 Converted to Kairyū's tender July 1945; scuttled off the Gotō Islands 01-04-1946
4610 Ha-110 Kawasaki-Senshū Shipyard,
Kawasaki-Kōbe Shipyard
05-09-1944 12-01-1945 95% complete; scuttled in the Kii Channel 15-04-1946
4611 Ha-111 Mitsubishi-Kōbe Shipyard 16-11-1944 02-03-1945 13-07-1945 30-11-1945 scuttled off the Gotō Islands 01-04-1946
4612 Ha-112 Mitsubishi-Kōbe Shipyard 16-11-1944 15-04-1945 95% complete; scuttled in the Kii Channel 15-04-1946



See also[edit]

Footnotes[edit]

  1. ^ Senshi Sōsho Vol.88 (1975), p.96
  2. ^ a b Senshi Sōsho Vol.88 (1975), p.272–273
  3. ^ 波号第101潜水艦 (Ha-Gō Dai-101 Sensuikan?). The same shall apply hereinafter.

Bibliography[edit]

  • "Rekishi Gunzō". , History of Pacific War Extra, "Perfect guide, The submarines of the Imperial Japanese Forces", Gakken (Japan), March 2005, ISBN 4-05-603890-2
  • Ships of the World special issue Vol.37, History of Japanese Submarines, "Kaijinsha". , (Japan), August 1993
  • The Maru Special, Japanese Naval Vessels No.43 Japanese Submarines III, Ushio Shobō (Japan), September 1980, Book code 68343-43
  • The Maru Special, Japanese Naval Vessels No.132 Japanese Submarines I "Revised edition", Ushio Shobō (Japan), February 1988, Book code 68344-36
  • Senshi Sōsho Vol.88, Naval armaments and war preparation (2), "And after the outbreak of war", Asagumo Simbun (Japan), October 1975