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{|{{Infobox Ship Begin}}
{|{{Infobox ship begin}}
{{Infobox Ship Class Overview
{{Infobox ship class overview
|Name=''Type-B'' submarines
|Name=''Type-B'' submarines<br/>• ''Type-B'' (''I-15'' class)<br/>• ''Type-B Modified 1'' (''I-40'' class)<br/>• ''Type-B Modified 2'' (''I-54'' class)|Builders=[[Kure Naval Arsenal]]<br/>[[Sasebo Naval Arsenal]]<br/>[[Yokosuka Naval Arsenal]]<br/>[[Kawasaki Shipbuilding Corporation|Kawasaki Shipbuilding]]<br/>[[Mitsubishi Heavy Industries]]
|Builders=*[[Kure Naval Arsenal]]
*[[Sasebo Naval Arsenal]]
*[[Yokosuka Naval Arsenal]]
*[[Kawasaki Shipbuilding Corporation|Kawasaki Shipbuilding]]
*[[Mitsubishi Heavy Industries]]
|Operators=[[Image:Naval Ensign of Japan.svg|20px]] [[Imperial Japanese Navy]]
|Operators=[[Image:Naval Ensign of Japan.svg|20px]] [[Imperial Japanese Navy]]
|Class before=
|Class before=[[Junsen type submarine]]
|Class after=
|Class after=
|Subclasses=*[[Type B1 submarine|''Type-B'' (''I-15'' class)]]
|Subclasses=
*''Type-B Modified 1'' (''I-40'' class)
*''Type-B Modified 2'' (''I-54'' class)
|Cost=
|Cost=
|Built range=1938-1944
|Built range=1938-1944
Line 22: Line 29:
|}
|}


The {{nihongo|'''Cruiser submarine ''Type-B'''''|巡潜乙型|Junsen Otsu-gata}} was a class of submarine in the Imperial Japanese Navy (IJN) which served during [[World War II]]. The ''Type-B'' submarines were similar to the ''Type-A'' apart from not having the headquarters installation.
The {{nihongo|'''Cruiser submarine ''Type-B'''''|巡潜乙型潜水艦|Junsen Otsu-gata sensuikan}} was a class of submarine in the [[Imperial Japanese Navy]] (IJN) which served during [[World War II]]. The ''Type-B'' submarines were similar to the [[Type A submarine|''Type-A'']] apart from not having the headquarters installation.


==Class variants==
==Class variants==
The ''Type-B'' submarines were divided into four classes:
The ''Type-B'' submarines were divided into four classes:
* {{nihongo|'''''Type-B''''' |乙型|Otsu-gata}}, the ''I-15'' class
* {{nihongo|'''''Type-B''''' |乙型（[[:ja:伊十五型潜水艦|伊十五型]]）|Otsu-gata, ''I-15''-class}}
* {{nihongo|'''''Type-B Mod.1'''''|乙型改一|Otsu-gata Kai-1}}, the ''I-40'' class
* {{nihongo|'''''Type-B Mod.1'''''|乙型改一（[[:ja:伊四十型潜水艦|伊四十型]]）|Otsu-gata Kai-1, ''I-40''-class}}
* {{nihongo|'''''Type-B Mod.2'''''|乙型改二|Otsu-gata Kai-2}}, the ''I-54'' class
* {{nihongo|'''''Type-B Mod.2'''''|乙型改二（[[:ja:伊五十四型潜水艦|伊五十四型]]）|Otsu-gata Kai-2, ''I-54''-class}}
* {{nihongo|'''''V22A Type'''''|第5115号艦型|''5115th vessel'' class}}. The ''5115th vessel'' class submarines were not built and remained a design only.
* {{nihongo|'''''V22A Type'''''|[[:ja:伊十五型潜水艦|第5115号艦型]]|Dai-5115-Gō kan-gata, ''5115th vessel''-class}}. The ''5115th vessel''-class submarines were not built and remained a design only.


===''Type-B'' (''I-15'' class)===
===''Type-B'' (''I-15'' class)===
{{main|Type B1 submarine}}
{{main|Type B1 submarine}}
[[Image:I-15.jpg|thumb|left|200px|''I-15'' on 15 September 1940]]
[[Image:I-15.jpg|thumb|''I-15'' on 15 September 1940]]
Project number '''S37'''. Twenty boats were built between 1937 and 1944 under the [[3rd Naval Armaments Supplement Programme (Japan, 1937)|Maru 3 Programme]] (Boats 37 - 42) and [[4th Naval Armaments Supplement Programme (Japan, 1939)|Maru 4 Programme]] (Boats 139 - 152).
Project number '''S37'''. Twenty boats were built between 1937 and 1944 under the [[3rd Naval Armaments Supplement Programme (Japan, 1937)|Maru 3 Programme]] (Boats 37 - 42) and [[4th Naval Armaments Supplement Programme (Japan, 1939)|Maru 4 Programme]] (Boats 139 - 152).


