General Japanese Naval Forces Discussion HQ

The turrets are the upgraded versions exclusive to the Nagato class rebuilds. You can easily identify them by the extra armor plate and larger rangefinders on the super firing turrets.

The catapult and floatplane did not exist when Amagi was designed, and the ship was cancelled before they could have been modified to carry them.

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Its hard to tell, but this is… was turret #1 from Akagi, modified slightly to serve as the Kurosaki Battery at Ikishima. Two other turrets were taken from Tosa and moved to Busan and Tsushima.
image
Can anyone see if they can find better pictures than this? They should be good examples of how the turrets would’ve looked without the added armor if nothing else.

I guess I can at least understand why Gaijin did it. Finding proper references for the actual design of the turrets has been more challenging than I thought. Most people tend to just re-use the original 41cm turret design from Nagato, although they had been redesigned for Kaga, Amagi, and Kii.

Though the floatplane is just nonsense. Almost as if they wanted to save Nagato for a better occasion? Anniversary of New Power? Likely waiting until Nelson and Colorado are ready if anything.

Someone from Discord sent this, showing the errors:

Please use the translate function of your browser to view.

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Wait, are we seriously, finally getting the aiming system for naval rockets and mortars?!

Because I posted that very suggestion back in November 2023 :D

Very good website, thank you

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Very nice. I don’t own anything detailed enough on the cancelled ships of the 8-8 fleet to have caught the smaller details. Its nice someone else has.

I’ll share some of the materials I’ve found.

45-caliber 40 cm Turret-mounted Cannon
45cal40cmcannona
Busan Fortress Jangjadeng Battery (Battleship Tosa No. 2 turret)

This 410 mm coastal gun is a turret from the Japanese Navy battleships Tosa, Kaga, and Akagi, which were canceled due to the Washington Naval Treaty. The Japanese Army repurposed these turrets as coastal defense guns for strait defense.

Specifications

Spoiler

Caliber: 410 mm
Barrel length: 18,840 mm
Weight: 674 t
Rate of fire: 0.5 to 1.7 rpm per barrel
Elevation: -2° to +35°
Traverse: ±150°
Muzzle velocity: 760 m/s
Maximum range: 30,300 m

Armor

  • Face: 305 mm
  • Side front: 230 mm
  • Side rear: 190 mm
  • Rear: 190 mm
  • Top front: 152 mm
  • Top rear: 127 mm

Ammo

  • 40 cm Capped Armor-Piercing Shell
  • APHECBC - Armour-Piercing, High-Explosive, Capped, Ballistic Capped Shell
  • Caliber: 410 mm
  • Projectile weight: 1,000 kg
  • Explosive: Picric acid
  • Explosive weight: 27.97 kg
  • Armor penetration: Penetrates 410 mm FHA at an impact velocity of 370 m/s and an angle of 15°

Illustration from a fortress artillery training manual

Spoiler


Cross-sectional view of a fortress battery

Spoiler

Iki Fortress Kurosaki Battery (Battlecruiser Akagi No. 1 Turret)


Source

Spoiler

Jiro Sayama, “Japanese Army Artillery: Fortress Artillery” (2011). ISBN-13: 978-47698271461. p. 466 (photo)
Asami Johouji, “History of Japanese Fortifications: Modern Coastal Fortifications and Fortresses” (1971), p. 259
Army Ministry Education General Directorate Chief, “Directive on the Education of Turret Cannons in Heavy Artillery Units” (1936)
Army Technical Bureau “Establishment of Standards for the 45-Caliber 40 cm Cannon Turret, Armor-Piercing Capped Shells, and Five Other Items” (1930)

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Heads up for any DMM players , after more than a year in-game (since August 9, 2023), the window for purchasing the battle trophy for naval katakana decals only has 53 days left . Each decal still costs 200GE.

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Wish we had this stuff for the International servers. I’m quite jealous of the DMM servers cause they get all the fun stuff. Except for the funny accident where many including myself were lucky to get the A6M5 Ko DMM Camouflage, i still love it.

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That’s very interesting! I’ve read the gun was used at the Busan battery, but haven’t been able to find any pictures of documents regarding it. I assume that much of the structure remains, even if the turret was scrapped?

