This article refers to plans for the incorporation and development of special or secret weapons in Imperial Japan during the first part of the Showa era, for the Second Sino-Japanese war and World War II, that were originally hidden from public knowledge to protect their efficacy. Weapons prohibited by the Geneva Protocol were of specific interest to Japan, since it was thought that if a weapon was banned then it must be particularly effective.
The United States and Germany are more famous for their development of special weapons, but Japan and Russia to a lesser extent both pursued weapons development.
The weapons developed by Japan included biological, chemical, and advanced conventional weapons. A diverse cross section of institutions and individuals in wartime Japan participated in various areas of development, such as The Munitions Ministry (Japan), the Tokyo Imperial University, the Riken (Japanese Institute of Physics and Chemical Research), the Black Dragon Society, the Mitsubishi business conglomerate, and the Nakajima Company. Military units involved included the Kempeitai, First Tachikawa Army Arsenal, Sagami Army Arsenal, and Yokosuka Naval Arsenal.
With the reinforcement of the defenses of the homeland, a strong desire arose within Imperial General Headquarters to improve the military situation by the invention of Special or Secret weapons for decisive combat. In order to apply science to military problems, from every aspect, IGHQ therefore appealed to scholars and technical experts for their co-operation.
Among the various assorted types of such weapons intended for decisive battle, the Japanese Army made efforts to put infra-red radiation to practical use. They tried to perfect heat-seeking bombs, in order to sink American troopships, with a 100% certainty of kill. This was expected to retrieve Japan's fortunes in one fell swoop.
In mid-1944, experimentation with these projectiles was carried out near Lake Hamana, in co-operation with many scholars and technicians. Difficult problems appeared in succession, however, requiring resolution, and the bombs could not be put to practical use. Other secret weapons were evaluated with similar results.
Since the war situation was coming to an end before the completion of thermal-ray weapons, IGHQ was obliged to rely upon ramming techniques: Suicide ships or "special-attack" planes which could be easily produced in large numbers. Weapons for decisive combat thus came to mean suicidal expedients.
Another project—this one slightly more successful—was the Fire balloon (fūsen bakudan), a paper-enveloped hydrogen balloon carrying a small bomb, which actually could reach the United States by taking advantage of the jet stream, which the Japanese were the first to discover. For six months starting in November 1944, the Japanese Army's Special Balloon Regiment released balloons (totaling some 9,000). The object was not necessarily to inflict casualties but to damage morale in the U.S.. In practice little damage was caused, only six people killed and forest fires started. The Japanese were convinced the campaign did no damage due to the suppression of news of the balloons.
At Japanese Army schools, the students were not very well trained in science and technology. Infantry remained the backbone of the Japanese Army, as in olden days. Spiritual strength was considered to be the primary element in the acquisition of victory.
With the deterioration in the war situation, there was a growing desire within military circles to perfect miraculously effective weapons.
Nevertheless, it became abundantly clear that the low scientific level of the nation could not possibly yield elaborate weapons. Thus, during the course of the war, the gap between the Japanese and the American scientific potential for national defense grew ever wider with the passage of time.
Weaknesses in national science were certainly a major factor in Japan's loss of the war, but poorness and neglect of science were not attributable to the Japanese Army alone. It may well have been because the Japanese adopted principles of makeshift expediency ever since the Meiji era.
The Japanese Army's attitude toward technology incurred many kinds of great criticism from private sources at the time, the major points being the following:
The Japanese Army keeps matters tightly secret.
Owing to a plethora of research facilities, there is no clear definition of individual responsibility.
The right technical experts are not assigned to the right posts, since the Japanese Army's own technicians are put in charge of the units; etc.
