View source for Japanese submarine I-184

{|{{Infobox ship begin}}
{{Infobox ship image
| Ship image= I-176.jpg
| Ship caption=[[Sister ship]] ''I-176'' at sea, 1942
}}
{{Infobox ship career
| Hide header=
| Ship country=[[Empire of Japan]]
| Ship flag= {{shipboxflag|Empire of Japan|naval}}
| Ship name= ''Submarine No. 162''
| Ship ordered=
| Ship awarded=
| Ship builder=[[Yokosuka Naval Arsenal]], [[Yokosuka]],&nbsp;[[Japan]]
| Ship original cost=
| Ship yard number=
| Ship way number=
| Ship laid down=1 April 1942
| Ship renamed=*''I-84'' on&nbsp;unknown&nbsp;date
*''I-184'' on 20&nbsp;May&nbsp;1942
}}
{{Infobox ship career
| Hide header=yes
| Ship country=[[Empire of Japan]]
| Ship flag= {{shipboxflag|Empire of Japan|naval}}
| Ship launched=12 December 1942
| Ship sponsor=
| Ship christened=
| Ship completed=15 October 1943
| Ship fate=Sunk 19 June 1944
| Ship notes=
| Ship badge=
}}
{{Infobox ship career
| Hide header=yes
| Ship struck=10 August 1944
| Ship notes=
| Ship badge=
}}
{{Infobox ship characteristics
| Hide header=
| Header caption=
|Ship class=[[Kaidai type submarine|''Kaidai'' type]], [[Kaidai type submarine#Kaidai VII (I-176 class)|''KD7''-class]]
|Ship displacement=*{{Convert|1833|LT|t|0|disp=flip|abbr=on}} surfaced
* {{Convert|2602|LT|t|0|disp=flip|abbr=on}} submerged
|Ship length={{convert|105.5|m|ftin|abbr=on}}
|Ship beam={{convert|8.25|m|ftin|abbr=on}}
|Ship draft={{convert|4.6|m|ftin|abbr=on}}
|Ship power=*{{convert|8000|bhp|0|lk=in|abbr=on}} ([[diesel engine]]s)
* {{convert|1800|hp|0|abbr=on}} ([[electric motor]]s)
|Ship propulsion=*[[Diesel-electric]]
* 2 × [[diesel engine]]s
* 2 × [[electric motor]]s
|Ship speed=*{{convert|23|kn|lk=in}} surfaced
* {{convert|8|kn}} submerged
|Ship range=*{{convert|8000|nmi|abbr=on|lk=in}} at {{convert|16|kn}} surfaced
* {{convert|50|nmi|abbr=on}} at {{convert|5|kn}} submerged
|Ship endurance=
|Ship test depth={{convert|80|m|ft|0|abbr=on}}
|Ship complement=86
|Ship armament=*6 × {{convert|533|mm|in|0|abbr=on}} [[torpedo tube]]s (all bow)
* 1 × [[12 cm 11th Year Type naval gun|{{convert|120|mm|in|abbr=on}}]] [[deck gun]]
* 1 × twin [[Type 96 25 mm AT/AA Gun|{{convert|25|mm|abbr=on|1}} Type 96]] [[AA gun]]
}}
|}
'''''I-184''''' (originally '''''I-84''''') was an [[Imperial Japanese Navy]] [[Kaidai type submarine|''Kaidai'' type]] [[cruiser submarine]] of the KD7 [[ship class|sub-class]] [[Ship commissioning|commissioned]] in 1943. During [[World War II]], she operated in the [[Aleutian Islands]] and the Central [[Pacific Ocean]] before she was sunk with all hands by a [[United States Navy]] [[torpedo bomber]] during the [[Battle of the Philippine Sea]] in June 1944.

==Design and description==
The submarines of the KD7 sub-class were medium-range attack submarines developed from the preceding KD6 sub-class. They [[Displacement (ship)|displaced]] {{Convert|1833|LT|t|0|disp=flip|sp=us}} surfaced and {{Convert|2602|LT|t|0|disp=flip|sp=us}} submerged. The submarines were {{convert|105.5|m|ftin|sp=us}} long and had a [[Beam (nautical)|beam]] of {{convert|8.25|m|ftin|sp=us}} and a [[Draft (hull)|draft]] of {{convert|4.6|m|ftin|sp=us}}. They had a diving depth of {{convert|80|m|ft|0|abbr=on}} and a complement of 86 [[Commissioned officer|officers]] and [[enlisted rank|crewmen]].<ref name=cd3>Carpenter & Polmar, p. 105</ref>