I found a website somewhat related
Tateyama Discovery: 68 Years After the War Special Feature on the Day of the End of the War Battle Remains of Tateyama City 18 “Suzaki No. 1 Battery” (Part 1) (tateyamals.blogspot.com)

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The voices of the Japanese crew members have changed in this update. Here is the video.

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Navy only?

DMM plans to eventually include ground as well. No news for air as of yet.

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Hmm, it seems we got a response from Gaijin about the various inaccuracies Amagi has in the game. From what the developers are saying, they based the model on the 1919 drawings of the ship. The explanation still doesn’t account for the anachronistic catapult and incorrect turrets. Also, as a note, the 1919 drawings are part of the Amagi preliminaries, so in essence, this update gave us the very first completely paper ship design that’s ever actually been implemented in the game

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Welp. Cats out of the bag now.
Time to start A-150 when posting.

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Where is this response?

Aye, or heck, No.13 when A-140 Prelims when, etc.

As a note, I’m not counting Krons as a purely paper ship, as Project 69 was at least laid down with the intention of being armed with 305mm guns and does represent the finalized design of the ship wait said weaponry.

Over on the Gaijin issue tracker,

Неправильно замоделен арт-директор IJN Amagi // Gaijin.net // Issues

Линейный крейсер IJN Amagi, не верно замоделен мостик // Gaijin.net // Issues

The exact response as translated is:
“In the game, the ship is made according to the drawing of 1919. It is not a mistake.”

Also pardon the double post, your response didn’t pop up until I hit send

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It was built at ~10%. Many vehicles with a higher degree of readiness were refused entry due to “incompleteness”, for example, the Ki-91 - the developer declared that 60% readiness “is too little”. However, a low degree of readiness is only half the trouble. Much bigger questions are raised by the technical impossibility of completing the construction of the ship according to the project. The main caliber turrets only had sketches, and the design of the secondary battery and air defense turrets had not even begun. The turrets and guns could not be manufactured according to the project within the changed deadlines, so German turrets were ordered to replace them. However, even they could not be virtualy installed, because the Soviet side never received information about their weight and dimensions to redesign the ship. The ship’s engine also could not be completed - to achieve the required power, the boilers had to withstand fantastic pressure and temperature, for the first time in world practice, boilers of such parameters were created only in the 70s (by the Americans). Moreover, the factory where the power plant was to be built was never built - its construction was frozen due to a complete lack of equipment. The ship’s FCS was, albeit modernized, the FCS of a WWI-era ship. Adequate aimed fire could be conducted at a distance of up to 15 km, if we take the theoretical limit, it was 25 kilometers. Cemented armor with a thickness of over 230 mm could not be produced. This list can be continued for a long time, but the essence is one - the ship was an unrealistic fantasy. None of these restrictions are reflected in the game.

The ship was constantly cut in characteristics during construction so that it could be produced - they agreed to abandon the cementation of armor plates, agreed to low-strength rivets, agreed to the impossibility of implementing artillery weapons in the given time frame and tried to import foreign, etc., etc. However, in the game, the ship is realized precisely in a fantastic, physically unrealistic version. Despite the seemingly laid down hull, it is as realistic as the H-44 and even less realistic than, for example, the A-150.

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Am I the only one feeling that Type 3 APC and Type 5 APC working properly?

It seems like those APC shells only works constantly against broadside IJN Fuso andUSS Alaska, which has its shell room and magazine directly after the hull. Last day I just failed to detonate bow-in USS Des Moines, which was usually the easiest thing to detonate on battleships. Shell room and Magazine did hit, but only gets red, not black.

I don’t know what’s the main problem. It seems those APCs does penetrate armor, but sharpnel does not act properly, or fuze is too short that it is work like HE. Literally now it is better for IJN Mutsu to be used as high explosive main battleship with 140 mm, not an AP battleship what it should be.

Gaijin still have at least two(Tosa, Nagato) and can be some more if multiple non-comissioned ships are allowed. It will be the pinnacle of IJN’s supremacy over another navies in-game, but it is ruined by terrible APC.

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