Rifles:
Type 5 rifle
Infantry protection:
various types of body armor
Rocket Antitank launchers:
Type 4 70 mm AT Rocket Launcher
Type 5 45 mm AT recoilless gun launcher
Type 5 45 mm Recoilless Gun
Experimental 41 cm Howitzer
Type 90 24 cm Railway Gun
Anti-aircraft cannons:
Type10 120 mm Anti-Aircraft Gun
Type 3 80 mm Anti-Aircraft Gun
Type 3 12 cm AA Gun
Type 5 15 cm AA Gun
Type 4 20 m Twin AA Machine Cannon
Type 2 20 mm AA Machine Cannon
Mortars:
Type 2 120 mm Infantry Mortar
Rocket Launchers:
Experimental 70 mm "Ta-Dan" Rocket Launcher
Type 4 Experimental 70 mm Rocket Artillery
Experimental 90 mm Rocket Artillery Model 1
Experimental 90 mm Rocket Artillery Model 2
Experimental 90 mm Rocket Artillery Model 3
Experimental 90 mm Airborne Rocket Artillery
Type 4 Experimental 200 mm Rocket Artillery
Type 100 Bomb Projection Rocket Launcher
Type 4 Experimental 200 mm shipboard Rocket Artillery
Experimental 200 mm and 240 mm Common Wooden Rocket Launcher Model 1
Experimental 200 mm and 240 mm Common Wooden Rocket Launcher Model 3
Experimental 200 mm and 240 mm Common Wooden Triple Rocket Launcher
Type 4 Experimental 200 mm Wooden Triple Rocket Launcher
Type 4 Experimental 240 mm Rocket Artillery
Type 4 Experimental 400 mm Rocket Artillery
Type 4 Experimental 400 mm Wooden Rocket Artillery
25 mm Rocket Gun
80 mm Anti-Tank Rocket Launcher
100 mm Anti-Tank Rocket Launcher
120 mm Rocket Launcher
120 mm Six-Rocket Launcher
200 mm Rocket Launcher Model 1
200 mm Rocket Launcher Model 2
200 mm Rocket Launcher Model 3
450 mm Heavy Rocket Launcher
No. 6 Ground Use Bomb Projection Rocket Launcher Model 11
No. 6 Ground Use Bomb Projection Rocket Launcher Model 13
Type 3 Rocket Launcher Model 1
Type 3 Rocket Launcher Model 2
Type 3 Rocket Launcher Model 2 Modify 1
Rocket Launchers (carrier-based):
75 mm Blast-Off Rocket Launcher
120 mm Rocket Launcher
120 mm 28-Rocket Launcher
120 mm 30-Rocket Launcher
150 mm Rocket Depth Bomb Launcher
Landing Craft Carrier "Shinshu Maru"
Landing Craft Carrier Model Ko, Otsu, Hei
Tank Landing Ship "SS-Tei" and "SB-Tei"
Submarine-chaser "Karo-Tei"
Fast Transport Vessel "Yi-Go"
Transport Submarine "Maru-Yu"
Suicide-Attack Motorboat "Maru-Re"
Coastal Defence Motorboat "Maru-ni" – Used in conjunction with the Experimental Manufacture Use 120 kg Depth Charge (2 per boat).
Submersible Gun Mount Model 1 – Anti-Landing Craft, 2 man crew, 20mm Type 98 automatic cannon and 200 rounds of ammunition, or 37mm Type 4 ship gun with 60 rounds.
Submersible Gun Mount Model 2 – Anti-Landing Craft, 2-3 man crew, 7.5 cm small craft gun.
Submersible Pillbox Model 3 – mobile supply carrier/Anti-Landing Craft minelayer (115 mines).
The Japanese investigated nuclear weapons but progressed no further than laboratory experiments.
Chemical and biological weapons research was carried out by Unit 731, Unit 100, Unit 516 and other similar sections. Some of the unit commanders were prosecuted for war crimes, while others, such as Unit 731, were granted immunity from prosecution in exchange for sharing biological warfare secrets with the American military.