*Boats in class
{| class="wikitable"
{| class="wikitable"
|-
| width="4%" | '''Boat No.'''
|+Boats in class
| width="3%" | '''Boat'''
|-
| width="10%" | '''Builder'''
| width="5%" | '''Laid down'''
| style="width:4%;"| '''Boat No.'''
| width="5%" | '''Launched'''
| style="width:3%;"| '''Boat'''
| width="5%" | '''Completed'''
| style="width:10%;"| '''Builder'''
| width="25%" | '''Results'''
| style="width:5%;"| '''Laid down'''
| width="20%" | '''Fate'''
| style="width:5%;"| '''Launched'''
| style="width:5%;"| '''Completed'''
| style="width:20%;"| '''Fate'''
|-
|-
| 37
| 37
| ''[[Japanese submarine I-15|I-15]]'' <ref>{{nihongo|伊号第15潜水艦|''I-Gō Dai-15 Sensuikan''}}. The same shall apply hereinafter.</ref>
| {{ship|Japanese submarine|I-15||2}} <ref group=note>{{nihongo|伊号第15潜水艦|I-Gō Dai-15 Sensuikan}}.</ref>
| [[Kure Naval Arsenal]]
| [[Kure Naval Arsenal]]
| 25-01-1938
| 25 January 1938
| 07-03-1939
| 7 March 1939
| 30-09-1940
| 30 September 1940
| Sunk by {{USS|Southard|DD-207|6}} near [[Makira|San Cristóbal]] on 10 November 1942.
|
| Probably lost in an accident or sunk by enemy attack near [[Guadalcanal]], after 03-11-1942
|-
|-
| 38
| 38
| ''[[Japanese submarine I-17|I-17]]''
| {{ship|Japanese submarine|I-17||2}}
| [[Yokosuka Naval Arsenal]]
| [[Yokosuka Naval Arsenal]]
| 18 April 1938
| 25-08-1937
| 19 July 1939
| 12-11-1938
| 31-01-1941
| 24 January 1941
| Sunk by {{ship|HMNZS|Tui|T234|6}} and maritime patrol aircraft at [[Nouméa]] {{coord|23|26|S|166|54|E}} on 19 August 1943.
| Sank SS ''Samoa'' on 18-12-1941<br/>Sank {{SS|Emidio}} on 21-12-1941<br/>Damaged SS ''Larry Doheny'' on 23-12-1941<br/>Sank Panamanian merchant ship ''Stanvac Manila'' on 23-05-1943
| Sunk by [[HMNZS Tui (T234)|HMNZS ''Tui'']] and maritime patrol aircraft at [[Nouméa]] {{coord|23|26|S|166|54|E}} on 19-08-1943
|-
|-
| 39
| 39
| ''[[Japanese submarine I-19|I-19]]''
| {{ship|Japanese submarine|I-19||2}}
| Mitsubishi, Kōbe Shipyard
| Mitsubishi, Kōbe Shipyard
| 15-03-1938
| 15 March 1938
| 16-09-1939
| 16 September 1939
| 28-04-1941
| 28 April 1941
| Sunk by {{USS|Radford|DD-446|6}} in the [[Gilbert Islands]] on 25 November 1943.
| Sank SS ''H. M. Storey'' on 22-12-1941<br/>Damaged SS ''Absoroka'' on 25-12-1941<br/>Sank [[USS Wasp (CV-7)|USS ''Wasp'']] on 15-09-1942<br/>Damaged [[USS North Carolina (BB-55)|USS ''North Carolina'']] on 15-09-1942<br/>Damaged [[USS O'Brien (DD-415)|USS ''O'Brien'']] on 15-09-1942<br/>Sank SS ''Phoebe A. Hearst'' on 30-04-1943<br/>Damaged {{SS|William Williams}} on 02-05-1943<br/>Sank SS ''William K. Vanderbilt'' on 16-05-1943<br/>Sank SS ''M. H. DeYoung'' on 14-08-1943
| Sunk by [[USS Radford (DD-446)|USS ''Radford'']] in the [[Gilbert Islands]] on 25-11-1943
|-
|-
| 40
| 40
| ''[[Japanese submarine I-21|I-21]]''
| {{ship|Japanese submarine|I-21||2}}
| Kawasaki, Kōbe Shipyard
| Kawasaki, Kōbe Shipyard
| 07-01-1939
| 7 January 1939
| 24-02-1940
| 24 February 1940
| 15-07-1941
| 15 July 1941
| Missing near [[Tarawa]] after 27 November 1943. Possibly sunk by aircraft from {{USS|Chenango|CVE-28|6}} on 29 November 1943.
| Damaged SS ''Montebello'' on 23-12-1941<br/>Damaged SS ''Idaho'' on 23-12-1941<br/>Sank SS ''John Adams'' on 05-05-1942<br/>Sank Greek merchant vessel ''Chloe'' on 04-05-1942<br/>Sank Panamanian merchantman ''Guatemala'' on 11-06-1942<br/>Sank [[USS Porter (DD-356)|USS ''Porter'']] on 26-10-1942<br/>Damaged SS ''Edgar Allan Poe'' on 08-11-1942<br/>Sank Australian merchant ship ''Kalingo'' on 17-01-1943<br/>Sank SS ''Peter H. Burnett'' on 22-01-1943<br/>Sank RMS ''Iron Knight'' on 08-02-1943<br/>Sank SS ''Star King'' on 10-02-1943<br/>Sank SS ''Cape San Juan'' on 21-11-1943
| Probably lost in an accident or sunk by enemy attack near [[Tarawa]], after 27-11-1943
|-
|-
| 41
| 41
| ''[[Japanese submarine I-23|I-23]]''
| {{ship|Japanese submarine|I-23||2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 08-12-1938
| 8 December 1938
| 24-11-1939
| 24 November 1939
| 27-09-1941
| 27 September 1941
| Missing near the [[Hawaiian Islands]] after 24 February 1942, most likely due to a diving accident.
| Damaged SS ''Agwiworld'' on 21-12-1941<br/>Damaged SS ''Dorothy Philips'' on 24-12-1941
| Probably lost in an accident or sunk by enemy attack near the [[Hawaiian Islands]], after 14-02-1942
|-
|-
| 42
| 42
| ''[[Japanese submarine I-25|I-25]]''
| {{ship|Japanese submarine|I-25||2}}
| Mitsubishi, Kōbe Shipyard
| Mitsubishi, Kōbe Shipyard
| 03-02-1939
| 3 February 1939
| 08-06-1940
| 8 June 1940
| 15-10-1941
| 15 October 1941
| Missing near [[Espiritu Santo]] after 23 August 1943. Possibly sunk by {{USS|Patterson|DD-392|6}} on 25 August 1943.
| Sank USS ''Emidio'' on 20-12-1941<br/>Damaged SS ''Absaroka'' on 24-12-1941<br/>Damaged SS ''Connecticut'' on 27-12-1941<br/>Sank RMS ''Fort Camosun'' on 21-06-1942<br/>Sank ''Camden'' on 04-10-1942<br/>Sank ''Larry Doheny'' on 07-10-1942<br/>Sank [[USSR|Soviet]] submarine ''L16'' on 12-10-1942<br/>Sank SS ''H. M. Storey'' on 18-05-1943
| Probably lost in an accident or sunk by enemy attack near [[Espiritu Santo]], after 23-08-1943
|-
|-
| 43
| 43
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|
|
|
|
| The dummy for the naval budget of the {{sclass|Yamato|battleship}}.
|
| The dummy for the naval budget of the [[Yamato class battleship|''Yamato'' class battleships]].
|-
|-
| 139
| 139
| [[Japanese submarine I-26|''I-26'']]
| {{ship|Japanese submarine|I-26||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 07-06-1939
| 7 June 1939
| 10-04-1940
| 10 April 1940
| 06-11-1941
| 6 November 1941
| Missing east of the [[Philippines]] after 25 October 1944. Possibly sunk by {{USS|Richard M. Rowell|DE-403|6}} on 26 October 1944.
| Sank USS ''Cynthia Olson'' on 08-12-1941<br/>Sank SS ''Coast Trader'' on 08-06-1942<br/>Damaged [[USS Saratoga (CV-3)|USS ''Saratoga'']] on 31-08-1942<br/>Sank [[USS Juneau (CL-52)|USS ''Juneau'']] on 13-11-1942<br/>Sank Yugoslav merchant ship ''Recina'' on 11-04-1943<br/>Sank Australian merchant vessel ''Kowarra'' on 24-04-1943<br/>Damaged SS ''General Robert F. Hoke'' on 28-12-1943<br/>Sank RMS ''Tornus'' on 31-12-1943<br/>Sank SS ''Albert Gallatin'' on 01-01-1944<br/>Sank SS ''H. D. Collier'' on 13-03-1944<br/>Sank Norwegian merchant ship ''Grena'' on 21-03-1944<br/>Damaged [[USS Santee (CVE-29)|USS ''Santee'']] on 25-10-1944 (probably wrong since she was sunk the day before)<ref name="tag1">This result is estimated with a thing by ''I-56'' in many Japanese documents. However, her actions cannot prove it.</ref><br/>Sank SS ''Richard Hovey'' on 29-03-1944
| Probably lost in an accident or sunk by enemy attack east of the [[Philippines]], after 27-10-1944
|-
|-
| 140
| 140
| ''[[Japanese submarine I-27|I-27]]''
| {{ship|Japanese submarine|I-27||2}}
| [[Sasebo Naval Arsenal]]
| [[Sasebo Naval Arsenal]]
| 05-07-1939
| 5 July 1939
| 06-06-1940
| 6 June 1940
| 24-02-1942
| 24 February 1942
| Sunk by {{ship|HMS|Paladin|G69|6}} and {{ship|HMS|Petard|G56|6}} in the [[Maldives]] at {{coord|00|57|N|72|16|E}} on 12 February 1944.
| Sank Australian merchant ship ''Iron Crown'' on 04-05-1942<br/>Sank RMS ''Ocean Vintage'' on 10-22-1942<br/>Sank RMS ''Fort Mumford'' on 21-03-1943<br/>Sank Dutch merchantman ''Berakit'' on 07-05-1943<br/>Sank SS ''Montanan'' on 03-06-1943<br/>Sank RMS ''British Venture'' on 24-06-1943<br/>Sank Norwegian merchant ship ''Dah Pu'' on 28-06-1943<br/>Sank SS ''Alcoa Prospector'' on 05-07-1943<br/>Damaged SS ''Lyman Stewart'' on 07-09-1943<br/>Sank RMS ''Larchbank'' on 10-09-1943<br/>Sank RMS ''Sambo'' on 10-11-1943<br/>Sank RMS ''Sambridge'' on 18-11-1943<br/>Sank Greek merchant ship ''Athina Livanos'' on 29-11-1943<br/>Sank Greek merchant vessel ''Nitsa'' on 02-12-1943<br/>Damaged RMS ''Fort Camosun'' on 03-12-1943<br/>Sank HMS ''Khedive Ismail'' on 12-02-1944
| Sunk by [[HMS Paladin (G69)|HMS ''Paladin'']] and [[HMS Petard (G56)|HMS ''Petard'']] in the [[Maldives]] at {{coord|00|57|N|72|16|E}} on 12-02-1944
|-
|-
| 141
| 141
| ''[[Japanese submarine I-28|I-28]]''
| {{ship|Japanese submarine|I-28||2}}
| Mitsubishi, Kōbe Shipyard
| Mitsubishi, Kōbe Shipyard
| 25-09-1939
| 25 September 1939
| 17-12-1940
| 17 December 1940
| 06-02-1942
| 6 February 1942
| Sunk by {{ship|USS|Tautog|SS-199|6}} north of [[Rabaul]] at {{coord|06|30|N|152|00|E}} on 17 May 1942.
|
| Sunk by [[USS Tautog (SS-199)|USS ''Tautog'']] north of [[Rabaul]] at {{coord|06|30|N|152|00|E}} on 17-05-1942
|-
|-
| 142
| 142
| ''[[Japanese submarine I-29|I-29]]''
| {{ship|Japanese submarine|I-29||2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 20-09-1939
| 20 September 1939
| 29-09-1940
| 29 September 1940
| 27-02-1942
| 27 February 1942
| Sunk by {{ship|USS|Sawfish|SS-276|6}} south of [[Sabtang Island]] at {{coord|20|10|N|121|50|E}} on 26 July 1944.
| Sank RMS ''Gazcon'' on 02-09-1942<br/>Damaged RMS ''British Genius'' on 03-09-1942<br/>Sank RMS ''Haresfield'' on 10-09-1942<br/>Sank RMS ''Ocean Honour'' on 16-09-1942<br/>Sank USS ''Paul Luckenbach'' on 23-09-1942<br/>Sank RMS ''Tilawa'' on 23-11-1942<br/>Sank Norwegian merchant ship ''Belita'' on 03-12-1942<br/>Sank RMS ''Rahmani'' on 12-07-1943
| Sunk by [[USS Sawfish (SS-276)|USS ''Sawfish'']] south of [[Sabtang Island]] at {{coord|20|10|N|121|50|E}} on 26-07-1944
|-
|-
| 143
| 143
| ''[[Japanese submarine I-30|I-30]]''
| {{ship|Japanese submarine|I-30||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 07-06-1939
| 7 June 1939
| 17-09-1940
| 17 September 1940
| 28-02-1942
| 28 February 1942
| Sunk by a British mine at [[Singapore]] on 13 October 1942. Raised and scrapped between August 1959 and February 1960.
|
| Sunk by a mine at [[Singapore]] on 13-10-1942

