A little background history.
The IJN was one of the more youngers Navy of the world by 1941, founded by 1871 and following the best model in the world at this time: the Royal Navy.
Japan is a country with very limited availability of raws materials and minerals and the first tentatives of expansions to obtain resources were directed by natural spots near of home:
-The Peninsule of Korea
-China
With this last the younger IJN had started his "Bapteme of Fire" following a few years latter a scalations of tensions with the Imperial Russian forces.
That give place shortly to the Russian-Japanese war by 1904 with a big victoy for the Japanese forces, after battles like Tsushima or Port Arthur. That was also the consagration of the first great japanese Admiral: Heihachiro Togo , the father of the modern IJN.
His insignia ship at Tsushima, the battleship "Mikasa" is still today preserved a Yokosuka.
Other names followed latter to build little a little a wonderfull Navy ,names like Adm Hiraga (creator of the "Yubari" and the excelents "Furutaka", "Kako", "Aoba and "Kinugasa") and specially the well know Adm Isoruku Yamamoto , CO of IJN fleet from 1939.
THE IJN OF 1941
By 1941 the IJN was the third Navy of the world.
Some remarkable features of the IJN in this time:
-The best Carrier based aviation, deployed in 9 ships(Akagi, Kaga, Soryu, Hiryu, Shokaku, Zuikaku, Ryujo, Hosho, Zuiho). A 10th carrier was near to entry service, the Shoho, transformation of one submarine depot ship.
The carries were organized in Divisions commanded by very skilled High Rank Officers, specialist in aviation, like Adm Yamaguchi or Ozawa. Less prepared in the theme operations of naval aviation, the Admiral Nagumo, but he had the support, conseils and organisation of two excelents officers, Genda and Fuchida.
As observers of the other countries, the IJN had watched in details the results of the attacks by British planes to Taranto and the results of Matapan.Strategical speaking the IJN carrier force had not egal enemy by 1941.
The training and formation of the pilots was considered also the better worldwide by 1941 utilising also some of the best products of the Japanese aircraft industrie of the time
-Mitsubishi A6M2 "Zero"
-Nakajima B5N2 "Kate"
-Aichi D3A1 "Val"
Also forming parts of the Air Dispositive of IJN, several Kokutais land based of bombers ,fighters and recco planes and floatplanes.
To mention also, the top quality of weapons utilised by the IJN Aviation , torpedos ,cannons bombs,etc
-Excelent destroyers like the class "Fubuki", "Kagero", and latter "Yugumo" and "Akizuki" class.
The IJN was specially skilled in the utilisation of destroyer torpedo tactics, a lot of USN, Australian and British ships had payed the price, specially in the Salomons.
Also to mention, a natural disposition and training to performed well directed night attacks and ambushs.
Excelent optics in the IJN ships, many times enemy forces were sighted before the radar of this last can detect the presence of IJN ships aproaching. Commanders of IJN Destroyers Divisions were also some of the best of the world, mens like Raiso Tanaka, a "crack" in the famous "Tokyo Express" of the Salomons.
-The battleship line of IJN was considered one of the most formidable in the world.This force included the Kongo class (Kongo, Kirishima, Hiei and Haruna -this ships are more near to be considered as Battlecruisers), Fuso class (Fuso and Yamashiro), Ise Class (Ise and Hyuga),
Nagato class (Nagato and Mutsu) and the formidables Yamato class(Yamato and Musashi, the third example was converted in the supercarrier "Shinano").
Standard main battery was the 356mm, 406mm in the Nagato´s and 460mm in the Yamato´s
-A good balanced force of cruisers. Heavy cruisers of the IJN were more of a match for many allied ships, "Chokai" class for example, also the force usually was commanded by very skilled Admirals, like Mikawa in Savo Battle.
-Good submarines with incredible performances in range. Some class carried a recco floatplane like the "Glenn", and lattter the proyected "Seiran" for the type I-400.Many had carried pocket submarines in the attacks of Pearl Harbour, Madagascar,Diego García,Australian ports,etc.The only bombing operations realised over US territory were done by IJN submarine based floaplanes and cannon fire(also were utilised the explossives ballons).Torpedos of the Long Lance series were the better of the world, with incredible range, speed and explossive effect. One of the most famous torpedo attacks by IJN submarine was the attack by the I-19(Commander Takaichi Kinashi) the 15-09-42 sinken with a salvo the USN Carrier CV-7 Wasp(three torpedos), the destroyer O'Brien DD-415 and damaging with the last torpedo the Battleship North Carolina BB-55.
IJN submarines had also operated in the Indian ocean and in the Atlantic.I-8,I-30,I-29 and I-52 had making operations transport to the french port of Brest.And of course, this submarines were very wellcome by his colegues of the Kriegsmarine.
Were builded only three submarines of the gigantic I-400 class; this type was tasked to performed a proyected attack to the Panama Canal, utilising for that his complement of 3 "Seirans" bombers each,armed with specials torpedos to destroy the excluses. The IJA(Imperial Japanese Army) had also builded some submarines but utilised only as transports.
THE WEAKEST POINTS OF THE IJN
The IJN strategic line had proyected as main target a definitive battle with his enemie(s) some part near of the Marshall Islands. A battle style Jutland, with dozens of big battleships firing
colossal salvos of shells to destroy the enemy.This target was searched the whole war ,but the USN Admirals like Nimitz were experimented and previsors to avoid and eviting this type of encounter.
Only at Leyte this oportunity come near of be real, after Halsey had make a serie of strategic mistakes and Kurita was under inmense pressure to arrive a decission and had a clear vission of his very favorable tactical position .
The fleet was builded mainly allround of this objetive. For example subs strategic was the interception of the recco or advanced forces of the enemy or previous damaged warships.Enemy traffic attack was secondary. And that was a great mistake by the IJN , with the USN vulnerable supply line crossing the inmense Pacific.Only one torpedo was allowed to destroy a enemy cargo or tanker.Several USN supply ships damaged by one torpedo,avoid destruction, exactly for this order. This tactic were latter revised but that was too late.
The principes of IJN were fixed allround of a OFFENSIVE force , few attention was gived to the defense ; that is something including in the caracter and temperament of the Japanese militars generations of this time and his code of conduct.
The results of that , a very weak antisubmarine capacity of IJN. Subchasers were builded very latter in the war after the catastrofic losses in warships and merchant fleet by USN submarines.Destroyers were equipped with a limited number of depth charges , the place was reserved to reinforce AAA or other "really"offensive weapons.Asdic and hydrophones were quite good initially, but near of obsolete after the development of USN submarine tactics by 1943.The programme of construction of Escort Destroyers, like the "Matsu" or "Tachibana" class or the development of IJN AS planes were also too late to change the situation.Convoys were organized latter in the war, specially between Korea-China and Japan ,Philippines-Japan.By early 1942 many ships had sailed independently and the ships losses were minimal by USN submarines.The big chronical problem of the deficient american torpedos had saved in this periode many Japanese cargos and tankers.But the situation start to change drastically by latter 1942 and early 1943.From this periode the IJN start to study the possibility or organisation of convoys , specially tankers and troop transports.But the things were not so easy ,few escorts ships , not destroyers available for escort and the antagonism Army-Navy by the Japanese was too prononced and sometimes a really obstruccion and obstacle.