Advanced aircraft and missiles
This section analyzes some advanced types of Army and Navy aircraft:
Bombers:
Land Based Light/Medium/heavy Bombers:
Kawasaki Ki-119 Light Bomber/Escort Fighter
Rikugun Kogiken Plan II Light Bomber
Rikugun Kogiken Plan III Light Bomber
Nakajima Ki-82
Rikugun Kogiken Plan VI Heavy Bomber
Tachikawa Ki-74 Experimental Long Range Reconnaissance Bomber ("Patsy")
Nakajima Ki-85 "Shinzan" ("Liz")
Kawasaki Ki-91 Experimental Heavy Bomber
Tachikawa Ki-77 A-26 Long Range Experimental Aircraft
Mitsubishi G7M1 "Taizan" Ground Bomber
Kawanishi Type 17 Experimental Ground Bomber (K-100)
Nakajima G8N "Renzan" ("Rita") Heavy Bomber
Nakajima G10N1 "Fugaku" Super Heavy Bomber, literally a Japanese equivalent to Germany's Amerika Bomber
Kawanishi TB Super Heavy Bomber
Kugisho P1Y1 "Ginga" Model 11 ("Frances")
Kugisho P1Y3 "Ginga" Model 33
Torpedo Bombers:
Nakajima B6N Tenzan ("Jill")
Aichi B7A "Grace"
Aichi B7A2 Ryusei-Kai
Dive Bombers:
Aichi D4Y3 "Suisei"
Kugisho High Speed Long Range Carrier-Based Bomber
Seaplanes:
Kugisho E14Y Type Zero Model 11 Small Seaplane ("Glen")
Kawanishi E15K "Shiun" Model 11 Reconnaissance Seaplane ("Norm")
Aichi E16A1 "Zuiun" Model 11 Reconnaissance Seaplane ("Paul")
Kawanishi N1K1 ("George")
Aichi M6A "Seiran" Special Attack Seaplane
Flying Boats:
Kawanishi K-60 Heavy Flying Boat ("Mavis")
Kawanishi K-120 Heavy Flying Boat
Reconnaissance planes:
Mitsubishi Ki-46-III Type 100 Model 3 Reconnaissance Aircraft ("Dinah")
Mitsubishi Ki-95
Kobeseiko Te-Go Reconnaissance Aircraft
Rikugun Kogiken Plan IV Modify Reconnaissance Aircraft
Nakajima C6N1 "Saiun" Model 11 Reconnaissance Aircraft ("Myrt")
Nakajima C6N2 "Saiun-Kai" Reconnaissance Aircraft
Kugisho R1Y1 "Seiun" Long Range Reconnaissance Aircraft
Kugisho R2Y1 "Keiun" Reconnaissance Aircraft
Interceptors/Fighters:
Nakajima Ki-87
Kawasaki Ki-61 Type 3 Fighter "Hien" ("Tony")
Nakajima Ki-62
Kawasaki Ki-64 ("Rob")
Kawasaki Ki-88
Nakajima Ki-84 Type 4 Fighter "Hayate" ("Frank")
Kawasaki Ki-96
Kawasaki Ki-100-I Type 5 Fighter
Mitsubishi A6M Zero Fighter ("Zeke")
Mitsubishi A7M2 "Reppu" Model 11 ("Sam")
Kawanishi N1K1-J "Shiden" Model 11 ("Rex")
Kawanishi N1K2-J "Shiden" Model 21 "Shiden-kai" ("George")
"Shiden" Model 25 "Shiden-kai" Type 5
Mitsubishi A7M
Mitsubishi J2M "Raiden" ("Jack")
Mitsubishi J8M "Shusui" Rocket engine Interceptor
Kawanishi J3K1 Type 17 Experimental Interceptor
Mitsubishi J4M1 "Senden" Pusher Interceptor ("Luke")
Kawanishi J6K1 "Jinpu" Interceptor
Kyūshū J7W1 "Shinden" Piston engine Interceptor
Kyūshū J7W2 "Shinden-kai" Turbojet Plane Interceptor
Kyushu J7W3 "Shinden"
Kayaba "Katsuodori" Ramjet Plane Interceptor
Mizuno "Shinryū II" Type II Rocket Interceptor
Heavy Fighters/land strike planes:
Kawasaki Ki-45 Modify-D (Cho) "Toryu" ("Nick")
Mitsubishi Ki-83 Long Range Fighter
Kawasaki Ki-96
Rikugun Kogiken Plan I-A Heavy Fighter
Rikugun Kogiken Plan I-B1 Heavy Fighter
Tachikawa Ki-94 I
Tachikawa Ki-94 II
Mansyu Ki-98
Kawasaki Ki-102 Hei
Kawasaki Ki-108
Mitsubishi Ki-109
Rikugun Ki-93 Kokukosho
Kawasaki Ki-102a/b
Kawasaki Ki-102 Otsu ("Randy")
Mitsubishi Ki-46 III KAI
Jet planes:
Nakajima "Toka" Suicide Plane Attacker
Nakajima J9Y Kikka Turbojet Interceptor
Nakajima "kikka" Prototype Turbojet Special Attacker
Nakajima "kikka-kai" Prototype Turbojet Special Attacker
Nakajima "kikka" Turbojet Trainer
Nakajima Ki-201 "Karyuu" Turbojet Interceptor/Attacker
Mitsubishi J8M1 "Shusui" Rocket Interceptor
Mitsubishi J8M2 "Shusui" Model 21 Rocket Interceptor
Mitsubishi J8M3 "Shusui" Model 22 Rocket Interceptor
Mitsubishi Ki-200 "Shusui" Rocket Interceptor
Rikugun/Kokukosho/Mitsubishi Ki-202 "Shusui-kai" Rocket Interceptor
Kugisho/Yokosuka MXY-9 "Shuka" Rocket Interceptor operative train glider with turbojet
Kugisho/Yokosuka "Tenga" Twin Turbojet Medium Bomber
Kawanishi K-200 Experimental Heavy Turbojet Flying Boat]]
Kawanishi "Baika" Mk. I, II, III (Fieseler Fi-103 R derivation) Pulsejet
Suicide Attacker
Kugisho/Yokosuka MXY7 "Ohka" Model 11 Suicide Attacker plane
Kugisho/Yokosuka MXY7 "Ohka" Model 21 (Baka) Rocket Suicide Attacker
Kugisho/Yokosuka MXY7 "Ohka" Model 22 (Baka) Fanjet Suicide Attacker
Kugisho/Yokosuka MXY7 "Ohka" Model 33 (Baka) Turbojet Suicide Attacker
Kugisho/Yokosuka MXY7 "Ohka" Model 43 Ko (Baka) Turbojet Suicide Attacker
Kugisho/Yokoskua MXY7 "Ohka" Model 43 Otsu (Baka) Turbojet Suicide Attacker
Kugisho/Yokosuka "Ohka" Model 53 (Baka) Turbojet Suicide Attacker
Mizuno "Shinryū" Type I Suicide Attack Rocket Glider
Antisubmarine Aircraft:
Kyūshū Q1W1 "Tokai" ("Lorna") Anti-Submarine Aircraft
Mitsubishi Q2M1 "Taiyō" Anti-Submarine Aircraft
Kyūshū Q3W1 "Nankai" Anti-Submarine Aircraft
Radar-equipped Bomber devices for maritime reconnaissance:
Mitsubishi G3M3 (Model 23) ("Nell")
This bomber for long range capacity, in 1943, was used as a Maritime reconnaissance/Radar aircraft for long range missions and some electronic warfare work in the seas.
Mitsubishi G4M1 (Model 11/12) ("Betty")
From 1942, the G4M of this model was also used for the same purpose as the G3M bomber at maritime long range capacities.
Nakajima B5N2/B6N1-2:
In 1944, some torpedo bombers of mentioned types used with antisubmarine, radar detection (with finding radar equipment) and similar purposes in maritime short or medium range missions from carriers or land bases.
Medium Bomber, with Control Air-To-Air Missile Device:
Mitsubishi Ki-67 I KAI Go-IA:
This experimental modification were for managed Air-To-Air guided missiles evaluations, during 1944-1945.
