Ha-101-class submarine

{{Infobox ship image

|Ship image= Japanese submarines Ha-105 Ha-106 and Ha-109 in 1945.jpg

|Ship caption=(left to right) Ibuki, Ha-105, Ha-106 and Ha-109

}}

{{Infobox ship class overview

|Name=Ha-101-class submarine

|Builders=*Kawasaki Shipbuilding

Mitsubishi Heavy Industries

|Operators={{navy|Empire of Japan}}

|Class before=

|Class after=

|Subclasses=

|Cost= 2,135,000 JPYSenshi Sōsho Vol.88 (1975), p.96

|Built range=1944–45

|In service range=

|In commission range=1944–45

|Total ships planned=12

|Total ships completed=10

|Total ships scrapped=10

}}

{{Infobox ship characteristics

|Hide header=

|Header caption=

|Ship type=Transport submarine

|Ship displacement=*{{Convert|429|LT|t|0|disp=flip|sp=us|abbr=on}} surfaced

{{Convert|493|LT|t|0|disp=flip|sp=us|abbr=on}} submerged

|Ship length={{convert|44.5|m|ftin|abbr=on}}

|Ship beam={{convert|6.1|m|ftin|abbr=on}}

|Ship draft={{convert|4.04|m|ftin|abbr=on}}

|Ship power=*{{convert|400|bhp|lk=in|abbr=on}} (diesels)

{{convert|150|hp|abbr=on}} (electric motor)

|Ship propulsion=*Diesel-electric

1 × diesel engines
1 × electric motor

|Ship speed=*{{convert|10|kn|lk=in}} surfaced

{{convert|5|kn}} submerged

|Ship range=*{{convert|3000|nmi|abbr=on|lk=in}} at {{convert|10|kn}} surfaced

{{convert|46|nmi|abbr=on}} at {{convert|2.3|kn}} submerged

|Ship capacity={{Convert|60|t|LT|0|sp=us}}

|Ship test depth={{convert|100|m|sp=us|0}}

|Ship complement=22

|Ship armament=1 × single Type 96 25 mm AT/AA Gun anti-aircraft gun

|Ship notes=

}}

The {{nihongo|Ha-101-class submarine|波百一型潜水艦|Ha-hyaku-ichi-gata Sensuikan}} was a transport submarine built for the Imperial Japanese Navy (IJN) during 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 {{nihongo|Sen'yu-Shō type submarine|潜輸小型潜水艦|Sen-Yu-Ko-gata sensuikan}}. The type name was shortened to {{nihongo|Yusō Sensuikan Ko-gata|輸送潜水艦小型|Transport Submarine-Small Type}}.The {{nihongo2|潜輸小}} read as "Sen'yu-Shō", but the {{nihongo2|潜輸小型}} read as "Sen'yu-Ko-gata" in Japanese.

Several boats were converted to tankers or mother ships for {{nihongo|Kō-hyōteki model D "Kōryū"|甲標的丁型蛟龍}} midget submarines.

Design and description

The Ha-101-class submarines were designed as small, cheap transport submarines to resupply isolated island garrisons. They displaced {{Convert|429|LT|t|0|disp=flip|sp=us}} surfaced and {{Convert|493|LT|t|0|disp=flip|sp=us}} submerged. The submarines were {{convert|44.5|m|ftin|sp=us}} long, had a beam of {{convert|6.1|m|ftin|sp=us}} and a draft of {{convert|4.04|m|ftin|sp=us}}. They were designed to carry {{Convert|60|t|LT|0|sp=us}} of cargo.Carpenter & Dorr, p. 140

For surface running, the boats were powered by a single {{convert|400|bhp|lk=in|0|adj=on}} diesel engine that drove one propeller shaft. When submerged the propeller was driven by a {{convert|140|hp|0|adj=on}} electric motor. They could reach {{convert|10|kn|lk=in}} on the surface and {{convert|5|kn}} underwater.Chesneau, p. 204 On the surface, the Ha-101s had a range of {{convert|3000|nmi|lk=in}} at {{convert|10|kn}}; submerged, they had a range of {{convert|46|nmi|abbr=on}} at {{convert|2.3|kn}}. The boats were armed a single mount for a Type 96 25 mm AT/AA Gun anti-aircraft gun.Bagnasco, p. 195

Planned construction

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

Boats

class="wikitable"

| width="5%" | Boat #

| width="5%" | Name

| width="15%" | Builder

| width="7%" bgcolor= | Laid down

| width="7%" bgcolor= | Launched

| width="7%" bgcolor= | Completed

| width="7%" bgcolor= | Decommissioned

| width="25%" bgcolor= | Fate

4601

| {{ship|Japanese submarine|Ha-101

2}}{{nihongo|波号第101潜水艦|Ha-Gō Dai-101 Sensuikan}}. The same shall apply hereinafter.

| 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;Senshi Sōsho Vol.88 (1975), p.272–273 scuttled off Shimizu City October 1945

4602

| {{ship|Japanese submarine|Ha-102

2}}

| 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 Shimizu City October 1945

4603

| {{ship|Japanese submarine|Ha-103

2}}

| 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

| {{ship|Japanese submarine|Ha-104

2}}

| Kawasaki-Kōbe Shipyard

| 01-07-1944

| 30-09-1944

| 01-12-1944

| 15-09-1945

| Converted to a tanker submarine June 1945; scuttled off Shimizu City October 1945

4605

| {{ship|Japanese submarine|Ha-105

2}}

| 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

| {{ship|Japanese submarine|Ha-106

2}}

| 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

| {{ship|Japanese submarine|Ha-107

2}}

| 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

| {{ship|Japanese submarine|Ha-108

2}}

| 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

| {{ship|Japanese submarine|Ha-109

2}}

| Mitsubishi-Kōbe Shipyard

| 01-08-1944

| 10-01-1945

| 10-03-1945

| 30-11-1945

| Converted to {{sclass|Kairyu|submarine|1}}'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

| {{ship|Japanese submarine|Ha-111

2}}

| 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

Footnotes

Bibliography

{{cite book|last=Bagnasco |first=Erminio |title=Submarines of World War Two |year=1977 |publisher=Naval Institute Press |location=Annapolis, Maryland |isbn=0-87021-962-6}}
{{cite book|last1=Carpenter|first1=Dorr B.|last2=Polmar|first2=Norman|title=Submarines of the Imperial Japanese Navy 1904–1945|year=1986|publisher=Conway Maritime Press|location=London|isbn=0-85177-396-6|name-list-style=amp}}
{{cite book|title=Conway's All the World's Fighting Ships 1922–1946|editor1-last=Chesneau|editor1-first=Roger|publisher=Conway Maritime Press|location=Greenwich, UK|year=1980|isbn=0-85177-146-7}}
{{cite web |url=http://rekigun.net/ |title=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, {{cite web |url=http://www.ships-net.co.jp/ |title=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

Category:Submarine classes

Category:Submarines of the Imperial Japanese Navy

Category:Merchant submarines

Ha-101-class submarine

Design and description

Planned construction

Boats

See also

Footnotes

Bibliography