The AAA of the IJN like many others Navys of this periode was weak, the main AA MG was the 25mm ,a good weapon but only four were carried for example in a "Kagero" class destroyer.The AA battery was improved after the initial operations and by 1945 ,after lossing the umbrella of his carrier fighter protection, the IJN ships were a forest of AAA mounts placed in each space available.Inutil to say , that had augmented the weight of the ships in alarmants proportions.
Optics were excelent in telemeters and other equipment of this nature , but in modern combat is not enough and the radar development was very slow.The first two IJN ships with radar, were utilised in the Midway operation of June 1942.
Many of the planes of the IJN were prived absolutly of armour and protection of vitals parts.
Yes, there were very fast with incredible climb rate and maneuvrablity but also very vulnerable.
The Naval Aviation after the losses in the Battles of Coral Sea,Midway,Santa Cruz.Eastern Salomons,Salomons campaign,etc had few reserves of good trained pilots. The programme of training was accelerated in Japan but the performances and quality of the new pilots was drastically reduced.The apogee of this situation were the catastrofic carrier aviation losses by Ozawa carriers in the Battle of Mariannas in June 1944.
The losses of so many fleet tankers by USN submarines by early 1944 had forced the IJN to utilise the not refined oil of Tarakan to powered his fleet.This oil ,very pure,utilised directly in the boilers ,without refination was also extremely inflamable and volatil.He was the direct responsable of the losses of two of the main carriers of the Ozawa fleet en the Mariannas, Tahio and Shokaku, boths hits by USN submarines.The torpedo hits were not initially fatal for the ships,but shortly, the effect of the gases of the oil exiting of the ruptured fuel tanks had gived way to a serie of incontrolled explossions and furious fires, destroying and sinking both carriers.
The forces or Task Forces were directed at sea , by the Commander of the operation aboard usually of one battleship , like Yamamoto in the Battleship" Yamato" in Midway.That was the traditional form of direct the operations ,but this mode was not always effective,specially for combined great fleets. Radio transmission in a battleship or carrier are far of be ideal at sea to command a so big force, like this one deployed by Yamamoto at Midway.Nimitz had always directed the operations from Pearl Harbour giving his orders to his subordinates like Fletcher or Spruance aboard of the carriers and utilising for that the much more powerfull radio ground instalations.
Few flexibility , a lot of orders in the plans of operations IJN were too rigid ,too complicated, depending of a exact time syncronisation between forces with few possibilities of individual initiatives and taking also few count of possible problems or unwaited situations.Also Nimitz no had fall in this mistake; when he had self considered to not have a clear view of the situation, he had give the initiative to his operatives commanders.
Utilised several times by the IJN the tactic of placing a decoy ,a small force, a small carrier with few destroyers for example (like Eastern Salomons), to attract the USN forces and then engaged with a big strike of a carrier division placed near in ambush or a battleships-cruisers division at night.Operative range circle of IJN Air Groups was always greater as the USN Airgroups(Japanese planes were much less heavy)and more IJN planes can be prepared in the deck of ther carrier in preparation for a strike.(light planes need less lenght to take off from the carrier).
Like the British with the Kriegsmarine , the USN intelligence know the next moves of the IJN.The first desciprage codes were obtained from a sunk IJN submarine,early in the war.
After the death of Yamamoto by the P-38s based at Guadalcanal , the IJN had started to change his security codes.That was a mistake of Washington, partial justified by the sentiments againts the detested Yamamoto still too fresh in the memory of US citizens,autorities and medias after Pearl Harbour.
The order was gived to intercept the plane of Yamamoto and the advantage to know the japanese codes was loss.
THE SUCESS OF THE ALLIED SUBMARINES AGAINTS THE IJN
A list to see the sucess of the Allied Submarines in the Pacific againts the IJN.This list included ship losses by the IJN and not by the Japanese Merchant Navy.For obtain this incredible results the USN loss 45 submarines, the Royal Navy 2(Porpoise and Stratagem) and the Royal Dutch Navy 3(K VII, K XVI and O.20).
-USN US Navy
-HMS Royal Navy
-HNMS Royal Dutch Navy
BATTLESHIPS
Class Kongo(4 ships)
Kongo sunk by USN Sealion the 21-11-44
AIRCRAFT CARRIERS
Class Shinano(1 ship)
Shinano sunk by USN Archerfish the 29-11-44(this ship with his 71,890 t
is still today the more biggest enemy ship sunk by a submarine)
Class Tahio(1 ship)
Tahio sunk by USN Albacore the 19-06-44
Class Shokaku(2 ships)
Shokaku sunk by USN Cavalla the 19-06-44
Class Unryu(6 ships -3 completed)
Unryu sunk by USN Redfish the 19-12-44
Class Taiyo(3 ships)
Taiyo sunk by USN Rasher the 18-08-44
Unyo sunk by USN Barb the 16-09-44
Chuyo sunk by USN Sailfish the 04-12-43
Class Shinyo(1 ship)
Shinyo sunk by USN Spadefish the 17-11-44
Kamakura Maru(1 ship to be converted in carrier)
Sunk by USN Gudgeon the 28-04-43
Class Junyo(2 ships)
Junyo damaged by USN Redfish and Sea Devil; not returned to service
,broken up at Sasebo in 1947.