Guided missiles:
Kawasaki Ki-147 I-Go Type1-Ko Air to Surface Radio Guidance Missile
Mitsubishi Ki-148 I-Go Type1-Otsu Air to Surface Radio Guidance Missile I-Go Type 1-Hei
"Ke-Go" IR Guidance Air to Surface Missile
Funryu Type 1 Surface to Air Radio Guidance Missile
Funryu Type 2 Surface to Air Radio Guidance Missile
Funryu Type 3 Surface to Air Radio Guidance Missile
Funryu Type 4 Surface to Air Radio Guidance Missile
Night Fighters:
Nakajima J1N1 "Gekko" ("Irving")
Nakajima J5N1 "Tenrai" Prototype #3
Aichi S1A1 "Denkoh"
Kawasaki Ki-45 KAIc "Toryu" ("Nick")
Kawasaki Ki-102c
Mitsubishi Ki-109a/b
Mitsubishi A6M5d-S Reisen
Nakajima Ki-58
Nakajima J1N1 C-KAI (S)
Nakajima J1N1-S Gekko
Nakajima J1N1-Sa Gekko
Nakajima C6N1-S Saiun
Yokosuka D4Y2-S Suisei
Yokosuka P1Y1-S Biakko
Yokosuka P1Y2-S Kyokko
Night Strikers:
Nakajima Ki-84 I Hayate ("Frank")
Nakajima B6N1/2 Tenzan ("Jill")
Helicopter/AutoGyro:
Special Experimental Helicopter "Re-Go"
Kayaba "Ka-Go"
Kayaba Ka-1
Gliders:
Maeda Ku-1-I Type 2 Small Airborne Glider
Mizuno "Jinryu" Glider
Kayaba Ku-2 Tailless Glider
Kayaba Ku-3 Tailless Glider
Kayaba Ku-4 Tailless Motor Glider
Kayaba Ku-4 Modify Tailless Rocket Glider
Maeda Ku-6 Flying Tank
Kokusai Ku-7 Airborne Glider (Buzzard)
Kokusai Ku-8-II Airborne Glider (Goose)
Trainers:
Mitsubishi A6M2-K/A6M5-K trainers
Yokoi Ku-13 "Akigusa" Rocket Interceptor practice grid (Experimental "Shusui" Light Glider)
Kugisho/Yokoi Ki-13 Experimental "Shusui" Heavy Glider
Kuugisho/Yokosuka "Ohka" K-1 Suicide Attack Trainer
Kuugisho/Yokosuka "Ohka" K-2 Suicide Attack Trainer (or "Ohka" K-1 Modify "Wakazakura")
Kyūshū K11W "Shiragiku" Flight Work Trainer
Kyūshū Q1W1-K Tokai-Ren Trainer version of Q1W1
Aichi M6A1-K "Seiran Kai" (or "Nanzan") Special Attack Seaplane Trainer
Aichi H9A1-K
Mansyu Ki-79a
Kugisho/Yokosuka MXY-8 "Akigusa" Rocket Interceptor practice glider (Experimental "Shusui" Light Glider)
Kugisho/Yokosuka MXY-9 Experimental "Shusui" Heavy Glider
Experimental Aircraft:
Kawasaki Ki-78 "Ken-3" High Speed Experimental Aircraft
Kugisho/Yokosuka MXY-1 Aerodynamic Testing Aircraft
Kugisho/Yokosuka MXY-3
Kugisho/Yokosuka MXY-4
Kugisho/Yokosuka MXY-5 Airborne Glider
Kugisho/Yokosuka MXY-6 Aerodynamic Testing Motor Glider
Carrier Planes:
Mitsubishi Ki-97
Kokusai Ki-105
Advanced armament and engines
Some advanced Rocket and Turbojet Engines:
Type 4 1-Go Model 20 Rocket (260 kg)
Type 4 1-Go Model20 Rocket (800 kg)
Kugisho Hatsukaze 11 (Tsu-11) Fan Jet Engine (180 kg)
Kugisho Hatsukaze 11 (Tsu-11) fan jet Engine (200 kg)
Ishikawajima Ne-20 Turbojet (475 kg) - developed from plans of the German BMW 003
Ishikawajima-Harima Ne-30 Turbojet Engine (850 kg)
Ishikawajima-Harima Ne 20-Kai Turbojet (618 kg)
Ishikawajima-Harima Ne-130 Turbojet (908 kg)
Nakajima Ne-230 Turbojet (885 kg)
Mitsubishi Ne-330 Turbojet (1,320 kg)
Mitsubishi Tokuro-1 Type 2 Rocket (150 kg)
Mitsubishi Tokuro-1 Type3 Rocket (240 kg)
Mitsubishi KR10 (Tokuro-2) Rocket (1,500 kg)
Mitsubishi Tokuro-3 Rocket (2,000 kg)
Maru Ka-10 Pulsejet (300 kg)
New Armaments in aircraft (for Rocket and Jet planes):
30 mm Type 5 Machine Gun
13 mm or 20 mm Machine Gun
30 mm Ho155-II Machine Gun
20 mm Ho5 Machine Gun
20 mm Type99 Machine Gun
Air-to-Air 30 kg or 60 kg no guided rockets
Air-To-Air 30 kg bombs (against enemy bomber formations)
Advanced tanks and armour equipment and captured armors
Armoured fighting vehicles under development before the end of the war.