|-
|-
| 144
| 144
| ''[[Japanese submarine I-31|I-31]]''
| {{ship|Japanese submarine|I-31||2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 06-12-1939
| 6 December 1939
| 13-03-1941
| 13 March 1941
| 30-05-1942
| 30 May 1942
| Sunk by {{ship|USS|Frazier|DD-607|6}} at [[Attu Island]] on 13 May 1943.
|
| Sunk by [[USS Farragut (DD-348)|USS ''Farragut'']] and [[USS Edwards (DD-619)|USS ''Edwards'']] at [[Attu Island]] on 14-05-1943
|-
|-
| 145
| 145
| ''[[Japanese submarine I-32|I-32]]''
| {{ship|Japanese submarine|I-32||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 20-01-1940
| 20 January 1940
| 17-12-1940
| 17 December 1940
| 26-04-1942
| 26 April 1942
| Sunk by {{ship|USS|Manlove|DE-36|6}} and USS ''PC-1135'' northeast of [[Wotje Atoll]] on 24 March 1943.
|
| Sunk by [[USS Manlove (DE-36)|USS ''Manlove'']] and USS ''PT-1135'' northeast of [[Wotje Atoll]] on 24-03-1943
|-
|-
| 146
| 146
| ''[[Japanese submarine I-33|I-33]]''
| {{ship|Japanese submarine|I-33||2}}
| Mitsubishi, Kōbe Shipyard
| Mitsubishi, Kōbe Shipyard
| 01-02-1940
| 21 February 1940
| 01-05-1941
| 1 May 1941
| 10-06-1942
| 10 June 1942
| Lost in an accident at [[Chuuk State|Truk]] on 26 September 1942. Salvaged and repaired starting 29 December 1943. Later, lost in another accident at [[:ja:伊予灘|Iyo Nada]] on 13 June 1944. Salvaged and scrapped starting 28 June 1953.
|
| Lost in an accident at [[Chuuk State|Truk]] on 26-09-1942. Salvaged and repaired starting 29-12-1942. Later, lost in another accident at [[:ja:伊予灘|Iyo Nada]] on 13-06-1944. Salvaged and scrapped starting 28-06-1953
|-
|-
| 147
| 147
| ''[[Japanese submarine I-34|I-34]]''
| {{ship|Japanese submarine|I-34||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 09-01-1941
| 9 January 1941
| 24-09-1941
| 24 September 1941
| 31-08-1942
| 31 August 1942
| Sunk by {{ship|HMS|Taurus|P399|6}} at [[Penang Island]] on 13 November 1943. Salvaged on 4 December 1962.
|
| Sunk by [[HMS Taurus (P399)|HMS ''Taurus'']] at [[Penang Island]] on 13-11-1943
|-
|-
| 148
| 148
| ''[[Japanese submarine I-35|I-35]]''
| {{ship|Japanese submarine|I-35||2}}
| Mitsubishi, Kōbe Shipyard
| Mitsubishi, Kōbe Shipyard
| 02-09-1940
| 2 September 1940
| 24-09-1941
| 24 September 1941
| 31-08-1942
| 31 August 1942
| Sunk by {{ship|USS|Meade|DD-602|6}} and {{ship|USS|Frazier|DD-607|6}} south of [[Tarawa]] on 22 November 1943.
|
| Sunk by [[USS Meade (DD-602)|USS ''Meade'']] and [[USS Frazier (DD-607)|USS ''Frazier'']] south of [[Tarawa]] on 22-11-1943
|-
|-
| 149
| 149
| ''[[Japanese submarine I-36|I-36]]''
| {{ship|Japanese submarine|I-36||2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 04-12-1940
| 4 December 1940
| 01-11-1941
| 1 November 1941
| 30-09-1942
| 30 September 1942
| Converted to a ''[[Kaiten]]'' mother ship on 1 September 1944. Decommissioned on 30 November 1945, blown up (along with ''Ha-106'') off the [[Gotō Islands]] on 1 April 1946 as part of Operation Road's End.
| Damaged [[USS Mazama (AE-9)|USS ''Mazama'']] on 09-01-1945 by ''Kaiten''<br/>Damaged [[List of United States Navy losses in World War II#Infantry landing craft|USS ''LCI(L)-600'']] on 09-01-1945 by ''Kaiten''<br/>Damaged [[USS Endymion (ARL-9)|USS ''Endymion'']] on 22-06-1945<br/>Damaged USS ''LST-513'' on 22-06-1945 (?)
| Converted to the ''[[Kaiten]]'' mother ship on 01-09-1944. Decommissioned on 30-11-1945, sunk as a target off [[Gotō Islands]] on 01-04-1946
|-
|-
| 150
| 150
| ''[[Japanese submarine I-37|I-37]]''
| {{ship|Japanese submarine|I-37||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 07-12-1940
| 7 December 1940
| 22-10-1941
| 22 October 1941
| 10-03-1943
| 10 March 1943
| Converted to a ''Kaiten'' mother ship on 9 September 1944. Sunk by {{ship|USS|Conklin|DE-439|6}} and {{ship|USS|McCoy Reynolds|DE-440|6}} north of [[Palau]], on 19 November 1944.
| Sank RMS ''San Ernesto'' on 16-03-1943<br/>Sank SS ''Henry Knox'' on 19-03-1943<br/>Sank Greek merchant ship ''Faneromeni'' on 23-10-1943<br/>Sank Norwegian merchant vessl ''Scotia'' on 27-11-1943<br/>Sank RMS ''British Chivalry'' on 22-02-1944<br/>Sank RMS ''Sutlej'' on 26-02-1944<br/>Sank RMS ''Ascot'' on 29-02-1944
| Converted to the ''Kaiten'' mother ship on 09-09-1944. Sunk by [[USS Conklin (DE-439)|USS ''Conklin'']] and [[USS McCoy Reynolds (DE-440)|USS ''McCoy Reynolds'']] north of [[Palau]], on 19-11-1944
|-
|-
| 151
| 151
| ''[[Japanese submarine I-38|I-38]]''
| {{ship|Japanese submarine|I-38||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 19-06-1941
| 19 June 1941
| 15-04-1942
| 15 April 1942
| 31-01-1943
| 31 January 1943
| Sunk by {{ship|USS|Nicholas|DD-449|6}} east of [[Luzon]] on 13 November 1944.
|
| Sunk by [[USS Nicholas (DD-449)|USS ''Nicholas'']] east of [[Luzon]] on 12-11-1944
|-
|-
| 152
| 152
| ''[[Japanese submarine I-39|I-39]]''
| {{ship|Japanese submarine|I-39||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 19-06-1941
| 19 June 1941
| 15-04-1942
| 15 April 1942
| 22-04-1943
| 22 April 1943
| Sunk by {{ship|USS|Boyd|DD-544|6}} west of [[Makin (islands)|Makin]] at {{coord|03|10|N|171|55|E}} on 16 November 1943.
| Sank [[USS Navajo (AT-64)|USS ''Navajo'']] on 12-09-1943
| Sunk by [[USS Boyd (DD-544)|USS ''Boyd'']] west of [[Makin (islands)|Makin]] at {{coord|03|10|N|171|55|E}} on 16-11-1943
|-
|-
| 153
| 153
Line 243: Line 229:
|
|
|
|
| The dummy for the naval budget of the ''Yamato''-class battleships
|
| The dummy for the naval budget of the ''Yamato'' class battleships
|-
|}
|}