SEAPLANE CARRIERS
Mizuho class(1 ship)
Mizuho sunk by USN Drum the 02-05-42
SEAPLANE TENDERS
Kamikawa Maru class(9 ships)
Kagu Maru sunk by USN Bream and Ray the 04-11-44
Kamikawa Maru sunk by USN Scamp the 28-04-43
Kimikawa Maru sunk by USN Sawfish the 23-10-44
Kinugasa Maru sunk by USN Baya and Hawkbill the the 07-10-44
Sagara Maru damaged and written off after attack by USN Harder the 22-06-43
Sanuki Maru sunk by USN Spadefish the 28-01-45
Sanyo Maru sunk by USN Cabrilla the 26-05-44
HEAVY CRUISERS
Furutaka class(2 ships)
Kako sunk by USN S-44 the 10-08-42
Myoko class(4 ships)
Myoko damaged by USN Bergall the 13-12-44, nor repaired
Ashigara sunk by HMS Trenchant the 08-06-44
Takao class( 4 ships)
Takao damaged by USN Darter the 23-10-44; again damaged
at Singapore by British midget submarine XE-3, not repaired
Atago sunk by USN Darter the 23-10-44
Maya sunk by USN Dace the 23-10-44
LIGHT CRUISERS
Tenryu class(2 ships)
Tenryu sunk by USN Albacore the 18-12-42
Tatsuta sunk by USN Sandlance the 13-03-44
Kuma class(5 ships)
Kuma sunk by HMS Tally Ho the 11-01-44
Tama sunk by USN Jallao the 25-10-44
Oi sunk by USN Flasher the 19-07-44
Nagara class(6 ships)
Nagara sunk by USN Croaker the 07-08-44
Isuzu sunk by USN Charr and Gabilan the 07-04-45
Natori sunk by USN Hardhead the 18-08-44
Yubari class(1 ship)
Yubari sunk by USN Bluegill the 27-04-44
Agano class(4 ships)
Agano sunk by USN Skate the 17-02-44
DESTROYERS
Momi class(21 ships)
Yomogi sunk by USN Atule the 25-11-44
Tade sunk by USN Seawolf the 23-04-43
Wakatake class(8 ships)
Kuretake sunk by USN Razorback the 30-12-44
Sanae sunk by USN Bluefish the 18-11-43
Yugao sunk by USN Greenling the 10-11-44
Fuyo sunk by USN Puffer the 20-12-43
Karukaya sunk by USN Cod the 10-05-44
Minekaze class(15 ships)
Minekaze sunk by USN Pogy the 10-02-44
Okikaze sunk by USN Trigger the 10-01-43
Hakaze sunk by USN Guardfish the 23-01-43
Nadakaze sunk by HMS ? the 25-07-45
Shimakaze sunk by USN Guardfish the 13-01-43
Akikaze sunk by USN Pintado the 03-11-44
Hokaze sunk by USN Paddle the 06-07-44
Nokaze sunk by USN Pargo the 20-02-45
Numakaze sunk by USN Grayback the 19-12-43
Kamikaze class(9 ships)
Asakaze sunk by USN Haddo the 23-08-44
Matsukaze sunk by USN Swordfish the 09-06-44
Asanagi sunk by USN Pollack the 22-05-44
Yunagi sunk by USN Picuda the 25-08-44
Mutsuki class(12 ships)
Minazuki sunk by USN Harder the 06-06-44
Fubuki class(20 ships)
Usugumo sunk by USN Skate the 07-07-44
Shirakumo sunk by USN Tautog the 16-03-44
Isonami sunk by USN Tautog the 09-04-44
Shikinami sunk by USN Growler the 12-09-44
Sagiri sunk by HNMS K.16 the 24-12-41
Sazanami sunk by USN Albacore the 14-01-44
Akatsuki class(4 ships)
Ikazuchi sunk by USN Harder the 14-04-44
Inazuma sunk by USN Bonefish the 14-05-44
Hatsuharu class(6 ships)
Nenohi sunk by USN Triton the 04-07-42
Shiratsuyu class(10 ships)
Shigure sunk by USN Blackfin the 24-01-45
Samidare sunk by USN Batfish the 25-08-44
Yamakaze sunk by USN Nautilus the the 25-06-42
Umikaze sunk by USN Guardfish the 01-02-44
Suzukaze sunk by USN Skipjack the 26-01-44
Asashio class(10 ships)
Oshio sunk by USN Albacore the 20-02-43
Arare sunk by USN Growler the 05-07-42
Kagero class(18 ships)
Natsushio sunk by USN S-37 the 08-02-42
Urakaze sunk by USN Sealion the 21-11-44
Tanikaze sunk by USN Harder the 09-06-44
Yugumo class(20 ships)
Akigumo sunk by USN Redfin the 11-04-44
Kazegumo sunk by USN Rake the 08-06-44
Tamanami sunk by USN Mingo the 07-07-44
Kishinami sunk by USN Flasher the 04-12-44
Hayanami sunk by USN Harder the 07-06-44
Akizuki class(13 ships)
Shimotzuki sunk by USN Cavalla the 25-11-44
Matsu class(18 ships)
Momo sunk by USN Hawkbill the 15-12-44
Maki damaged by USN Plaice the 09-12-44,repaired and surrended
TORPEDO BOATS
Tomozuru class(4 ships)
Chidori sunk by USN Tilefish the 24-12-44
Otori class(8 ships)
Kasasagi sunk by USN Bluefin the 26-09-43
Sagi sunk by USN Gunnel the 08-11-44
Hiyodori sunk by USN Gunnel the 17-11-44
Kari sunk by USN Baya the 16-07-45
ESCORT AND PATROL
Etorofu class(14 ships)
Sado sunk by USN Haddo the 22-08-44
Matsuwa sunk by USN Harder the 22-08-44
Mutsure sunk by USN Snapper the 02-09-43
Wakamiya sunk by USN Gudgeon the 23-11-43
Hirado sunk by USN Growler the 12-09-44
Iki sunk by USN Raton the 24-05-44
Mikura class(8 ships)
Awaji sunk by USN Guitarro the 02-06-44
Nomi sunk by USN Tirante the 14-04-45
Kusagaki sunk by USN Guitarro the 07-08-44
Ukuru class(33 ships)
Hiburi sunk by USN Harder the 22-08-44
Shonan sunk by USN Hoe the 25-02-45
Kume sunk by USN Spadefish the 28-01-45
Yaku sunk by USN Hammerhead the 23-02-45
Oga sunk by USN Springer the 02-05-45
Hei Kaibo Kan Type C(118 ships)
No.7 sunk by USN Ray the 14-11-44
No.9 sunk by USN Gato the 14-02-45
No.13 sunk by USM Torsk the 14-08-45
No.15 sunk by USN Raton the 06-06-44
No.21 sunk by USN Seahorse the 06-10-44
No.25 sunk by USN Springer the 03-05-45
No.31 sunk by USN Tirante the 14-04-45
No.41 sunk by USN Sea Owl the 09-06-45
No.47 sunk by USN Torsk the 14-08-45
No.53 sunk by USN Besugo the 07-02-45
No.73 sunk by USN Sunfish the 16-04-45
Tei Kaibo Kan type D(102 ships)
No.4 sunk by USN Atule the 13-08-45
No.10 sunk by USN Plaice the 27-09-44
No.24 sunk by USN Archerfish the 28-06-44
No.28 sunk by USN Blenny the 14-12-44
No.38 sunk by USN Hardhead the 25-11-44
No.42 sunk by USN Puffer the 10-01-45
No.56 sunk by USN Bowfin the 17-02-45
No.64 sunk by USN Pipefish the 03-12-44
No.72 sunk by USN Haddo the 01-07-45
No.84 sunk by USN Hammerhead the 29-03-45
No.112 sunk by USN Barb the 18-07-45
No.144 sunk by USN Besugo the 02-02-45
MINELAYERS
Shirataka sunk by USN Sealion the 31-08-44
Itsukushima sunk by HNMS Zwaardvisch the 07-10-44
Kamome sunk by USN Halibut the 27-04-44
Okinoshima sunk by USN S-42 the 11-05-42
Tsugaru sunk by USN Darter the 29-06-44
Naryu sunk by USN Sennet the 16-02-45
Hirashima sunk by USN Sawfish the 27-07-43
Yurijima sunk by USN Cobia the 14-01-45
Hatsutaka sunk by USN Hawkbill the 16-05-45
Aotaka sunk by USN Pargo the 26-09-44
Eijo Maru sunk by USN Spadefish the 17-06-45
Ma 4 sunk by HMS Tally Ho the 20-11-44
Kahoku Maru sunk by USN Finback the 08-06-43
Mogamigawa Maru sunk by USN Pogy the 31-07-43
Tatsuharu Maru sunk by USN Balao the 19-03-45
MINESWEEPERS
W.3 sunk by USN Parche the 09-04-45
W.7 sunk by HMS Storm the 15-04-44
W.12 sunk by USN Besugo the 06-04-45
W.15 damaged by USN Tilefish the 05-03-45.Beached.