Type 98 Ke-Ni Light Tank
Type 1 Medium Tank Chi-He
Type 2 Light Tank Ke-To
Type 3 Amphibious Tank Ka-Chi
Type 3 Medium Tank Chi-Nu
Type 4 Medium Tank Chi-To
Type 4 Light Tank Ke-Nu
Type 5 Medium Tank Chi-Ri
Type 1 75 mm Self-propelled howitzer Ho-Ni I
Type 1 105 mm Self-propelled howitzer Ho-Ni II
Type 2 Gun Tank Ho-I
Type 3 Gun Tank Ho-Ni III
Type 4 15cm self-propelled gun Ho-Ro - used in the Philippines and Okinawa
Short Barrel 120 mm Gun Tank
75 mm Self-propelled Anti-tank Gun Na-To
Type 1 Half-Track "Ho-Ha"
Type 4 30 cm SP Heavy Mortar Carrier Ha-To
105 mm SP Gun Tank "Ho-Ri"
Type 5 47 mm SP Gun "Ho-Ru"
Super-Heavy Tank "O-I"
Type 1 Ti-Ho Medium Tank
Type 2 Medium Tank
Type 2 No-Ni Tank Destroyer
Type 2 Hoi Infantry Support Tank
Type 3 Ke-Ri Light Tank
Type 4 120 mm Ho-To SPG
Type 5 Mortar Launcher "Tok"
75 mm SPG "Kusae"
Experimental Long Barrel 120 mm SPG
Experimental Medium Tank Chi-Ni
Experimental Medium Tank Chi-Ho
Experimental Ultra Heavy Tank
Experimental Jiro-Sha Self Propelled Gun
Experimental Type 2 Ho-Ri Tank Destroyer
Experimental Type 2 105 mm Ka-To Tank Destroyer
Experimental Type 2 75 mm Ku-Se SPG
Experimental Light Armored ATG Carrier So-To
Experimental Type 5 47 mm Ho-Ru SPATG
Maeda Ku-6 Flying Tank
Experimental Flying Tank Ku-Ro
Experimental 75 mm Tank Destroyer Na-To
Experimental Light Tank Ke-Ho
Experimental 105 mm Tank Destroyer
Experimental Type 5 155 mm Ho-Chi SPG
Experimental Type 98 SPAAG project
Experimental Tank - Number 1
Experimental Type 91 Heavy Tank
Type 98 AA Halftrack "Ko-Hi"
Type 98 APC "Soda"
Type 1 Armored Personnel Carrier Ho-Ki
Type 95 Heavy Tank
Type 97 Chi-Ni
Type 97 Shi-Ki Command Tank
Type 1 Chi-He Medium Tank
Type 1 Artillery Observation Vehicle
Type 4 Ke-Hy Light Tank
Type 4 155 mm Ho-Ro SPG
Special vehicles:
Armored Engineer Vehicle "SS"
Armored Lumberjack "Ho-K"
Type 95 Crane Vehicle "Ri-Ki"
Armored Recovery Vehicle "Se-Ri"
Swamp Vehicle "FB"
Command Tank "Shi-Ki"
Type 100 Observation Vehicle "Te-Re"
Type 97 Mini Engineer Vehicle "Yi-Go"
High-Voltage Dynamo Vehicle "Ka-Ha"
Type 97 Pole Planter and Type 97 Cable Lay
Type 91 Armored Railroad Car "So-Mo"
Type 95 Armored Railroad Car "So-Ki"
Chemical/Biological Warfare vehicle:
Type 94 Disinfecting Vehicle and Type 94 Gas Scattering Vehicle
Remote control special vehicle "I-Go"
"
I-Go" are the remote control unmanned miniature special vehicles (like the German "Goliath"). This weapon breaks open a passage in an obstacle. And this is controlled, or is destroyed a pillbox, and it does other charge work.
I-Go carries an explosive, a smoke pot, and other working tools. Remote control was possible in distances of 1000 m and more.
