Ha-101-class submarine
 (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: |
 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-hyaku-ichi-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-Shō type submarine (潜輸小型潜水艦 Sen-Yu-Ko-gata sensuikan). The type name, was shortened to Yusō Sensuikan Ko-gata (輸送潜水艦小型 Transport Submarine-Small Type).[3]
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
Project number S57. In February 1944, the IJN planned a small-size transport submarine, the IJA planned the Maru Yu.
Boats
| Boat # | Name | Builder | Laid down | Launched | Completed | Decommissioned | Fate |
| 4601 | Ha-101[4] | 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 Kairyu-class submarine'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
- Type 4 Ka-Tsu
- Imperial Japanese Army Railways and Shipping Section
- Type 3 submergence transport vehicle, Yu II type
Footnotes
- ↑ Senshi Sōsho Vol.88 (1975), p.96
- ↑ 2.0 2.1 Senshi Sōsho Vol.88 (1975), p.272–273
- ↑ The 潜輸小 read as "Sen'yu-Shō", but the 潜輸小型 read as "Sen'yu-Ko-gata" in Japanese.
- ↑ 波号第101潜水艦 (Ha-Gō Dai-101 Sensuikan). The same shall apply hereinafter.
Bibliography
- "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
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