For surface running, the submarines were powered by two {{convert|4000|bhp|lk=in|0|adj=on}} [[diesel engine]]s, each driving one [[propeller shaft]]. When submerged, each propeller was driven by a {{convert|900|hp|0|adj=on}} [[electric motor]]. The submarines could reach {{convert|23|kn|lk=in}} on the surface and {{convert|8|kn}} underwater. On the surface, the KD7s had a range of {{convert|8000|nmi|lk=in}} at {{convert|16|kn}}; submerged, they had a range of {{convert|50|nmi|abbr=on}} at {{convert|5|kn}}.<ref name=c5>Chesneau, p. 199</ref>

The submarines were armed with six internal {{convert|53.3|cm|in|1|abbr=on|sp=us}} [[torpedo tube]]s, all in the [[Bow (ship)|bow]]. They carried one reload for each tube for a total of 12 [[torpedo]]es. They were originally intended to be armed with two twin-gun mounts for the [[Type 96 25 mm AT/AA Gun|{{convert|25|mm|abbr=on|1}} Type 96]] [[anti-aircraft gun]], but a [[12 cm 11th Year Type naval gun|{{convert|120|mm|in|abbr=on}}]] [[deck gun]] for combat on the surface was substituted for one 25&nbsp;mm mount during construction.<ref name=b4>Bagnasco, pp. 183, 186</ref>

==Construction and commissioning==
''I-184'' was [[Keel-laying|laid down]] by the [[Yokosuka Naval Arsenal]] at [[Yokosuka]], [[Japan]], as '''''Submarine No. 162''''' on 1 April 1942.<ref name=ijnsubsiteI184>[http://www.ijnsubsite.info/I-Sub%20Details/I-184.htm I-184 ijnsubsite.com 2 November 2018 Accessed 19 June 2022]</ref><ref name=combinedfleetI184>{{cite web |url= http://www.combinedfleet.com/I-184.htm |title=IJN Submarine I-184: Tabular Record of Movement |first1=Bob |last1=Hackett |first2=Sander |last2=Kingsepp |work=combinedfleet.com |date=1 August 2016|access-date=19 June 2022}}</ref> She soon was named '''''I-84''''', then was renamed '''''I-184''''' on 20 May 1942.<ref name=cd3/><ref name=ijnsubsiteI184/> She was [[Ceremonial ship launching|launched]] on 12 December 1942 and completed and [[Ship commissioning|commissioned]] on 15 October 1943.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/><ref name=j5>Jentschura, Jung & Mickel, p. 172</ref>

==Service history==
===October 1943–January 1944===
On the day of her commissioning, ''I-184'' was attached to the [[Sasebo Naval District]] and assigned to Submarine [[Squadron (naval)|Squadron]] 11 in the [[1st Fleet (Imperial Japanese Navy)|1st Fleet]], an element of the [[Combined Fleet]].<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> Submarine Squadron 11 was reassigned to the [[6th Fleet (Imperial Japanese Navy)|6th Fleet]], another element of the Combined Fleet, on 25 November 1943.<ref name=ijnsubsiteI184/> In late November 1943, ''I-184'' took part in [[antisubmarine warfare]] exercises in the Iyo Nada in the [[Seto Inland Sea]] with the [[submarine tender]] {{ship|Japanese submarine tender|Chōgei||2}} and the submarines {{ship|Japanese submarine|I-42||2}}, {{ship|Japanese submarine|I-43||2}}, {{ship|Japanese submarine|Ro-40||2}}, and {{ship|Japanese submarine|Ro-113||2}}.<ref name=combinedfleetI184/>

On 28 January 1944, ''I-184'' got underway from [[Kure, Hiroshima|Kure]], Japan, to test-launch the new [[Mark 1 mine|Mark 1]] [[naval mine]].<ref name=combinedfleetI184/> She was reassigned to Submarine Squadron 22 in the 6th Fleet on 31 January 1944.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/>

===Aleutian Islands===

On 25 February 1944, ''I-184'' received a temporary assignment to the Northeast Area Unit<ref name=combinedfleetI184/> for duty in northern waters. She departed [[Sasebo]], Japan, on 26 February 1944,<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> visited [[Ōminato Guard District|Ōminato]] in northern [[Honshu]] from 29 February to 4 March 1944,<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> and made an overnight stop at [[Paramushiro]] in the northern [[Kuril Islands]] from 11 to 12 March 1944<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> before beginning a war patrol in the waters of the [[Aleutian Islands]].<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> After an uneventful patrol, she called at Ōminato from 9 to 11 April 1944<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> before proceeding to Yokosuka, which she reached on 13 April 1944.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/>