===''Type-B Mod.1'' (''I-40'' class)===
===''Type-B Mod.1'' (''I-40'' class)===
[[Image:IJN I-45 in 1943.jpg|thumb|left|200px|''I-45'' in 1943]]
[[Image:Japanese submarine I-45 in 1943.jpg|thumb|''I-45'' in 1943]]
Project number '''S37B'''. Six boats were planned under the [[Rapidly Naval Armaments Supplement Programme (Japan, 1941)|Maru Kyū Programme]] (Boats 370 - 375), all boats were completed. On the outside this class looked the same as the ''I-15'' class; however, they were built from high-tensile strength steel and equipped with diesel engines of a simpler design.
Project number '''S37B'''. Six boats were planned under the [[Rapidly Naval Armaments Supplement Programme (Japan, 1941)|Maru Kyū Programme]] (Boats 370 - 375), all boats were completed. On the outside this class looked the same as the ''I-15'' class; however, they were built from high-tensile strength steel and equipped with diesel engines of a simpler design.


*Boats in class
{| class="wikitable"
{| class="wikitable"
|-
| width="4%" | '''Boat No.'''
|+Boats in class
| width="3%" | '''Boat'''
|-
| width="10%" | '''Builder'''
| width="5%" | '''Laid down'''
! style="width:4%;"| Boat No.
! style="width:3%;"| Boat
| width="5%" | '''Launched'''
! style="width:10%;"| Builder
| width="5%" | '''Completed'''
! style="width:5%;"| Laid down
| width="25%" | '''Results'''
| width="20%" | '''Fate'''
! style="width:5%;"| Launched
! style="width:5%;"| Completed
! style="width:20%;"| Fate
|-
|-
| 370
| 370
| ''[[Japanese submarine I-40|I-40]]''
| {{ship|Japanese submarine|I-40||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 18-03-1942
| 18 March 1942
| 10-11-1942
| 10 November 1942
| 31-07-1943
| 31 July 1943
| Missing after 22 November 1943.
|
| Probably lost in an accident, after 22-11-1943
|-
|-
| 371
| 371
| ''[[Japanese submarine I-41|I-41]]''
| {{ship|Japanese submarine|I-41||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 18-03-1942
| 18 March 1942
| 10-11-1942
| 10 November 1942
| 18-09-1943
| 18 September 1943
| Sunk by {{ship|USS|Lawrence C. Taylor|DE-415|6}} east of the Philippines at {{coord|12|44|N|130|42|E}} on 18 November 1944.
| Damaged by [[USS Reno (CL-96)|USS ''Reno'']] on 03-11-1944
| Sunk by [[USS Lawrence C. Taylor (DE-415)|USS ''Lawrence C. Taylor'']] east of the Philippines at {{coord|12|44|N|130|42|E}} on 12-11-1944
|-
|-
| 372
| 372
| ''[[Japanese submarine I-42|I-42]]''
| {{ship|Japanese submarine|I-42||2}}
| Kure Naval Arsenal
| Kure Naval Arsenal
| 18-03-1942
| 18 March 1942
| 10-11-1942
| 10 November 1942
| 03-11-1943
| 3 November 1943
| Sunk by {{ship|USS|Tunny|SS-282|6}} southwest of Palau at {{coord|06|40|N|134|03|E}} on 23 March 1944.
|
| Sunk by [[USS Tunny (SS-282)|USS ''Tunny'']] southwest of Palau at {{coord|06|40|N|134|03|E}} on 23-03-1944
|-
|-
| 373
| 373
| ''[[Japanese submarine I-43|I-43]]''
| {{ship|Japanese submarine|I-43||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 27-04-1942
| 27 April 1942
| 10-25-1942
| 25 October 1942
| 05-11-1943
| 5 November 1943
| After completion, converted to a carrier for a ''Daihatsu''-class landing barge. Sunk by {{ship|USS|Aspro|SS-309|6}} north of Truk at {{coord|12|42|N|149|17|E}} on 15 February 1944.
|
| Sunk by [[USS Aspro (SS-309)|USS ''Aspro'']] north of Truk at {{coord|12|42|N|149|17|E}} on 15-02-1944
|-
|-
| 374
| 374
| ''[[Japanese submarine I-44|I-44]]''
| {{ship|Japanese submarine|I-44||2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 11-06-1942
| 11 June 1942
| 05-03-1943
| 5 March 1943
| 31-01-1944
| 31 January 1944
| Converted to a ''Kaiten'' mother ship on 22 October 1944. Sunk by an aircraft from {{USS|Tulagi|CVE-72|6}} southeast of Okinawa at {{coord|24|15|N|131|16|E}} on 29 April 1945.
| Possibly sank [[USS Snook (SS-279)|USS ''Snook'']] on 17-04-1945 (?)
| Converted to the ''Kaiten'' mother ship on 22-10-1944. Sunk by [[USS Heermann (DD-532)|USS ''Heermann'']], [[USS Uhlmann (DD-687)|USS ''Uhlmann'']], [[USS Mertz (DD-691)|USS ''Mertz'']], [[USS Collett (DD-730)|USS ''Collett'']] and aircraft from [[USS Bataan (CVL-29)|USS ''Bataan'']] north-northwest of [[Minami Daito, Okinawa|Minami Daitō]] at {{coord|12|42|N|149|17|E}} on 18-04-1945
|-
|-
| 375
| 375
| ''[[Japanese submarine I-45|I-45]]''
| {{ship|Japanese submarine|I-45||2}}
| Sasebo Naval Arsenal
| Sasebo Naval Arsenal
| 15-07-1942
| 15 July 1942
| 06-03-1943
| 6 March 1943
| 28-12-1943
| 28 December 1943
| Sunk by {{ship|USS|Whitehurst|DE-634|6}} east of the Philippines on 29 October 1944.
| Damaged [[USS Santee (CVE-29)|USS ''Santee'']] on 25-10-1944 (?)<ref name="tag1"/><br/>Sank [[USS Eversole (DE-404)|USS ''Eversole'']] on 28-10-1944
| (1). Sunk by [[USS Gridley (DD-380)|USS ''Gridley'']] and [[USS Helm (DD-388)|USS ''Helm'']] east of the Philippines at {{coord|10|10|N|127|28|E}} on 28-10-1944.<br/>(2). Sunk by [[USS Whitehurst (DE-634)|USS ''Whitehurst'']] east of the Philippines on 28-10-1944
|-
|}
|}


