empire of japan

  1. M

    German and Italian planes in Japanese Service

    Hi Guys I came across information on the internet that the Japanese used: Messerschmitt Bf.109G Dornier Do. 215 Focke-Wulf Ta.154 Savoia-Marchetti SM.79 Reggiane Re.2000 Japanese homegrown Mistel project similar to the Germans (N1K fighter on a modified J5M bomb) Could this be a case of...
  2. JFC Fuller

    Vickers Design 742 Battleship

    A detailed description of the Torpedo Protection System for this ship is held by the University of Tokyo and has been digitised. I have downloaded, and uploaded here, the description and the diagram of this system. It goes without saying that the presence of this document in Japan is a very...
  3. Ekrub

    Japanese Heavy Bombs WW2

    Are there any Japanese WW2 projects for bombs in the 2000+ kilogram range? The British, Americans, Germans, and Soviets all had various large conventional bombs in the 2000 - 20000 kilogram range, but I have not come across anything (in my limited research) of a similar weight class for Japan...
  4. D

    IJN Mogami 10" Gun Alternative and Maru-3 10" Gun Super-A Cruiser Project

    Something about Super-A Cruisers before Maru-5 Project. Source: 早川幸夫,スーパー・クルーザー「超甲巡」覇王伝説,月刊《丸》,2013年5月号 (Monthly "Maru", May 2013). The author stated that in a 1934 document named "Required National Defense Force from Treaty-Break to 1940" (条約決裂後ノ昭和十五年度ニオケル国防所要兵力表), that IJN's original plan...
  5. World B4

    IJA heavy mortars

    http://www3.plala.or.jp/takihome/14-27.html I can't find other sources referencing this, if it's not real what's the picture of? https://ja.wikipedia.org/wiki/%E4%B9%9D%E5%85%AD%E5%BC%8F%E9%87%8D%E8%BF%AB%E6%92%83%E7%A0%B2
  6. World B4

    Maru-Se rocket powered submarine

    I first saw this on navypedia, and I had a hard time finding more. I thought it might have been fake. https://www.navypedia.org/ships/japan/jap_aux_maru_se.htm I found these images http://www.ww2technik.de/Bilderchen/japmarine/armeeschiffe/jap%20maru-se%20type%20army%20sub%202.jpg...
  7. World B4

    Fu-Go Submarines

    https://en.wikipedia.org/wiki/Fu-Go_balloon_bomb https://en.wikipedia.org/wiki/Japanese_submarine_I-34 https://en.wikipedia.org/wiki/Japanese_submarine_I-35 After months of research, Kusaba's team developed a six-metre (20 ft) prototype balloon capable of flying at 25,000 feet (7,600 m) for 30...
  8. World B4

    I-351 Original Design

    yeah I bet you can't guess The I-351 and her sister sub the I-352 were laid down as flying boat tender submarines, but converted during construction to tanker subs. Original specifications, design docs and illustrations itt
  9. World B4

    Ha-101 class original design

    The Ha-101 class submarines were laid down as transport submarines, but during construction were converted into tanker submarines, small submarine motherships/tenders, and radar picket subs. Any specifications or illustrations of the intended original design would be bussin...
  10. World B4

    Ohama class original design

    The Ohama and her sister ship Okashi were laid down as target ships, successors to the Hakachi. Ohama was completed as an escort vessel, and Ohashi collided with Yamashio Maru and sunk before completion, but would have been given the same treatment. I can't find any illustrations of their...
  11. World B4

    Satsuma class original design

    The Satsuma class as laid down was intended to mount 12 12 inch guns, with 4 on the centerline and 5 on either side, in a total of 4 twin and 4 single gun turrets. Due to budget issues that the link goes into, the ships got redesigned as semi-dreadnoughts. I can't find any illustrations of the...
  12. World B4

    Chi-Se medium tank

    https://ja.wikipedia.org/wiki/%E8%A9%A6%E8%A3%BD%E4%B8%AD%E6%88%A6%E8%BB%8A_%E3%83%81%E3%82%BB Given that there is one magazine listed as a source, and I don't have it to look into further, posting this here.
  13. World B4

    WW2 Japanese self propelled 20cm gun

    https://ja.wikipedia.org/wiki/%E7%9F%AD%E4%BA%8C%E5%8D%81%E7%B3%8E%E7%A0%B2#cite_note-1 https://en.wikipedia.org/wiki/Type_97_ShinHoTo_Chi-Ha_medium_tank#Short_Barrel_120_mm_gun_tank https://ja.wikipedia.org/wiki/%E7%9F%AD%E5%8D%81%E4%BA%8C%E7%B3%8E%E8%87%AA%E8%B5%B0%E7%A0%B2 This thing's big...
  14. Grey Havoc

    Shoichi Yokoi memorial museum closes

    https://mainichi.jp/english/articles/20220905/p2a/00m/0na/020000c?dicbo=v2-c68a3d101177a19f336252dfd46fdc77
  15. Hood

    Submarine Volta 1905

    This is not an unbuilt project, but it is an enigmatic mystery that perhaps members here might be able to add more to. The Volta was a 19-ton electric-powered submarine armed with two 12in torpedo tubes, built by Rennie Forrestt Shipbuilding, Engineering & Drydock Co. Ltd at Wivenhoe, Essex...
  16. klem

    Japanese Mortar 70 mm Parachute Bombs Barrage.

    " The Japanese 70-mm barrage mortar was first encountered on Attu. It consists of a smooth-bore tube, 4 feet long, the steel base plate of which is fastened by two bolts to a wooden block, 10 x 12 x 8 inches. A large iron spike on the under side of the wooden block is thrust into the ground to...
  17. T

    Post Battle of Britain: Luftwaffe/Axis options

    Similar to the post-BoB RAF: what might've Luftwafe/RLM do after Autumn of 1940 in order to improve their standing, both in short-term (next 12 months) and long-term (a few next years). I've also included 'Axis' term here - mostly European Axis countries' air forces/services - since they can be...
  18. monochromelody

    Some thought about "Japanese Heavy Tanks"

    You may read some info from Maiwaffentrager's blog or somewhere else, which I seriously doubt any credibility. I would assume that these names show some certain design features, rather than factory names, I'll explain now. What Maiwftrgr. said Ai-96, Mitsu-97, Mitsu-104, Ishi-108, have names to...
  19. Tzoli

    Japanese Radar Type Designation Systems

    I've tried to collect the WW2 Japanese radar Type designation systems with data and if possible photos and drawings. Gathered from these sources: http://www.combinedfleet.com/radar.htm http://pwencycl.kgbudge.com/R/a/Radar.htm http://home.e01.itscom.net/ikasas/index.htm...
  20. Tzoli

    Foreign Warship Export Designs for Japan

    While Japan constantly grew in power since the Meiji restoration and being an island nation it's navy too had to have a prominent role in it's military forces The first warships of Japan were built in ofreign Yards mostly in British but there were quite a few French and a some from US yards as...
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