W.20 sunk by USN Trepang the 04-05-45
W.27 sunk by USN Runner the 10-07-45
W.28 sunk by USN Jack the 29-08-44
W.34 sunk by USN Chub the 21-05-45
W.38 sunk by USN Atule the 20-11-44
W.39 sunk by USN Threadfin the 20-07-45
Wa.104 sunk by HMS Stygian the 12-04-45
Wa.105 sunk by HMS Trenchant the 25-05-45
AUXILIAR MINESWEEPERS
Eguchi Maru No.3 Sunk by USN Shad the 06-09-44
Fuji Maru No.2 sunk by USN Shad the 21-09-44
Hinode Maru No.17 sunk by USN Spadefish the 11-04-45
Hinode Maru No.20 sunk by USN Barb the 21-08-44
Hoei Maru sunk by USN Skate the 29-09-44
Misago No.1 sunk by USN Cero the 15-04-45
Musashi Maru sunk by USN Narwhal the 16-07-42
Naruo Maru sunk by USN Gurnard the 25-12-43
Noshiro Maru No.2 sunk by USN Haddock the 01-04-44
Reisui Maru sunk by HMS ? the 25-12-44
Taito Maru sunk by USN Croaker the 16-08-44
Tama Maru sunk by USN Seadevil the 08-04-45
Togo Maru sunk by USN Cero the 15-04-45
Yoshino Maru sunk by USN Sandlance the 14-05-45
SUBMARINE CHASERS
Ch class(63 ships)
Ch 2 sunk by USN Blueback the 27-06-45
Ch 8 sunk by HMS submarines Trenchant and Terrapin the 04-03-45
Ch 13 sunk by USN Pickerel the 03-04-43
Ch 17 sunk by USN Springer the 28-04-45
Ch 25 sunk by USN Grunion the 15-07-42
Ch 27 sunk by USN Grunion the 15-07-42
Ch 30 sunk by USN Barbero the 24-12-44
Ch 50 sunk by USN Plaice the 18-07-44
Ch 54 sunk by USN Pollack the 25-03-44
Cha class(250 ships)
Cha 2 sunk by HMS Tally Ho the 06-10-44
Cha 37 sunk by USN Lizard Fish the 05-07-45
Cha 42 sunk by USN Hardhead the 23-06-45
Cha 50 sunk by USN Bluefish the 09-07-45
Cha 59 sunk by USN ? in July 1945
Cha 85 sunk by USN ? the 08-07-45
Cha 91 sunk by USN ? the 25-01-45
Cha 97 sunk by USN Sennet the 19-04-45
Cha 165 sunk by USN Albacore the 11-09-44
Cha 113(Ex HNMS "A") sunk by USN Hardhead the 23-06-45
Cha 117(ex HNMS Bantam)sunk by USN Hardhead the 23-07-45
AUXILIAR SUBMARINE CHASERS
Ganjitsu Maru No.1 sunk by USN Searaven the 14-01-43
Kaio Maru No.2 sunk by USN Cobia the 21-07-44
Kaiyo Maru No.2 sunk by USN Dace the 15-10-44
Kamo Maru sunk by USN Lapon the 18-07-44
Keihin Maru sunk by USN Sea Robin the 14-03-45
Kurama Maru sunk by USN Lapon the 18-07-44
Kyo Maru No.2 sunk by USN Puffer the 07-08-44
Misago Maru sunk by USN Bluegill the 13-08-44
Nanshin Maru sunk by USN Guitarro the 27-08-44
Ryusei Maru sunk by USN Queenfish the 08-11-44
Shiratori Maru sunk by ? the 12-04-45
Shunsei Maru No.5 sunk by USN Silversides the 31-05-42
Yusen Maru No.3 sunk by USN Cobia the 21-07-44
Yusen Maru No.11 sunk by USN Balao the 05-03-45
GUARDBOATS
Amiji Maru sunk by USN ? the 22-04-45
Asuka Maru sunk by USN ? the 25-05-43
Bangame Maru sunk by USN ? the 18-03-44
Chokai Maru sunk by USN Bowfin the 02-03-45
Daido Maru sunk by USN Spadefish the 12-06-45
Ebisu Maru No.5 sunk by USN Scorpion the 30-04-43
Ebon Maru sunk by USN Gato the 02-01-43
Hanshin Maru sunk by USN ? the 07-06-45
Heiwa Maru sunk by USN Dentuda the 18-06-45
Hinode Maru No.6 sunk by USN Bowfin the 04-09-44
Hokuryu Maru No.1 sunk by USN Cobia the 20-07-44
Hosho Maru No.3 sunk by USN Piper the 25-02-45
Isuzu Maru No.3 sunk by USN ? the 19-04-45
Isuzugawa Maru No.5 sunk by USN Batfish the 01-07-44
Iwaki Maru sunk by USN ? the 25-09-44
Jimbo Maru No.12 sunk by USN Gar the 02-05-43
Jusan Maru sunk by USN Tirante the 14-04-45
Kaiko Maru sunk by USN Trepang the 14-03-45
Kainan Maru No.7 sunk by USN Barb the 23-01-45
Kairyu Maru sunk by USN ? the 19-04-45
Kaiyo Maru sunk by HNMS Zwaardvisch the 15-10-44
Kaiyo Maru No.5 sunk by HMS ? the 02-09-44
Kamo Maru sunk by USN Batfish the 01-07-44
Kanno Maru No.3 damaged by USN Haddock the 14-02-45.W.O.?