===''Type-B Mod.2'' (''I-54'' class)===
===''Type-B Mod.2'' (''I-54'' class)===
[[Image:IJN I-54 in 1944.jpg|thumb|left|200px|''I-54'' in 1944]]
[[Image:Japanese submarine I-54 in 1944.jpg|thumb|''I-54'' in 1944]]
Project number '''S37C'''. Twenty-one boats were planned under the [[Additional Naval Armaments Supplement Programme (Japan, 1941)|Maru Kyū Programme]] (Boats 627 - 636) and [[Modified 5th Naval Armaments Supplement Programme (Japan, 1942)|Kai-Maru 5 Programme]] (Boats 5101 - 5114). Eighteen boats were cancelled in late 1943, because the IJN was setting the {{nihongo|'''''Type-E submarine'''''|戊型潜水艦|Bo-gata sensuikan}} as 1945's main submarines
Project number '''S37C'''. Twenty-one boats were planned under the [[Additional Naval Armaments Supplement Programme (Japan, 1941)|Maru Kyū Programme]] (Boats 627 - 636) and [[Modified 5th Naval Armaments Supplement Programme (Japan, 1942)|Kai-Maru 5 Programme]] (Boats 5101 - 5114). Eighteen boats were cancelled in late 1943, because the IJN was setting the {{nihongo|'''''{{Interlanguage link|Type E submarine|ja|戊型潜水艦}}'''''|戊型潜水艦|Bo-gata sensuikan}} as 1945's main submarines.


*Boats in class
*Boats in class
{| class="wikitable"
{| class="wikitable"
|-
| width="4%" | '''Boat No.'''
| width="3%" | '''Boat'''
| style="width:4%;"| '''Boat No.'''
| width="10%" | '''Builder'''
| style="width:3%;"| '''Boat'''
| width="5%" | '''Laid down'''
| style="width:10%;"| '''Builder'''
| width="5%" | '''Launched'''
| style="width:5%;"| '''Laid down'''
| width="5%" | '''Completed'''
| style="width:5%;"| '''Launched'''
| width="25%" | '''Results'''
| style="width:5%;"| '''Completed'''
| width="20%" | '''Fate'''
| style="width:25%;"| '''Results'''
| style="width:20%;"| '''Fate'''
|-
|-
| 627
| 627
| ''[[Japanese submarine I-54|I-54]]''
| {{ship|Japanese submarine|I-54|1943|2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 01-07-1942
| 1 July 1942
| 04-05-1943
| 4 May 1943
| 31-03-1944
| 31 March 1944
| Damaged [[USS Santee (CVE-29)|USS ''Santee'']] on 25-10-1944 (?)<ref name="tag1">This result is estimated with a 'thing' by ''I-56'' in many Japanese documents</ref>
| Damaged {{ship|USS|Santee|CVE-29|6}} on 25-10-1944 (?)<ref group="note" name="tag1">This result is estimated with a 'thing' by ''I-56'' in many Japanese documents</ref>
| Sunk east of Leyte by {{USS|Helm|DD-388|6}} and {{USS|Gridley|DD-380|6}} on 28 October 1944.{{refn|group=note|Although several sources credit {{USS|Richard M. Rowell|DE-403|2}} with sinking ''I-54'' on 26 October 1944,<ref>Stille, Mark. ''Imperial Japanese Navy Submarines 1941-45'' (Osprey, 2007), p.33;</ref><ref>Fitzsimons, Bernard, ed. ''Encyclopedia of 20th Century Weapons and Warfare'' (London: Phoebus, 1978), Vol. 13, p.1409, "''I54''".</ref> her target was most likely ''I-56'', which survived the encounter.}}
| (1). Sunk by [[USS Gridley (DD-380)|USS ''Gridley'']] and [[USS Helm (DD-388)|USS ''Helm'']] east of the Philippines at {{coord|10|10|N|127|28|E}} on 28-10-1944<br/>(2). Sunk by [[USS Whitehurst (DE-634)|USS ''Whitehurst'']] east of the Philippines on 28-10-1944
|-
|-
| 629
| 629
| ''[[Japanese submarine I-56|I-56]]''
| {{ship|Japanese submarine|I-56|1943|2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 29-09-1942
| 29 September 1942
| 30-06-1943
| 30 June 1943
| 08-06-1944
| 8 June 1944
| Damaged USS ''LST-695'' on 24-10-1944<br/>Damaged [[USS Santee (CVE-29)|USS ''Santee'']] on 25-10-1944 (?)<ref name="tag1"/>
| Damaged USS ''LST-695'' on 24 October 1944.<br/>Damaged {{ship|USS|Santee|CVE-29|6}} on 25 October 1944 (?).<ref group="note" name="tag1" />
| Converted to the ''Kaiten'' mother ship on 14-11-1944. Sunk by [[USS Hudson (DD-475)|USS ''Hudson'']] at [[Kumejima Island]], at {{coord|26|22|N|126|30|E}} on 05-04-1945
| Conversion to a ''Kaiten'' mother ship began in early October 1943 and completed in November 1944. Sunk by {{ship|USS|Heermann|DD-532|6}}, {{ship|USS|Uhlmann|DD-687|6}}, {{ship|USS|Mertz|DD-691|6}}, {{ship|USS|Collett|DD-730|6}} and aircraft from {{ship|USS|Bataan|CVL-29|6}} east of Okinawa at {{coord|26|42|N|130|38|E}} on 18 April 1945.
|-
|-
| 631
| 631
| ''[[Japanese submarine I-58|I-58]]''
| {{ship|Japanese submarine|I-58|1943|2}}
| Yokosuka Naval Arsenal
| Yokosuka Naval Arsenal
| 26-12-1942
| 26 December 1942
| 09-10-1943
| 9 October 1943
| 07-09-1944
| 7 September 1944
| Damaged [[USS Lowry (DD-770)|USS ''Lowry'']] on 28-07-1945 by ''Kaiten''<br/>Sank [[USS Indianapolis (CA-35)|USS ''Indianapolis'']] on 30-07-1945<br/>Damaged [[USS Thomas F. Nickel (DE-587)|USS ''Thomas F. Nickel'']] on 12-08-1945 by ''Kaiten'' (?)
| Sank SS ''Wild Hunter'' on 28 July 1945, possibly by ''Kaiten''<br/>Sank {{ship|USS|Indianapolis|CA-35|6}} on 30 July 1945<br/>Damaged {{ship|USS|Thomas F. Nickel|DE-587|6}} on 12 August 1945 by ''Kaiten'' (?)
| Converted to the ''Kaiten'' mother ship, before completion. Decommissioned on 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946
| Converted to a ''Kaiten'' mother ship before completion. Decommissioned on 30 November 1945, scuttled off the Gotō Islands on 1 April 1946 as part of Operation Road's End. Wreck found in 2017.
|-
|-
| 633 - 636
| 633 - 636
Line 377: Line 356:
|
|
|
|
|-
|}
|}


===''V22A Type''===
===''V22A Type''===
Project number '''S49A'''. Eighteen boats were planned under the [[Modified 5th Naval Armaments Supplement Programme (Japan, 1942)|Kai-Maru 5 Programme]] (Boats 5115 - 5132). However, all boats were cancelled in late 1943, because the IJN concentrated on production of {{nihongo|'''''Type-E submarine'''''|戊型潜水艦|Bo-gata sensuikan}} from 1945 onwards
Project number '''S49A'''. Eighteen boats were planned under the [[Modified 5th Naval Armaments Supplement Programme (Japan, 1942)|Kai-Maru 5 Programme]] (Boats 5115 - 5132). However, all boats were cancelled in late 1943, because the IJN concentrated on production of {{nihongo|'''''Type-E submarine'''''|戊型潜水艦|Bo-gata sensuikan}} from 1945.


