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IJN_Harugumo

A detailed analysis of the problem with Izumo's model in-game, and possible solutions

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(The following is a copy of my post from Reddit, slightly formatted for the forums)


Long post ahead, you have been warned.


First, we need to understand the difference between a paper ship and a paper ship.


Some ships in the game are purely fantasy ships, i.e: their design is completely fabricated by Wargaming. Such examples are the Roon, Hindenburg, the Henri IV and the Zao. Alright, maybe Zao have a bit of historical background, as the IJN had actually planned to lay down a new generation of heavy cruisers, however, no such plans for the class survived the war and the current Zao in-game closely follows that of a fan-design on a Japanese Warship Magazine.

Then there are the ones that have historical designs but some parts have been altered by Wargaming. Examples in-game included the Hakuryu-she have the dimensions of the G-14 Project but have G-15 (kai-Taihou) project features, the Großer Kurfürst (the H-class designs all had 4 twin mounted turrets in a A-B X-Y layout not the triple turret it had in-game, and the upgraded Friedrich der Große with 420mm guns (H-39 class were not to have 420mm guns).

Then there are designs which haven’t been altered (except for things like AA armament, torpedo belt and whatnot-these things are for balancing the ship into a specific tier) but are in various stages of design, some near finished, some not, some are purely design studies. Examples are the Izumo, the Nicolas, the Phoenix, and some French/Russian/British cruisers and destroyers.

And then there are the designs that existed, finalised and are either ready to be built/laid down but cancelled for whatever reason. Examples in game are the Ibuki, Montana, Amagi, De Grasse, the Friedrich der Große with stock guns, some Russian/British cruisers/destroyers.

One thing that differs finalised designs and designs in various stages of development is that, with finalised designs, you have accurate drawing of the said ship, many times you have wooden mock up models, and everything is finalised-including how the external appearance will look like when constructed.

But with designs in various stages of development, the actual external appearance of the said ship are not ever finalized. There are rough indication of the positions of guns and funnels and superstructures and other stuff but they are not to be treated as if this is how they are going to look like if built.


Wargaming have done a fantastic job on modelling paper ships. The Roon and the Hindenburg, though completely fictional, resembles many signature details of Admiral Hipper (the Bridge/conning tower shape, the seaplane facility aft of the funnel, the location of the fore and aft range finders, the Friedrich der Große and Großer Kurfürst have similar shapes of the Bismarck as well.

The high tier french cruisers shares the look of the Dunkerque and the Richelieu, with the hexagonal bridge and the spikes (I don’t know what to call them) and the funnel that is swept backwards and in some ships integrated with the aft superstructure much like the Richelieu class.

The Russian cruisers of Moskva and Donski all had their fair share of the Russian cruisers’ oddly high bridge and large superstructure profile.

The Hakuryu looks just like an enlarged Taihou and the Zao’s superstructure and mast are not much of a departure from the Mogami class. The Myogi’s bridge also resembled that of the Modernised Kongo class. (Note that the in-game Kongo actually uses the real-life Hiei’s bridge. Hiei is the only Kongo class that have a completely different bridge than the other Kongo’s)

The Conqueror, Lion and the Monarch all resembles the Vanguard/KGV/modernised QE class’s sturdy bridge look, the secondary placement and the seaplane facility located between the two smoke stacks.


I think you all get the idea, WG is not bad at modeling fictional warship superstructures at all. They can, and they does closely examine built ship’s appearances and applied it to paper ships but with a slight modernisation effort. Such as the addition of FC radars and whatnot.

And then there’s Izumo. Man, I never knew the Japanese opted for a minimalistic appearance for their battleships!

WG’s excuse for the Izumo is that, as that’s how it looked like in the design drawing, that’s how they modelled it because that’s the official design.

Is it really?

Apart from ships, such as the Montana, Ibuki and the Amagi, they are been built when cancelled and the appearance is firmly decided in official drawings and plans. And Montana and Amagi even have mock up models built.


The Izumo is far from been a finished design. It is one of the sub-designs of the J-series of the Yamato’s preliminary designs. It only went as far as a design study.

There is a reason why only the J-series of the Yamato designs have 410mm guns as opposed to other designs which have 460mm guns. This is because it is a design study based around the fact that if it possible to for a battleship that can be built and maintained using existing dry docks and other facilities. The gun of course is downscaled to 410mm and the armour is downscaled as well.

It is a design study, and it is not even close to finalised, that’s why the drawing should never be used as the basis of the Izumo’s appearance.