Kikaku Maru No.6 sunk by USN Scabbardfish the 27-02-45
Kiri Maru No.2 sunk by USN Sea Pacher the 23-07-45
Kisei Maru sunk by USN Cavalla the 08-01-45
Koei Maru sunk by HNMS Zwaardvisch the 10-10-44
Kojo Maru sunk by USN ? the 16-11-44
Kosho Maru No.2 sunk by USN Cero the 15-04-45
Kotoshiro Maru No.8 sunk by USN Sennet the 13-02-45
Kunimiya Maru sunk by USN ? the 18-03-44
Kyoraku Maru No.3 sunk by USN Bumper the 20-07-45
Kyowa Maru No.2 sunk by USN Tilefish the 16-10-44
Meisho Maru sunk by USN Sturgeon the 19-05-44
Miyagi Maru sunk by USN Sterlet the 04-08-44
Miyasho Maru No.1 sunk by USN Sculpin the 19-06-43
Moji Maru sunk by USN Bonefish the 08-07-44
Nachiryu Maru No.12 sunk by USN Sterlet the 15-11-44
Nanshin Maru No.26 sunk by USN Threadfin the 01-02-45
Nanshin Maru No.27 sunk by USN ? the 15-09-42
Nanshin Maru No.28 sunk by USN ? the 03-10-44
Nichiei Maru No.2 sunk by USN ? the 07-01-45
Nichiran Maru No.3 sunk by USN Apoggon the 12-07-44
Otome Maru sunk by USN ? the 29-04-45
Otori Maru No.2 sunk by USN ? the 24-02-43
Reiko Maru sunk by USN Dentuda the 18-06-45
Roshu Maru sunk by USN Drum the 30-10-42
Ryuei Maru sunk by USN Bonefish the 07-07-44
Seiun Maru sunk by USN S-35 the 11-07-43
Shinko Maru No.10 sunk by USN ? the 04-06-44
Shinsei Maru sunk by USN ? the 20-03-43
Shinsei Maru No.83 sunk by USN Narwhal the 24-07-42
Shosei Maru No.15 sunk by USN Baya the 13-05-45
Taikai Maru No.3 sunk by USN Saury and Tambor the 16-11-44
Taiyo Maru No.3 sunk by USN ? the 16-01-44
Tajima Maru sunk by USN Tuna the 04-05-44
Takamiya Maru sunk by USN Swordfish the 06-07-44
Takatori Maru No.8 sunk by USN Flying Fish the 11-07-43
Tsukiura Maru sunk by USN Trepang the 17-03-45
Yawata Maru No.3 sunk by USN ? the 27-05-45
Yulin Maru sunk by USN ? the 04-09-43
Zensho Maru sunk by USN Sterlet the 04-08-44
GUNBOATS
Hashidate class(2 ships)
Hashidate sunk by USN Picuda the 22-05-44
Nankai(Ex HNMS Regulus) sunk by ? the 16-07-45
Kaiho Maru sunk by USN Sunfish the 19-04-45
AUXILIAR GUNBOATS
Anshu Maru sunk by USN Gurnard the 30-05-44
Aso Maru sunk by USN Gar the 09-05-43
Busho Maru sunk by USN Grevalle the 26-01-44
Choan Maru No.2 sunk by USN Silversides the 10-05-44
Chojusan Maru sunk by USN Queenfish the 09-11-44
Chosa Maru sunk by HNMS O.24 the 20-08-43
Chowa Maru sunk by USN Bowfin the 01-05-45
Chuwa Maru sunk by USN Trout the 10-02-42
Daido Maru sunk by USN Apogon the 04-12-43
Daigen Maru No.7 sunk by USN Croaker the 14-08-44
Delhi Maru sunk by USN Swordfish the 16-01-44
Edo Maru sunk by USN Sunfish the 13-08-43
Eifuku Maru sunk by USN Pampanito the 08-02-45
Eiko Maru sunk by HMS Stoic the 08-06-44
Fukuyama Maru sunk by USN Tang the 22-02-44
Hakkai Maru sunk by USN Sawfish the 05-05-43
Heijo Maru sunk by USN Spadefish the 06-02-45
Heijo Maru sunk by USN Albacore the 04-09-43
Hino Maru No.5 sunk by USN Kingfish the 10-10-43
Hirotama Maru sunk by USN Trout the 14-02-43
Hong Kong Maru sunk by USN Gunnel the 21-06-43
Hyakafuku Maru sunk by USN Plaice the 30-06-44
Ikushima Maru sunk by USN Stingray the 30-04-44
Kahoku Maru sunk by USN Finback the 08-06-43
Kaiho Maru sunk by USN Sunfish the 19-04-45
Kamitsu Maru sunk by USN Parche the 26-06-45
Kanko Maru sunk by USN Pickerel the 10-01-42
Kasagi Maru sunk by USN Swordfish the 28-01-44
Kasago Maru sunk by HNMS O.21 the 13-03-43
Katori Maru sunk by USN Growler the 01-01-43
Katsura Maru No.2 sunk by USN S-28 the 12-09-43
Keijo Maru sunk by USN S-44 the 21-06-42
Keiko Maru sunk by USN Seawolf the 08-11-42
Keishin Maru sunk by USN Pogy the 01-05-43
Kongosan Maru sunk by USN Trout the 04-05-42
Kosho Maru sunk by HMS Sea Rover the 22-05-44
Magane Maru sunk by USN Snook the 24-01-44
Man-Yo Maru sunk by USN Sea Robin the 05-03-45
Meiji Maru No.1 sunk by USN Sea Scorpion the 20-04-43
Myoken Maru sunk by USN Swordfish the 24-01-42
Nampo Maru sunk by USN Seawolf the 15-06-42
Nikkai Maru sunk by USN Ray the 26-11-43
Nissho Maru No.2 sunk by USN Trepang the 03-03-45
Saikyo Maru sunk by USN Stingray the 28-06-42
Santo Maru sunk by USN Gudgeon the 29-09-43
Seikyo Maru sunk by USN Kingfish the 23-10-42
Senkei Maru sunk by USN Amberjack the 07-10-42
Sen-Yo Maru sunk by USN Growler the 25-08-42
Shinko Maru No.1 sunk by HNMS O.19 the 09-01-45
Shinkyo Maru sunk by USN Bowfin the 25-03-44
Shinyo Maru No.5 sunk by USN Triton the 18-02-42
Shoei Maru sunk by HMS Tally Ho the 16-12-44
Shoei Maru sunk by USN Whale Ho the 25-05-43
Shoko Maru sunk by USN Pargo the 01-12-43
Shosei Maru sunk by USN Silversides the 20-05-44
Shotoku Maru sunk by USN Tunny the 28-06-44
Shuri Maru sunk by USN Tautog the 21-01-45
Taiko Maru sunk by USN Sandlance the 14-07-44
Terushima Maru sunk by USN Pollack the 18-05-43
Tomitsu Maru sunk by USN Seadog the 22-10-44
Unkai Maru No.10 sunk by USN Cobia the 17-07-44
Yamazato Maru sunk by HNMS O.21 the 22-04-43
Yoshida Maru sunk by USN Flasher the 18-01-44
AUXILIAR CRUISERS
Awata Maru sunk by USN Grayback the 22-10-43