*Boats in class
*Boats in class
{| class="wikitable"
{| class="wikitable"
|-
| width="4%" | '''Boat No.'''
| width="3%" | '''Boat'''
| style="width:4%;"| '''Boat No.'''
| width="10%" | '''Builder'''
| style="width:3%;"| '''Boat'''
| width="5%" | '''Laid down'''
| style="width:10%;"| '''Builder'''
| width="5%" | '''Launched'''
| style="width:5%;"| '''Laid down'''
| width="5%" | '''Completed'''
| style="width:5%;"| '''Launched'''
| width="20%" | '''Fate'''
| style="width:5%;"| '''Completed'''
| style="width:20%;"| '''Fate'''
|-
|-
| 5115 - 5132
| 5115 - 5132
Line 400: Line 379:
|
|
| Cancelled in 1943
| Cancelled in 1943
|-
|}
|}


==Characteristics==
==Characteristics==
{| class="wikitable"
{| class="wikitable"
|-
| width="15%" colspan="2"| '''Type'''
| width="16%" | '''''Type-B''''' (''I-15'')
| style="width:15%;" colspan="2"| '''Type'''
| width="16%" | '''''Type-B Mod. 1''''' (''I-40'')
| style="width:16%;"| '''''Type-B''''' (''I-15'')
| width="16%" | '''''Type-B Mod. 2''''' (''I-54'')
| style="width:16%;"| '''''Type-B Mod. 1''''' (''I-40'')
| width="16%" | '''''V22A Type'''''
| style="width:16%;"| '''''Type-B Mod. 2''''' (''I-54'')
| style="width:16%;"| '''''V22A Type'''''
|-
|-
| rowspan="2"|'''Displacement'''
| rowspan="2"|'''Displacement'''
Line 512: Line 491:
|-
|-
| colspan="2"| '''Armament''' (initial)
| colspan="2"| '''Armament''' (initial)
| • 6 × {{convert|533|mm|in|0|abbr=on}} [[Torpedo tube]]s<br/>(6 × front)<br/>• 17 × [[Type 95 torpedo]]es<br/>• 1 × {{convert|140|mm|in|abbr=on}} [[Caliber#Caliber as measurement of length|L/40]] 11th Year Type Naval gun<br/>• 2 × [[Type 96 25 mm AT/AA Gun|Type 96 25mm AA gun]]s
| • 6 × {{convert|533|mm|in|0|abbr=on}} [[Torpedo tube]]s<br/>(6 × front)<br/>• 17 × [[Type 95 torpedo]]es<br/>• 1 × {{convert|140|mm|in|abbr=on}} [[L53|L/40]] [[14 cm/40 11th Year Type naval gun|11th Year Type naval gun]]<ref name="campbell">Campbell, John ''Naval Weapons of World War Two'' {{ISBN|0-87021-459-4}} p.191</ref><br/>• 2 × [[Type 96 25 mm AT/AA Gun|Type 96 25mm AA gun]]s
| • 6 × {{convert|533|mm|in|0|abbr=on}} TTs (6 × front)<br/>• 17 × Type 95 torpedoes<br/>• 1 × {{convert|140|mm|in|abbr=on}} L/40 11th Year Type Naval gun<br/>• 2 × Type 96 25mm AA guns
| • 6 × {{convert|533|mm|in|0|abbr=on}} TTs (6 × front)<br/>• 17 × Type 95 torpedoes<br/>• 1 × {{convert|140|mm|in|abbr=on}} L/40 11th Year Type Naval gun<ref name="campbell"/><br/>• 2 × Type 96 25mm AA guns
| • 6 × {{convert|533|mm|in|0|abbr=on}} TTs (6 × front)<br/>• 19 × Type 95 torpedoes<br/>• 1 × {{convert|140|mm|in|abbr=on}} L/40 11th Year Type Naval gun<br/>• 2 × Type 96 25mm AA guns
| • 6 × {{convert|533|mm|in|0|abbr=on}} TTs (6 × front)<br/>• 19 × Type 95 torpedoes<br/>• 1 × {{convert|140|mm|in|abbr=on}} L/40 11th Year Type Naval gun<ref name="campbell"/><br/>• 2 × Type 96 25mm AA guns
| • 8 × {{convert|533|mm|in|0|abbr=on}} TTs (8 × front)<br/>• 16 × torpedoes<br/>• 1 × 140&nbsp;mm Naval gun<br/>• 4 × 25mm AA guns<br/>• 8 × [[naval mine]]s
| • 8 × {{convert|533|mm|in|0|abbr=on}} TTs (8 × front)<br/>• 16 × torpedoes<br/>• 1 × [[14 cm/40 11th Year Type naval gun]]<ref name="campbell"/><br/>• 4 × 25mm AA guns<br/>• 8 × [[naval mine]]s
|-
|-
| colspan="2"| '''Aircraft and facilities'''
| colspan="2"| '''Aircraft and facilities'''
Line 524: Line 503:


| • Catapult and hangar<br/>• 1 × floatplane
| • Catapult and hangar<br/>• 1 × floatplane
|-
|}
|}


==Footnotes==
==References==
{{reflist}}
<references/>

==Notes==
{{reflist|group=note}}


==Bibliography==
==Bibliography==
*{{cite book |last1=Milanovich |first1=Kathrin |editor1-last=Jordan |editor1-first=John |title=Warship 2021 |date=2021 |publisher=Osprey Publishing |location=Oxford, UK |isbn=978-1-4728-4779-9 |chapter=The IJN Submarines of the I 15 Class|pages=29–43}}
*''{{cite web |url=http://rekigun.net/ |title=Rekishi Gunzō}}, History of Pacific War Vol.17 I-Gō Submarines'', [[Gakken]] (Japan), January 1998, ISBN 4-05-601767-0
*''Rekishi Gunzō, History of Pacific War Vol.35 Kō-hyōteki and Kōryū'', Gakken (Japan), April 2002, ISBN 4-05-602741-2
* ''{{cite web |url=http://rekigun.net/ |title=Rekishi Gunzō}}, History of Pacific War Vol.17 I-Gō Submarines'', [[Gakken]] (Japan), January 1998, {{ISBN|4-05-601767-0}}
*''Rekishi Gunzō, History of Pacific War Vol.36 Kairyū and Kaiten'', Gakken (Japan), May 2002, ISBN 4-05-602693-9
* ''Rekishi Gunzō, History of Pacific War Vol.35 Kō-hyōteki and Kōryū'', Gakken (Japan), April 2002, {{ISBN|4-05-602741-2}}
*''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
* ''Rekishi Gunzō, History of Pacific War Vol.36 Kairyū and Kaiten'', Gakken (Japan), May 2002, {{ISBN|4-05-602693-9}}
*''Model Art Extra No.537, Drawings of Imperial Japanese Naval Vessels Part-3'', Model Art Co. Ltd. (Japan), May 1999, Book code 08734-5
* ''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}}
*''The Maru Special, Japanese Naval Vessels No.31 Japanese Submarines I'', Ushio Shobō (Japan), September 1979, Book code 68343-31
* ''Model Art Extra No.537, Drawings of Imperial Japanese Naval Vessels Part-3'', Model Art Co. Ltd. (Japan), May 1999, Book code 08734-5
* ''The Maru Special, Japanese Naval Vessels No.31 Japanese Submarines I'', Ushio Shobō (Japan), September 1979, Book code 68343-31

<!-- non-breaking space to keep AWB drones from altering the space before the navbox-->
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{{Type B submarine}}
{{Type B submarine}}
{{WWII Japanese ships}}
{{WWIIJapaneseShips}}


{{DEFAULTSORT:B submarine}}
{{DEFAULTSORT:B submarine}}
Line 547: Line 528:
[[Category:Type B submarines| ]]
[[Category:Type B submarines| ]]
[[Category:Submarines of the Imperial Japanese Navy]]
[[Category:Submarines of the Imperial Japanese Navy]]

[[ja:伊一五型潜水艦]]
[[pl:Okręty podwodne typu B1]]
[[ru:Подводные лодки типа I-15]]
[[zh:伊一五型潛艇]]

Latest revision as of 06:47, 23 November 2021

Class overview
NameType-B submarines
Builders
Operators Imperial Japanese Navy
Preceded byJunsen type submarine
Subclasses
Built1938-1944
In commission1940-1945

The Cruiser submarine Type-B (巡潜乙型潜水艦, Junsen Otsu-gata sensuikan) was a class of submarine in the Imperial Japanese Navy (IJN) which served during World War II. The Type-B submarines were similar to the Type-A apart from not having the headquarters installation.