Unmanned Miniature Special Vehicle "Ya-I"
Name : Small Work Vehicle Ko
Length : 1000 mm
Width : 700 mm
Height : 500 mm
Engine : Electric Motor (2 hp) X 2
Max Speed : 18 km/h
Range : 0.8 km
Armament : 35 kg explosive charge
Remote control special working cable car with 90 mm Mortar cannon "Ite-Go"
Remote control boat "Isu-Go"
This weapon destroys an obstacle on the water and develops a smoke screen by remote control at the time of the crossing big river operations.
Rocket cannon "Ro-Go"
The cannon ball propelled by gunpowder rocket or a liquid fuel rocket.
Engine stop gas device "Ha-Go"
This project was canceled.
Radio Jammer "Ho-Go"
Electric cannon "To-Go"
A research project to develop a gun to give a shell high initial velocity and long range through electromagnetic power. Project was canceled.
Ultrashort waves application research "Chi-Go"
High Voltage Weapon "Ka-Go"
High voltage obstacle destruction device "Kaha-Go"
High voltage wire obstacles "Kake-Go"
High voltage net launching rocket "Kate-Go"
This is a rocket weapon which is connected to a length of piano wire. After launching, it expands over the enemy's head, and applies a high voltage to the piano wire. The voltage was from 2,500-5,000 V. But the launching distance is short. The development of the net was also difficult. The project was canceled.
Infrared rays detection device "Ne-Go"
This is the research of detecting the infrared rays which are generated from the engine. Aircraft were sensed by 7000 m, and they could be complemented by 3000 m. The project was canceled by the development of radar.
The mine detection sonar for the landing operations "Ra-Go"
Radio control device "Mu-Go"
The radio control boat equipped with sonar and a depth bomb were carried on "Musu-Go"
A plan to make artificial thunderclouds gather called "U-Go"
U-go planned to use a powdered dust explosion to create thunderclouds. The project was canceled.
Noctovision equipment "No-Go"
Death ray "Ku-Go"
Ku-go aimed to employ microwaves created in a large magnetron.
Infrared rays Homing Bomb "Ke-Go"
Balloon bomb "Fu-Go"
Balloon Diameter : about 10 m
Bomb loaded : 150 kg Bomb X 1,
Incendiary bomb X 2
The Japanese army built balloon bombs to attack the American mainland. A little more than 9,000 of these balloons were launched. It is estimated about 1,000 made it to the U.S. Only six confirmed deaths are attributed to one these bombs: a woman and five children near Lakeview, Oregon, were killed when the bomb exploded as they attempted to move it.
Optical communication device "Ko-Go"
Rope launching rocket "Te-Go"
Blind ray "Ki-Go"
Electronic propaganda device "Se-Go"
Sonar device "Su-Go"
Experimental Armour for Mobile MG-gunner
Length : 1330 mm
Width : 890 mm
Height : 640 mm
Weight : 153 kg (Heavy Type), 122 kg (Light Type)
Crew : 1
Armament : Type 96 Light Machine Gun X 1
Nuclear projects "Mishina" & "F-Go"
The Suicide Attack Frogman "Fukuryuu"
Sen-Toku Giant Undersea carrier Submarine I-400 Class
Sen Ho Type Submarine I-351 Class
Sen Taka Type Submarine I-201 Class
Type A2 Type Submarine I-12 Class
Type A1 Submarine I-9 Class
Type AM Submarine I-13 Class
Type B1 Submarine I-15 Class
Type B2 Submarine I-40 Class
Type B3 Submarine I-54 Class
Type D2 Submarine I-373 Class
Type D1 Submarine I-361 Class
Type KRS Submarine I-21 Class
Type C2 Submarine I-46 Class
Giant Superbattleship project of the new "Yamato" Class.
Plans for developed short and long range Missiles:
Is over some projects why developed to missile level certain prototypes of Fieseler Fi-103 and suppose any example of V-2, for convert at this in guided missile with nuclear, chemical or biological warhead. Are one alternative weapon for envoyed nuclear artifact against the United States, but these projects did not advance past the theory or planning stages before the finish of the war.