===Central Pacific===

''I-184'' departed Yokosuka on 20 May 1944 to carry food and supplies to the starving Japanese garrison on [[Mili Atoll]] in the [[Marshall Islands]].<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> She arrived at Mili on 12 June 1944, unloaded her cargo, and got back underway the same day.<ref name=combinedfleetI184/> 

On 13 June 1944, amid indications of an imminent American invasion of the [[Mariana Islands]], the commander-in-chief of the Combined Fleet, [[Admiral]] [[Soemu Toyoda]], activated Operation A-Go for the defense of the Marianas.<ref name=combinedfleetI184/> The same day, the commander of the 6th Fleet, [[Vice admiral|Vice Admiral]] [[Takeo Takagi]], ordered all submarines under his command to deploy in the central [[Pacific Ocean]] east of Marianas as part of the defense.<ref name=combinedfleetI184/> ''I-184''′s specific orders called for her to take up a patrol station in between those assigned to the submarines {{ship|Japanese submarine|I-5||2}} and {{ship|Japanese submarine|I-185||2}}.<ref name=combinedfleetI184/>

The [[Mariana and Palau Islands campaign|Marianas campaign]] began with American [[Amphibious warfare|amphibious landings]] on [[Saipan]] on 15 June 1944.<ref name=combinedfleetI184/> With the [[Battle of Saipan]] underway, Takagi′s ability to command the 6th Fleet from the fleet's headquarters on Saipan was disrupted, and command of the fleet passed to the commander of Submarine Squadron 7, [[Rear admiral|Rear Admiral]] [[Noboru Owada]], at [[Chuuk Atoll|Truk Atoll]] in the [[Caroline Islands]].<ref name=combinedfleetI184/> On 15 June, Owada ordered ''I-184'' to proceed to Saipan.<ref name=combinedfleetI184/> That day, ''I-184'' acknowledged the order and reported her estimated time of arrival at Saipan as 00:22 [[Japan Standard Time]] on 18 June. The Japanese never heard from her again.

===Loss===

The [[Battle of the Philippine Sea]] began on 19 June 1944<ref name=combinedfleetI184/> as Japanese naval forces moved to attack the American landing force at Saipan and the [[United States Fifth Fleet]] engaged the approaching Japanese. A U.S. Navy [[Grumman TBF Avenger|TBM-1C Avenger]] [[torpedo bomber]] of [[VT-60|Torpedo Squadron 60 (VT-60)]] flying an antisubmarine patrol from the [[escort aircraft carrier]] {{USS|Suwanee|CVE-27}} dropped below the cloud cover {{convert|20|nmi}} southeast of Saipan on 19 June and sighted ''I-184'' on the surface.<ref name=combinedfleetI184/> As ''I-184'' [[Crash dive|crash-dived]], the Avenger′s pilot dropped [[depth charge]]s just ahead of her track, sinking her at {{coord|13|01|N|149|53|E|display=inline,title}}.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> There were no survivors.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/>

On 12 July 1944,<ref name=combinedfleetI184/> the Imperial Japanese Navy declared ''I-184'' to be presumed lost with all 96 hands in the vicinity of Saipan.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/> The Japanese struck her from the [[Navy List]] on 10 August 1944.<ref name=ijnsubsiteI184/><ref name=combinedfleetI184/>

==Notes==
{{Reflist|30em}}

==References==
* {{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 book| last = Jentschura| first = Hansgeorg| first2 = Dieter |last2=Jung|first3=Peter |last3=Mickel| year = 1977| title = Warships of the Imperial Japanese Navy, 1869–1945| publisher = United States Naval Institute| location = Annapolis, Maryland| isbn = 0-87021-893-X|name-list-style=amp}}

{{Kaidai type submarine}}
{{June 1944 shipwrecks}}

{{DEFAULTSORT:I-184}}
[[Category:1942 ships]]
[[Category:Ships built by Yokosuka Naval Arsenal]]
[[Category:Kaidai-class submarines]]
[[Category:World War II submarines of Japan]]
[[Category:Maritime incidents in June 1944]]
[[Category:World War II shipwrecks in the Philippine Sea]]
[[Category:Ships sunk by US aircraft]]
[[Category:Japanese submarines lost during World War II]]
[[Category:Warships lost in combat with all hands]]
[[Category:Submarines lost with all hands]]