Class variants

[edit]

The Type-B submarines were divided into four classes:

  • Type-B (乙型（伊十五型）, Otsu-gata, I-15-class)
  • Type-B Mod.1 (乙型改一（伊四十型）, Otsu-gata Kai-1, I-40-class)
  • Type-B Mod.2 (乙型改二（伊五十四型）, Otsu-gata Kai-2, I-54-class)
  • V22A Type (第5115号艦型, Dai-5115-Gō kan-gata, 5115th vessel-class). The 5115th vessel-class submarines were not built and remained a design only.

Type-B (I-15 class)

[edit]
Main article: Type B1 submarine
I-15 on 15 September 1940

Project number S37. Twenty boats were built between 1937 and 1944 under the Maru 3 Programme (Boats 37 - 42) and Maru 4 Programme (Boats 139 - 152).

Boats in class
Boat No. Boat Builder Laid down Launched Completed Fate
37 I-15 [note 1] Kure Naval Arsenal 25 January 1938 7 March 1939 30 September 1940 Sunk by USS Southard near San Cristóbal on 10 November 1942.
38 I-17 Yokosuka Naval Arsenal 18 April 1938 19 July 1939 24 January 1941 Sunk by HMNZS Tui and maritime patrol aircraft at Nouméa 23°26′S 166°54′E / 23.433°S 166.900°E / -23.433; 166.900 on 19 August 1943.
39 I-19 Mitsubishi, Kōbe Shipyard 15 March 1938 16 September 1939 28 April 1941 Sunk by USS Radford in the Gilbert Islands on 25 November 1943.
40 I-21 Kawasaki, Kōbe Shipyard 7 January 1939 24 February 1940 15 July 1941 Missing near Tarawa after 27 November 1943. Possibly sunk by aircraft from USS Chenango on 29 November 1943.
41 I-23 Yokosuka Naval Arsenal 8 December 1938 24 November 1939 27 September 1941 Missing near the Hawaiian Islands after 24 February 1942, most likely due to a diving accident.
42 I-25 Mitsubishi, Kōbe Shipyard 3 February 1939 8 June 1940 15 October 1941 Missing near Espiritu Santo after 23 August 1943. Possibly sunk by USS Patterson on 25 August 1943.
43 The dummy for the naval budget of the Yamato-class battleship.
139 I-26 Kure Naval Arsenal 7 June 1939 10 April 1940 6 November 1941 Missing east of the Philippines after 25 October 1944. Possibly sunk by USS Richard M. Rowell on 26 October 1944.
140 I-27 Sasebo Naval Arsenal 5 July 1939 6 June 1940 24 February 1942 Sunk by HMS Paladin and HMS Petard in the Malediven at 00°57′N 72°16′E / 0.950°N 72.267°E / 0.950; 72.267 on 12 February 1944.
141 I-28 Mitsubishi, Kōbe Shipyard 25 September 1939 17 December 1940 6 February 1942 Sunk by USS Tautog north of Rabaul at 06°30′N 152°00′E / 6.500°N 152.000°E / 6.500; 152.000 on 17 May 1942.
142 I-29 Yokosuka Naval Arsenal 20 September 1939 29 September 1940 27 February 1942 Sunk by USS Sawfish south of Sabtang Island at 20°10′N 121°50′E / 20.167°N 121.833°E / 20.167; 121.833 on 26 July 1944.
143 I-30 Kure Naval Arsenal 7 June 1939 17 September 1940 28 February 1942 Sunk by a British mine at Singapore on 13 October 1942. Raised and scrapped between August 1959 and February 1960.
144 I-31 Yokosuka Naval Arsenal 6 December 1939 13 March 1941 30 May 1942 Sunk by USS Frazier at Attu Island on 13 May 1943.
145 I-32 Sasebo Naval Arsenal 20 January 1940 17 December 1940 26 April 1942 Sunk by USS Manlove and USS PC-1135 northeast of Wotje Atoll on 24 March 1943.
146 I-33 Mitsubishi, Kōbe Shipyard 21 February 1940 1 May 1941 10 June 1942 Lost in an accident at Truk on 26 September 1942. Salvaged and repaired starting 29 December 1943. Later, lost in another accident at Iyo Nada on 13 June 1944. Salvaged and scrapped starting 28 June 1953.
147 I-34 Sasebo Naval Arsenal 9 January 1941 24 September 1941 31 August 1942 Sunk by HMS Taurus at Penang Island on 13 November 1943. Salvaged on 4 December 1962.
148 I-35 Mitsubishi, Kōbe Shipyard 2 September 1940 24 September 1941 31 August 1942 Sunk by USS Meade and USS Frazier south of Tarawa on 22 November 1943.
149 I-36 Yokosuka Naval Arsenal 4 December 1940 1 November 1941 30 September 1942 Converted to a Kaiten mother ship on 1 September 1944. Decommissioned on 30 November 1945, blown up (along with Ha-106) off the Gotō Islands on 1 April 1946 as part of Operation Road's End.
150 I-37 Kure Naval Arsenal 7 December 1940 22 October 1941 10 March 1943 Converted to a Kaiten mother ship on 9 September 1944. Sunk by USS Conklin and USS McCoy Reynolds north of Palau, on 19 November 1944.
151 I-38 Sasebo Naval Arsenal 19 June 1941 15 April 1942 31 January 1943 Sunk by USS Nicholas east of Luzon on 13 November 1944.
152 I-39 Sasebo Naval Arsenal 19 June 1941 15 April 1942 22 April 1943 Sunk by USS Boyd west of Makin at 03°10′N 171°55′E / 3.167°N 171.917°E / 3.167; 171.917 on 16 November 1943.
153 The dummy for the naval budget of the Yamato-class battleships

Type-B Mod.1 (I-40 class)

[edit]
I-45 in 1943

Project number S37B. Six boats were planned under the Maru Kyū Programme (Boats 370 - 375), all boats were completed. On the outside this class looked the same as the I-15 class; however, they were built from high-tensile strength steel and equipped with diesel engines of a simpler design.

Boats in class
Boat No. Boat Builder Laid down Launched Completed Fate
370 I-40 Kure Naval Arsenal 18 March 1942 10 November 1942 31 July 1943 Missing after 22 November 1943.
371 I-41 Kure Naval Arsenal 18 March 1942 10 November 1942 18 September 1943 Sunk by USS Lawrence C. Taylor east of the Philippines at 12°44′N 130°42′E / 12.733°N 130.700°E / 12.733; 130.700 on 18 November 1944.
372 I-42 Kure Naval Arsenal 18 March 1942 10 November 1942 3 November 1943 Sunk by USS Tunny southwest of Palau at 06°40′N 134°03′E / 6.667°N 134.050°E / 6.667; 134.050 on 23 March 1944.
373 I-43 Sasebo Naval Arsenal 27 April 1942 25 October 1942 5 November 1943 After completion, converted to a carrier for a Daihatsu-class landing barge. Sunk by USS Aspro north of Truk at 12°42′N 149°17′E / 12.700°N 149.283°E / 12.700; 149.283 on 15 February 1944.
374 I-44 Yokosuka Naval Arsenal 11 June 1942 5 March 1943 31 January 1944 Converted to a Kaiten mother ship on 22 October 1944. Sunk by an aircraft from USS Tulagi southeast of Okinawa at 24°15′N 131°16′E / 24.250°N 131.267°E / 24.250; 131.267 on 29 April 1945.
375 I-45 Sasebo Naval Arsenal 15 July 1942 6 March 1943 28 December 1943 Sunk by USS Whitehurst east of the Philippines on 29 October 1944.