Saigon Maru sunk by USN Flasher the 18-09-44
Gokoku Maru sunk by USN Barb the 10-10-44
AUXILIAR SUBMARINE DEPOT SHIPS
Manja Maru sunk by USN Atule the 29-11-43
Hie Maru sunk by USN Drum the 17-11-43
Nagoya Maru sunk by USN Herring the 01-01-44
Yasukuni Maru sunk by USN Trigger the 31-01-44
SUPPLY SHIPS
Mamiya sunk by USN Sealion the 20-12-44
Kurasaki sunk by USN Raton the 14-11-44
Nozaki sunk by USN Dace the 28-12-44
Muroto sunk by USN Seadog the 22-10-44
Iwashiro Maru sunk by USN Whale the 15-01-43
Kamoi Maru sunk by USN Wahoo the 10-10-42
Sansei Maru sunk by USN Sealion the 28-06-44
Sansei Maru II sunk by USN Haddock the 15-09-43
Shinsei Maru No.6 sunk by USN Tambor the 21-08-42
Shinyubari Maru sunk by USN Sunfish the 23-02-44
Soyo Maru sunk by USN Pogy the 07-12-43
Takunan sunk by USN Trepang the 01-10-44
Yodogawa Maru sunk by USN ? the 11-05-43
FLEET TANKERS
Erimo damaged by HNMS O.15 the 04-03-42.Beached
Shiriya sunk by USN Trigger the 21-09-43
Tsurumi sunk by USN Cero the 05-08-42
Ondo damaged by USN Bluegill the 18-11-43.Beached
Hayamoto damaged by ? ,broken up at Singapore
Hayasui sunk by USN Bluefish the 19-08-44
Arima Maru sunk by USN Haddock the 03-04-43
Azuma Maru sunk by USN Tinosa the 03-12-43
Choko Maru sunk by USN Tang the 25-02-44
Goyo Maru sunk by USN Tambor the 03-02-44
Kozui Maru sunk by USN Grayback the 14-10-43
Matsumoto Maru sunk by USN Tang the 25-10-44
MERCHANT TANKERS UTILISED AS FLEET TANKERS
Akatsuki Maru sunk by USN Saury the 28-05-43
Ashizuri sunk by USN Puffer the 30-01-43
Hishi Maru No.2 sunk by USN Haddo the 09-11-44
Honan Maru sunk by USN ? the 28-03-45
Itsukushima Maru sunk by USN Bergall the 27-10-44
Kaijo Maru No.2 sunk by USN Grampus the 05-03-42
Kenyo Maru sunk by USN Guardfish the 14-01-44
Kinrei Maru sunk by USN Hammerhead the 06-05-45
Kiyo Maru sunk by USN Rasher the 04-01-44
Kokuyo Maru sunk by USN Bonefish the 30-07-44
Kyoei Maru No.2 sunk by USN Dace the 27-07-44
Kyoei Maru No.3 sunk by USN Bumper the 19-07-45
Kyoko Maru sunk by USN Ray the 27-12-43
Nichei Maru sunk by USN Besugo the 06-01-45
Nippon Maru sunk by USN Scamp the 14-01-44
Nisshin Maru sunk by USN Crevalle the 06-05-44
Nisshin Maru No.2 sunk by USN Seawolf the 17-04-43
Nissho Maru sunk by USN Hoe the 25-02-44
Ogura Maru No.2 sunk by USN ? the 16-09-44
Ogura Maru No.3 sunk by USN Cod the 23-02-44
Omurosan Maru sunk by USN Flasher the 22-12-44
Ryuei Maru sunk by USN Kingfish the 02-01-44
San Clemente Maru sunk by USN Seal the 04-05-43
San Pedro Maru sunk by USN Jack the 25-06-44
San Ramon Maru sunk by USN ? the 27-11-43
Sanraku Maru sunk by USN Trout the 15-06-43
Shioya sunk by USN Rasher the 08-06-44
Shoyo Maru sunk by USN Trigger the 21-09-43
Takasaki sunk by USN Puffer the 05-06-44
Takatori Maru No.1 sunk by USN Tang the 01-07-44
Tarakan Maru sunk by USN Sea Robin the 06-01-45
Tatekawa Maru sunk by USN Gurnard the 24-05-44
Teiyo Maru sunk by USN Rasher the 19-08-44
Tennan Maru sunk by USN Silversides the 23-10-43
Terukawa Maru sunk by USN Skate the 21-12-43
Toa Maru sunk by USN Searaven the 25-11-43
Toei Maru sunk by USN Silversides the 18-01-43
Toen Maru sunk by USN Thresher the 02-03-43
Toho maru sunk by USN Gudgeon the 29-03-43
Tonan Maru No.2 sunk by USN Bonefish the 22-08-44
Yamazuru Maru sunk by USN Seawolf the 14-01-44
Yuho Maru sunk by USN Pargo the 26-11-44
OTHER TANKERS
Hosei Maru sunk by HNMS O.19 the 10-04-45
Kirishima Maru sunk by USN Bowfin the 25-09-43
Matsumoto Maru sunk by USN Tang the 25-10-44
Nampo Maru sunk by USN Grayback the 24-02-44
Nippo Maru sunk by USN Bergall the 27-10-44
Ryoei Maru sunk by USN Bashaw the 05-03-45
Shinko Maru sunk by USN Puffer and Bluefin the 12-08-44
Taihosan Maru sunk by USN Bluefish the 04-03-44
Teiyo Maru sunk by USN Rasher the 19-08-44
WATER TANKERS
Amakusa Maru No.1 sunk by USN Triton the 24-12-42
Kisogawa Maru sunk by HMS Tally Ho the 10-11-43
Taihosan Maru sunk by USN Plunger the 12-03-43
TRANSPORTS
Akashisan Maru sunk by USN Sandlance the 03-03-44
Aki Maru sunk by USN Crevalle the 26-07-44
Akita Maru sunk by HNMS O.19 the 10-01-42
America Maru sunk by USN Nautilus the 06-03-44
Aratama Maru sunk by USN Seahorse the 08-04-44
Asama Maru sunk by USN Atule the 01-01-44
Asosan Maru sunk by HNMS O.16 the 12-12-41
Atlantic Maru sunk by USN Picuda the 30-03-44
Atlas Maru sunk by USN Pomfret the 03-11-44
Awa Maru sunk by USN Queenfish the 01-04-45
Awaji Maru sunk by USN Picuda the 21-09-44
Bandai Maru sunk by HNMS O.24 the 21.02-43
Banshu Maru No.31 sunk by USN Trepang the 07-12-44
Caroline Maru sunk by USN Blackfin the 01-11-44
Ceylon Maru sunk by USN Pogy the 27-02-44
Chihaya Maru sunk by USN Seahorse the 02-11-43
Chiyo Maru sunk by USN Shark the 02-06-44
Choko Maru sunk by USN Gudgeon the 21-10-42
Choko Maru sunk by USN Sturgeon the 28-03-42
Choko Maru No.2 sunk by USN Albacore the 12-01-44
Eiko Maru sunk by USN Seadragon the 24-10-44
Fusa Maru Damaged by USN Burrfish and Ronquil the 17-11-44.W.O.