Japanese Army Electronic Warfare System
Ground-Based Radar
Ta-Chi 1 Ground-Based Target Tracking Radar Model 1
Ta-Chi 2 Ground-Based Target Tracking Radar Model 2
Ta-Chi 3 Ground-Based Target Tracking Radar Model 3
Ta-Chi' 4 Ground-Based Target Tracking Radar Model 4
Type A Bi-static Doppler Interface Detector (High Frequency Warning Device "Ko")
Ta-Chi' 6 Type B Fixed Early Warning Device (Fixed Early Warning Device "Otsu")
Ta-Chi 7 Type B Mobile Early Warning Device (Mobile Early Warning Device "Otsu")
Ta-Chi 13 Aircraft Guidance System
Ta-Chi 18 Type B Potable Early Warning Device (Portable Early Warning Device "Otsu")
Ta-Chi 20 Fixed Early Warning Device Receiver (for Ta-Chi 6)
Ta-Chi 24 Mobil Anti-Aircraft Radar (Japanese Würzburg)
Ta-Chi 28 Aircraft Guidance Device
Ta-Chi 31 Ground-Based Target Tracking Radar Model 4 Modify-Airborne Radar
Ta-Ki 1 Model 1 Airborne Surveillance Radar
Ta-Ki 1 Model 2 Airborne Surveillance Radar
Ta-Ki 1 Model 3 Airborne Surveillance Radar
Ta-Ki 11 ECM Device
Ta-Ki 15 Aircraft Guidance Device Receiver (for Ta-Chi 13)
Shipborne Radar
Ta-Se 1 Anti-Surface Radar
Ta-Se 2 Anti-Surface Radar
Imperial Japanese Navy Electronic Warfare System
Land-Based Radar
Type 2 Mark 1 Model 1 Early Warning Radar ("11-Go" Early Warning Radar)
Type 2 Mark 1 Model 1 Modify 1 Early Warning Radar ("11-Go" Model 1 Early Warning Radar)
Type 2 Mark 1 Model 1 Modify 2 Early Warning Radar ("11-Go" Model 2 Early Warning Radar)
Type 2 Mark 1 Model 1 Modify 3 Early Warning Radar ("11-Go" Model 3 Early Warning Radar)
Type 2 Mark 1 Model 2 Mobil Early Warning Radar ("12-Go" Mobil Early Warning Radar)
Type 2 Mark 1 Model 2 Modify 2 Mobil Early Warning Radar ("12-Go" Modify 2 Mobil Early Warning Radar)
Type 2 Mark 1 Model 2 Modify 3 Mobil Early Warning Radar ("12-Go" Modify 3 Mobil Early Warning Radar)
Type 3 Mark 1 Model 1 Early Warning Radar ("11-Go" Modify Early Warning Radar)
Type 3 Mark 1 Model 3 Small Size Early Warning Radar ("13-Go" Small Size Early Warning Radar)
Type 3 Mark 1 Model 4 Long-Range Air Search Radar ("14-Go" Long-Range Air Search Radar)
Type 2 Mark 4 Model 1 Anti-aircraft Fire-Control Radar (Japanese SCR-268) (S3 Anti-aircraft Fire-Control Radar)
Type 2 Mark 4 Model 2 Anti-aircraft Fire-Control Radar (Japanese SCR-268) (S24 Anti-aircraft Fire-Control Radar)
Airborne Radar
Type 3 Air Mark 6 Model 4 Airborne Ship-Search Radar (H6 Airborne Ship-Search Radar) (N6 Airborne Ship-Search Radar)
Type 5 Model 1 Radio Location Night Vision Device
Shipborne Radar
Type 2 Mark 2 Model 1 Air Search Radar ("21-Go" Air Search Radar)
Type 2 Mark 2 Model 2 Modify 3 Anti-Surface, Fire-assisting Radar for Submarine ("21-Go" Modify 3 Anti-Surface, Fire-assisting Radar)
Type 2 Mark 2 Model 2 Modify 4 Anti-Surface, Fire-assisting Radar for Ship ("21-Go" Modify 4 Anti-Surface, Fire-assisting Radar)
Type 2 Mark 3 Model 1 Anti-Surface Fire-Control Radar ("31-Go" Anti-Surface Fire-Control Radar)
Type 2 Mark 3 Model 2 Anti-Surface Fire-Control Radar ("32-Go" Anti-Surface Fire-Control Radar)
Type 2 Mark 3 Model 3 Anti-Surface Fire-Control Radar ("33-Go" Anti-Surface Fire-Control Radar)