Type-B Mod.2 (I-54 class)

[edit]
I-54 in 1944

Project number S37C. Twenty-one boats were planned under the Maru Kyū Programme (Boats 627 - 636) and Kai-Maru 5 Programme (Boats 5101 - 5114). Eighteen boats were cancelled in late 1943, because the IJN was setting the Type E submarine [ja] (戊型潜水艦, Bo-gata sensuikan) as 1945's main submarines.

  • Boats in class
Boat No. Boat Builder Laid down Launched Completed Results Fate
627 I-54 Yokosuka Naval Arsenal 1 July 1942 4 May 1943 31 March 1944 Damaged USS Santee on 25-10-1944 (?)[note 2] Sunk east of Leyte by USS Helm and USS Gridley on 28 October 1944.[note 3]
629 I-56 Yokosuka Naval Arsenal 29 September 1942 30 June 1943 8 June 1944 Damaged USS LST-695 on 24 October 1944.
Damaged USS Santee on 25 October 1944 (?).[note 2] 		Conversion to a Kaiten mother ship began in early October 1943 and completed in November 1944. Sunk by USS Heermann, USS Uhlmann, USS Mertz, USS Collett and aircraft from USS Bataan east of Okinawa at 26°42′N 130°38′E / 26.700°N 130.633°E / 26.700; 130.633 on 18 April 1945.
631 I-58 Yokosuka Naval Arsenal 26 December 1942 9 October 1943 7 September 1944 Sank SS Wild Hunter on 28 July 1945, possibly by Kaiten
Sank USS Indianapolis on 30 July 1945
Damaged USS Thomas F. Nickel on 12 August 1945 by Kaiten (?) 		Converted to a Kaiten mother ship before completion. Decommissioned on 30 November 1945, scuttled off the Gotō Islands on 1 April 1946 as part of Operation Road's End. Wreck found in 2017.
633 - 636 Cancelled in 1943
5101 - 5114

V22A Type

[edit]

Project number S49A. Eighteen boats were planned under the Kai-Maru 5 Programme (Boats 5115 - 5132). However, all boats were cancelled in late 1943, because the IJN concentrated on production of Type-E submarine (戊型潜水艦, Bo-gata sensuikan) from 1945.

  • Boats in class
Boat No. Boat Builder Laid down Launched Completed Fate
5115 - 5132 Cancelled in 1943

Characteristics

[edit]
Typ Type-B (I-15) Type-B Mod. 1 (I-40) Type-B Mod. 2 (I-54) V22A Type
Displacement Surfaced 2,198 long tons (2,233 t) 2,230 long tons (2,266 t) 2,140 long tons (2,174 t) 2,330 long tons (2,367 t)
Submerged 3,654 long tons (3,713 t) 3,700 long tons (3,759 t) 3,688 long tons (3,747 t) No data
Length (overall) 108.70 m (356 ft 8 in) 108.70 m (356 ft 8 in) 108.70 m (356 ft 8 in) 106.50 m (349 ft 5 in) (waterline)
Beam 9.30 m (30 ft 6 in) 9.30 m (30 ft 6 in) 9.30 m (30 ft 6 in) 9.64 m (31 ft 8 in)
Draft 5.14 m (16 ft 10 in) 5.20 m (17 ft 1 in) 5.19 m (17 ft 0 in) 5.32 m (17 ft 5 in)
Depth 7.90 m (25 ft 11 in) 7.90 m (25 ft 11 in) 7.90 m (25 ft 11 in) No data
Power plant and shaft 2 × Kampon Mk. 2 Model 10 diesels
2 shafts 		2 × Kampon Mk. 1A Model 10 diesels
2 shafts 		2 × Kampon Mk. 22 Model 10 diesels
2 shafts 		2 × Kampon Mk. 2 Model 10 diesels
2 shafts
Power Surfaced 12,400 bhp 11,000 bhp 4,700 bhp 11,000 bhp
Submerged 2,000 shp 2,000 shp 1,200 shp 2,400 shp
Speed Surfaced 23.6 knots (43.7 km/h) 23.5 knots (43.5 km/h) 17.7 knots (32.8 km/h) 22.4 knots (41.5 km/h)
Submerged 8.0 knots (14.8 km/h) 8.0 knots (14.8 km/h) 6.5 knots (12.0 km/h) 8.0 knots (14.8 km/h)
Range Surfaced 14,000 nmi (26,000 km) at 16 knots (30 km/h) 14,000 nmi (26,000 km) at 16 knots (30 km/h) 21,000 nmi (39,000 km) at 16 knots (30 km/h) 14,000 nmi (26,000 km) at 16 knots (30 km/h)
Submerged 96 nmi (178 km) at 3 knots (5.6 km/h) 96 nmi (178 km) at 3 knots (5.6 km/h) 105 nmi (194 km) at 3 knots (5.6 km/h) 80 nmi (150 km) at 3 knots (5.6 km/h)
Test depth 100 m (330 ft) 100 m (330 ft) 100 m (330 ft) 100 m (330 ft)
Fuel 774 tons 814 tons 842.8 tons 735 tons
Complement 94 94 94 No data
Armament (initial) • 6 × 533 mm (21 in) Torpedo tubes
(6 × front)
• 17 × Type 95 torpedoes
• 1 × 140 mm (5.5 in) L/40 11th Year Type naval gun[3]
• 2 × Type 96 25mm AA guns 		• 6 × 533 mm (21 in) TTs (6 × front)
• 17 × Type 95 torpedoes
• 1 × 140 mm (5.5 in) L/40 11th Year Type Naval gun[3]
• 2 × Type 96 25mm AA guns 		• 6 × 533 mm (21 in) TTs (6 × front)
• 19 × Type 95 torpedoes
• 1 × 140 mm (5.5 in) L/40 11th Year Type Naval gun[3]
• 2 × Type 96 25mm AA guns 		• 8 × 533 mm (21 in) TTs (8 × front)
• 16 × torpedoes
• 1 × 14 cm/40 11th Year Type naval gun[3]
• 4 × 25mm AA guns
• 8 × naval mines
Aircraft and facilities • Catapult and hangar
• 1 × Watanabe E9W1 Slim seaplane 		• Catapult and hangar
• 1 × Yokosuka E14Y2 Glen seaplane 		• Catapult and hangar
• 1 × Yokosuka E14Y2 Glen seaplane 		• Catapult and hangar
• 1 × floatplane

References

[edit]
  1. ^ Stille, Mark. Imperial Japanese Navy Submarines 1941-45 (Osprey, 2007), p.33;
  2. ^ Fitzsimons, Bernard, ed. Encyclopedia of 20th Century Weapons and Warfare (London: Phoebus, 1978), Vol. 13, p.1409, "I54".
  3. ^ a b c d Campbell, John Naval Weapons of World War Two ISBN 0-87021-459-4 p.191

Notes

[edit]
  1. ^ 伊号第15潜水艦 (I-Gō Dai-15 Sensuikan).
  2. ^ a b This result is estimated with a 'thing' by I-56 in many Japanese documents
  3. ^ Although several sources credit Richard M. Rowell with sinking I-54 on 26 October 1944,[1][2] her target was most likely I-56, which survived the encounter.

Bibliography

[edit]
  • Milanovich, Kathrin (2021). "The IJN Submarines of the I 15 Class". In Jordan, John (ed.). Warship 2021. Oxford, UK: Osprey Publishing. pp. 29–43. ISBN 978-1-4728-4779-9.
  • "Rekishi Gunzō"., History of Pacific War Vol.17 I-Gō Submarines, Gakken (Japan), January 1998, ISBN 4-05-601767-0
  • Rekishi Gunzō, History of Pacific War Vol.35 Kō-hyōteki and Kōryū, Gakken (Japan), April 2002, ISBN 4-05-602741-2
  • Rekishi Gunzō, History of Pacific War Vol.36 Kairyū and Kaiten, Gakken (Japan), May 2002, ISBN 4-05-602693-9
  • 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
  • Model Art Extra No.537, Drawings of Imperial Japanese Naval Vessels Part-3, Model Art Co. Ltd. (Japan), May 1999, Book code 08734-5
  • The Maru Special, Japanese Naval Vessels No.31 Japanese Submarines I, Ushio Shobō (Japan), September 1979, Book code 68343-31
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