Hakonesan Maru sunk by USN Greenling the 18-10-42
Hakozaki Maru sunk by USN Balao the 19-03-45
Hakusan Maru sunk by USN Flier the 04-06-44
Hakutetsu Maru No.7 sunk by USN Pipefish the 12-09-44
Hakuyo Maru sunk by USN Seal the 25-10-44
Heiwa Maru sunk by USN Raton the 24-12-43
Heiyo Maru sunk by USN Whale the 21-01-43
Hie Maru sunk by HNMS K.XIV the 23-12-41
Hikade Maru sunk by USN Batfish the 24-01-44
Hino Maru No.3 sunk by USN Kingfish the 07-12-42
Hinode Maru sunk by USN Silversides the 10-06-43
Hiyoshi Maru sunk by USN Gunnel the 04-12-43
Hokko Maru sunk by USN Harder the 19-11-43
Hokuriki Maru sunk by USN Lapon the 18-03-44
Hokusho Maru sunk by USN Narwhal the 12-09-43
Horaisan Maru sunk by USN Silversides the 20-05-44
Iwaki Maru sunk by USN Herring the 01-06-44
Jozan Maru sunk by USN Cero the 17-02-44
Jusan Maru sunk by USN Finback the 16-12-43
Kaihei Maru sunk by USN Seawolf the 15-04-43
Kaika Maru sunk by USN Blackfish the 16-04-44
Kaiko Maru sunk by USN Sandlance the 23-02-44
Kainan Maru sunk by HMS Stoic the ?
Kaishin Maru No.2 sunk by HNMS O.19 the 16-11-44
Kaisho Maru sunk by USN Tullibee the 22-08-43
Kamoi Maru sunk by USN Raton the 26-11-43
Kanto Maru sunk by USN Saury the ?
Kasuga Maru No.2 sunk by HNMS O.21 the 13-03-43
Kasumi Maru sunk by HMS Taurus the 12-05-44(mined)
Katori Maru sunk by HNMS K.XIV the 23-12-41
Katsuragi Maru sunk by USN Sturgeon the 01-10-42
Keizan Maru sunk by USN Kete the 10-03-45
Keizan Maru sunk by USN S-31 the 26-10-42
Kenan Maru sunk by USN Sandlance the 03-05-44
Kenryu Maru sunk by USN Snapper the ?
Kenyo Maru sunk by USN Whale the 23-03-43
Kimishima Maru sunk by USN Plunger the 23-12-44
Kimposan Maru sunk by USN Greenling the 16-01-43
Kinai Maru sunk by USN Plunger the 10-05-43
Kinka Maru sunk by HNMS O.16 the 12-12-41
Kinshu Maru sunk by USN Hake the 17-06-44
Kiri Maru No.8 sunk by USN Greeling the 07-11-44
Kojun Maru sunk by USN Bluegill the 13-08-44
Konei Maru sunk by USN Peto the 01-12-42
Korei Maru sunk by HNMS O.19 the 10-09-44
Kosei Maru sunk by USN Thresher the 27-01-44
Kosei Maru sunk by USN Sargo the 11-11-43
Koto Maru sunk by USN Barb the 31-05-44
Koto Maru No.2 sunk by USN Flasher the 07-07-44
Koyo Maru sunk by USN Snook the 23-02-44
Manju Maru sunk by USN Pargo the 29-11-43
Manko Maru sunk by USN Parche the 30-07-44
Manryu Maru sunk by USN Sunfish the 16-04-45
Mantai Maru sunk by USN Guardfish the 16-07-44
Meiten Maru sunk by USN Tautog the 20-06-43
Meiyo Maru sunk by USN S-38 the 08-08-42
Miho Maru sunk by USN Skate the 15-07-45
Miho Maru sunk by USN Trepang the 30-04-45
Miike Maru sunk by USN Trigger the 27-04-44
Mikage Maru No.20 sunk by USN Porpoise the 18-07-43
Misaki Maru sunk by USN Barbel the 14-11-44
Misaku Maru sunk by USN Seahorse the 09-04-44
Mitakesan Maru sunk by USN Sandlance the 11-05-44
Montevideo Maru sunk by USN Sturgeon the 01-07-42
Muko Maru sunk by USN Thresher the 12-11-43
Myoko Maru sunk by USN Drum the 17-06-43
Nachizan Maru sunk by USN Trigger the 13-11-43
Namman Maru sunk by USN Flying Fish the 27-10-43
Naniwa Maru sunk by USN Gudgeon the 03-08-42
Nankei Maru sunk by USN Sealion the 12-09-44
Nichiryo Maru sunk by USN Bonefish the 01-12-43
Nikko Maru sunk by USN Harder the 20-11-43
Nippo Maru sunk by USN Skate the 16-07-44
Nissei Maru sunk by USN ? the 17-11-42
Noshiro Maru sunk by USN Guavina the 26-04-44
Ohio Maru sunk by HNMS O.23 the 02-08-42
Okitsu Maru sunk by USN Skipjack the 26-01-44
Otori Maru sunk by USN Ray the 20-05-44
Oyo Maru sunk by USN Hammerhead the 20-10-44
Ryotaku Maru sunk by USN Trout the 22-09-43
Ryujin Maru sunk by USN Tench the 04-06-45
Sagami Maru sunk by USN ? the 03-11-42
Sansei Maru sunk by USN Sawfish the 08-12-43
Seian Maru sunk by USN Snapper the 01-10-44
Seizan Maru sunk by USN Gar the 20-08-43
Seizan Maru No.2 sunk by USN Gurnard the 20-08-43
Setsuyo Maru sunk by USN Greenling the 04-10-42
Shiganoura Maru sunk by USN Snook the 30-11-43
Shigure Maru sunk by USN Seadragon the 10-10-42
Shinkoku Maru sunk by USN Halibut the 18-02-43
Shinroku Maru sunk by USN Tench the 09-06-45
Shinyo Maru sunk by USN Paddle the 07-09-44
Shinyo Maru No.8 sunk by USN Cabrilla the 07-10-44
Shirane Maru sunk by USN Pogy the 05-05-44
Shirogane Maru sunk by USN Amberjack the 19-09-42
Shobu Maru sunk by HMS Sea Rover the 08-03-44
Shohei Maru sunk by USN Cod the 10-05-44
Shoho Maru sunk by USN Pomfret the 25-11-44
Shoho Maru sunk by USN Greenling the 31-12-43
Shoju Maru sunk by USN Pike the 05-08-43
Shoka Maru sunk by USN Tautog the 25-05-42
Shokei Maru sunk by USN Spadefish the 08-09-44
Shoken Maru sunk by USN Silversides the 29-05-44
Shozan Maru sunk by USN Jack the 26-06-43
Sugiyama Maru sunk by USN ? the 15-11-44
Suiten Maru sunk by USN Sea Robin the 03-03-45
Sumatra Maru sunk by HMS Trenchant the 28-10-44
Suwa Maru sunk by USN Finback and Seadragon the 05-04-43
Taganoura Maru sunk by USN Pollack the 03-09-43
Taian Maru sunk by USN Gar the 23-01-44
Taikoku Maru sunk by USN Sandlance the 17-05-44
Tairu Maru sunk by HNMS O.19 the 10-01-42
