Hello everyone, this will be a very short and brief addendum that’s pertinent to my suggestion "
8cm Navy Anti-Tank Rocket Launcher ", in collaboration with @_DELAVR we’ve been able find out new information on the Navy Anti-Tank Rocket Launcher.
I’ll lay out a brief sectioned list of new details and photos for your viewing and to assist the development team with further information and references, as the old suggestion was closed recently.
This won’t nearly be as long as a typical suggestion or quite so hyper-formatted, consider this as primarily a supplement.
New Photos
Information about New Rocket Types, AT and Anti-Infantry HE
A document was found in the JACAR archive and presented in the Digital Archive under “[陸戦参考－第１号・陸戦兵器要目表] Page. 72. (https://www.digital.archives.go.jp/file/1724884)” (Reference for Ground Warfare - No. 1: Specifications of Ground Warfare Weapons) Of which gave information about a 100mm/10cm ammo type that was being tested using the “Navy Rocket launcher”.
I’ll will now show these pages and provide and transcription and translation to the best of my ability.
Translation:
Anti-Tank Rocket Launcher
Tactical Application:
Anti-tank close-range assault
Specifications:
Total Weight: 14.360 kg
Projectile Weight: 1.500 kg
Maximum Range: Approx. 150 m
Maximum Velocity: Approx. 130 m/s
Dispersion Radius: Approx. 1 m dispersion at 100 m range
Characteristics:
This system consists of a portable rocket-propelled hollow-charge (HEAT) shell and its launch apparatus. Firing can be executed using either standard mortars (8 cm, 10 cm) or a trial launcher apparatus. The penetration power of this rocket-propelled hollow-charge shell against thick steel plate
Additionally upon revisiting the “Table I, SALIENT FEATURES OF JAPANESE NAVAL ROCKETS” as used in the original suggestion, with this information we can retrospectively assess the chart and discover the 10cm rocket aforementioned, in addition to the other characteristics concerning an additional rocket type that can be launched by the Navy Rocket Launcher that was intended for anti infantry use.
For clarification I’ve highlighted the rocket types and their according sections.
Red = Anti Tank (S.C.R) Shaped Charge Rocket
Blue = Anti Infantry (H.E.R) High Explosive Rocket
Additionally here’s a very helpful graph to display how rockets of two different calibres can be used in the same rocket launcher; due to the six sided trough design, it allows stable points of contact for the rockets to rest inside the tube
Explosive Charge/filler composition
Going back through some of the reports conducted by the U.S post war and consulting"TM 9-1985-4 JAPANESE EXPLOSIVE ORDNANCE (BOMBS, BOMB FUZES LAND MINES, GRENADES FIRING DEVICES AND SABOTAGE DEVICES 1)"
I have identified the contents of explosive filler in both rockets cross-referencing between this data and the aforementioned “Table I, SALIENT FEATURES OF JAPANESE NAVAL ROCKETS”
What Does This Mean for The Original Suggestion?
With this new information we can now offer a larger calibre of rocket for the Navy Rocket Launcher going from 8cm-10cm, thereby increasing penetration from ~70 - ~100mm of penetration against RHA when using the Shaped Charge Rocket.
Additionally in the initial suggestion I made a point to mention how the amount of filler would essentially make these rockets mirror some 75mm HE shells in their amounts of HE filler. Though now in retrospect with the information provided and knowing that HE shells on their own were tested in both 8cm - 10cm rocket calibres, we can make the seperate suggestion for Japan to receive this rocket launcher with those rockets.
Functionally it could perform like the Arisaka Mortar, but instead of mortar shells it would instead be much more stable and higher velocity rockets.
Using these on an AT soldier would take away some of the anti tank capabilities minus some thin skinned vehicles, but they’d be able to quite effectively engage infantry with this launcher and befitting HE rockets.
Closing notes
First and foremost I’d like to again thank @_DELAVR for their assistance in finding new higher quality photographs, and for providing a diagram of how the rockets would sit inside the launcher, as well as their assistance with our collaboration.
I’d also like to thank our very lovely helper @Euthymia07-live for looking at the old suggestion and noting it down for the developers.
I hope this quick supplementary material will help the original suggestion and dev team.
Additionally to gauge how we feel about the HE rockets and the increase of calibre from 8cm to 10cm I will attach polls in the final section.
Thank you for your attention 
- Yes
- No (if no why not?)
- Yes, one version with AT rockets and another with HE rockets
- No, they should not be included and only AT rockets should be
- BR 2
- BR 3 (same as Arisaka Mortar)
- BR 4
- BR 5
HE Rockets*
- Event weapon reward
- Event squad reward
- Battlepass reward
- Premium Squad
Launcher with HE rockets*