Taito Maru sunk by USN Flying Fish the 25-05-44
Tama Maru sunk by USN Guavina the 04-07-44
Tamahime Maru sunk by USN Shark the 05-06-44
Tamashima Maru sunk by USN Spearfish the 30-01-44
Tarushima Maru sunk by USN Seawolf and Whale the 18-01-44
Tatsuho Maru sunk by USN Haddock the 22-08-42
Tatsuta Maru sunk by USN Tarpon the 08-02-43
Teia Maru sunk by USN Rasher the 18-08-44
Temposan Maru sunk by USN Silversides the 29-12-43
Tenzan Maru sunk by USN S-37 the 08-07-42
Toan Maru sunk by USN Sailfish the 24-08-44
Toei Maru sunk by USN Seahorse the 01-02-44
Toho Maru sunk by USN Pintado the 01-06-44
Tokai Maru sunk by USN Snapper the 27-08-43
Tokiwasan Maru sunk by USN Bang the 09-09-44
Toko Maru sunk by USN Ray the 12-10-44
Tonei Maru sunk by USN Peto the 01-10-43
Toro Maru sunk by HNMS K.XII the 12-12-41
Tosan Maru sunk by HNMS O.16 the 12-12-41
Tosei Maru sunk by USN Tuna the 12-12-43
Tottori Maru sunk by USN Hammerhead the 15-05-45
Toyo Maru sunk by USN Jack the 26-06-43
Toyo Maru No.2 sunk by USN Tunny the 02-04-43
Toyo Maru No.3 sunk by USN Ronquil the 24-08-44
Toyohara Maru sunk by USN Tuna the 15-05-42
Toyooka Maru sunk by USN Queenfish the 09-09-44
Tsunushima Maru sunk by USN Gato the 20-10-43
Tsuruga Maru sunk by HNMS K.XVIII the 23-01-42
Udo Maru sunk by USN Harder the 19-11-43
Unkai Maru No.12 sunk by USN Blackfin the 01-11-44
Uyo Maru sunk by USN Sailfish the 21-12-43
Wakamiyasan Maru sunk by USN Sea Devil the 14-06-45
Yamafuku Maru sunk by USN Snook the 28-11-43
Yamakuni Maru sunk by USN Swordfish the 14-01-44
Yamatama Maru sunk by USN Bluegill the 07-08-44
Yanagawa Maru sunk by USN Bashaw the 08-08-44
Yoko Maru sunk by USN Harder the 12-09-43
Yoshinogawa Maru sunk by USN Nautilus the 09-01-43
Zenyo Maru sunk by HNMS O.23 the 02-08-42
ARMED MERCHANT CRUISERS
Taichu Maru sunk by USN Halibut the 12-04-44
Tainan Maru sunk by USN Tang the 25-06-44
DEPOT SHIPS
Banshu Maru No.17 sunk by USN Gunnel the 19-11-44
Teishu Maru sunk by USN Bream the 28-04-45
COLLIER SHIPS
Ishikari Maru sunk by USN Grayback the 17-03-42
Mikage Maru No.18 sunk by USN Silversides the 10-05-44
Unkai Maru No.1 sunk by USN Pollack the 07-01-42
STORES SHIPS AND FRIGORIFIC
Chichibu Maru sunk by USN Gar the 13-03-42
Chiyo Maru sunk by USN Tambor the 26-05-44
Hokkai Maru sunk by USN Scabbardfish the ?
Hokko Maru sunk by USN Picuda the 20-03-44
Hyuga Maru sunk by USN Flying Fish the 16-03-43
Kitami Maru sunk by USN ? the 17-04-42
Kosei Maru sunk by USN Tunny the 08-04-43
Suruga maru sunk by USN Gato the 15-02-43
AMMUNITION SHIPS
Naruto Maru sunk by USN Whale the 08-08-43
Nichiro Maru sunk by USN Sargo the 17-02-44
Nisshun Maru sunk by USN Drum the 18-04-43
Onoe Maru sunk by USN Raton the 26-11-44
REPAIR SHIPS
Oregon Maru sunk by USN Salmon the 17-11-42
Shoei Maru sunk by USN S-44 the 12-05-42
Yamabiko Maru sunk by USN Steelhead the 10-11-44
Yamashimo Maru sunk by USN Tang the 22-02-44
SALVAGE VESSEL
Hokuan sunk by HMS Taurus the 22-04-44
SURVEY SHIPS
Kyodo Maru sunk by USN Lapon the 17-07-44
TORPEDO RECOVERY SHIPS
Nihonkai Maru sunk by USN Flounder the 17-06-44
Shinshu Maru sunk by USN Thresher the 09-07-42
HOSPITAL SHIPS
Hakuai Maru sunk by USN Apogon the 18-06-45
Kosai Maru sunk by USN Narwhal the 08-08-42
LANDING SHIPS
T.1 type(22 ships)
T.12 sunk by USN Pintado the 13-12-44
T.15 sunk by USN Tautog the 17-01-45
T.103 type(75 ships)
T.104 sunk by USN Pintado the 13-12-44
T.105 sunk by USN Trepang the 11-10-44
T.138 sunk by USN Kingfish the 26-10-44
T.146 sunk by USN Trepang the 28-04-45
T.151 sunk by USN Besugo the 23-11-44
AUXILIAR LANDING SHIPS
Mayasan Maru sunk by USN Picuda the 17-11-44
Tamatsu Maru sunk by USN Spadefish the 19-08-44
SUBMARINES
RO.112 sunk by USN Batfish the 11-02-45
RO.113 sunk by USN Batfish the 12-02-45
I-22 sunk by USN Skate the 10-06-45
I-28 sunk by USN Tautog the 17-05-42
I-29 sunk by USN Sawfish the 27-02-42
I-34 sunk by HMS Taurus the 13-11-43
I-42 sunk by USN Tunny the 23-03-44
I-43 sunk by USN Aspro the 15-02-44
I-64 sunk by USN Triton the 17-05-42
I-66 sunk by HMS Telemachus the 17-07-44
I-68 sunk by USN Scamp the 27-07-43
I-73 sunk by USN Gudgeon the 27-01-42
I-183 sunk by USN Pogy the 29-04-44
I-354 sunk by USN Sea Devil the 15-09-44
I-365 sunk by USN Scabbardfish the 28-11-44
I-371 sunk by USN Lagarto the 24-02-45
I-373 sunk by USN Spikefish the 14-08-45
Allied submarine operations in the Pacific
-
Dave Saxton
- Supporter
- Posts: 3148
- Joined: Sat Nov 27, 2004 9:02 pm
- Location: Rocky Mountains USA
By the moment included only IJN losses and is still partial because there were certainly more ships, specially transports and tankers.
Sometimes Is difficult to separe both services , the IJN and the Japanese Merchant marine; there were also thousands of junks and wood builded cargos in the last years of WWII.
Sometimes Is difficult to separe both services , the IJN and the Japanese Merchant marine; there were also thousands of junks and wood builded cargos in the last years of WWII.