This is the design the Phoenix in-game is based upon, WG, why didn’t you copy the appearance?

https://i.imgur.com/Q7CSuBD.jpg

Would you call this the Farragut?

https://i.imgur.com/LkjDrZh.jpg

If not, then why is this the in-game Izumo that we see?  (Please note: I was unable to find the exact drawing for A140-J2 which Izumo is based upon, but this is the other design with all turrets forward.)

https://i.imgur.com/Df63RPA.png

But you get the idea, the drawing is far from a complete, finalised drawing.


Check this design drawing for Moskva: 

 https://i.imgur.com/xI497na.jpg

How about this wooden mock-up of Montana at New York Navy Yard?

https://i.imgur.com/qS1u1NG.png

The reason these ships’ in-game model closely resembling their actual drawings is that they are basically finalised and that’s how they are going to look like had they being completed.

The Izumo is not.


I hope this will end the debate on the historical accuracy of Izumo’s in-game model.


Now I wish to talk about how Wargaming could fix the model.


Failure No.1 The placement of fire control director with the rangefinder.

Let’s start with the bridge,

https://i.imgur.com/dY9XTjq.jpg

Note the part in red (Main fire control director) and the blue (forward rangefinder)

For all modernised IJN battleships, there are three distinct placement styles of fire control director with the rangefinder.


The Kongo class and the Fuso class

https://imgur.com/a/E58YX

Note that Fuso’s bridge is on top, the bottom one is actually the in-game Myogi. However, as I mentioned above, the in-game Myogi actually resembles the real life Kongo. While the in-game Kongo resembles the real life Hiei.

The FC director is located forward of the rangefinder and they rotate individually.


The Nagato Class https://i.imgur.com/0FHmdF7.jpg

The FC director sits at the top while the rangefinder is located a couple of levels down. They rotate individually and the rangefinder actually rotates around a rail, (it’s hard to see the rail in my screenshot)


And there is the Hiei-Yamato style:https://imgur.com/a/2thbR

Top is Hiei (again, that’s the Kongo in-game, which is modelled after the real-life Hiei), and Yamato on the bottom.

Note that they have FC director sits directly on top of the rangefinder and they rotate together.

Coming back to the Izumo, why did you realise? https://i.imgur.com/dY9XTjq.jpg

It have the Nagato style layout.

Which completely makes no sense whatsoever. As you will see next.

The reason why Hiei have a different superstructure than her sisters is that, she was a training ship demilitarised under the treaty. And she was the last ship to be modernised and refit into service.

All the Kongo class received a second refit between 1934-1936. Except, Hiei’s modernisation began at 1937. She was used as an experiment platform to test out some of the features that would have been used later on the Yamato class. One of these are her bridge shape including her FC director and rangefinder layout. That is why they look so similar.

I don’t think it would take a genius to figure out that had Izumo been built, she would have the same style as Yamato. Unfortunately not, she retained the layout of the Nagato class.


Failure No.2 The bridge shape

Now let’s move onto the bridge itself. As we can see from my screenshot before, the Hiei and Yamato’s bridge are very similar, not only did they lose the ‘pagoda’ look common to other battleships, it looks much more compact and the shape are swept backwards. There are other features which are similar, including the AA platform (where all the binoculars are) situated directly below the rangefinder, the different platform levels, the location of AA directors and so on.

That should be what Izumo looks like.


Failure No.3 and No.4 combined: the lack of superstructure and the placement of secondaries.

Moving on, Izumo’s mid section. https://i.imgur.com/uryG4VU.jpg

404 superstructure not found.

Ehh, what on earth? How would there be barely any built up?

Even in its Hull C (did not have the credits to buy Izumo back so I borrowed a youtube thumbnail) https://i.imgur.com/1Yc2mmo.jpg

There are no superstructure. There should be plenty of superstructure around the smoke stack and between the Bridge and the aft bridge.

This is yamato on trails:https://i.imgur.com/iVFU2wd.jpg Yamato’s refits only came with the addition of AA guns and secondaries, there are always plenty of superstructure.

Why don’t Izumo have them? All nation’s new generation battleships comes with superstructure. You don’t just waste empty places a ship, you can have places for AA ammo storage, addition of AA directors, more AA guns etc.

Oh yeah, AA guns, this is where WG have shown themselves to be lazy, use the C-hull Izumo again:https://i.imgur.com/bbimvIc.jpg

Ah, fluent use of Ctrl+C and Ctrl+V, truly a masterpiece indeed.

Looking back at every nations’ new generation battleships: (Yamato, Missouri, Tirpitz, KGV) https://imgur.com/a/h286D

Note how the secondaries AA guns are all

S P A C E D

A P A R T

(and on different levels)

There are very good reasons why every nation have this layout, not only does it make all guns spread apart and firing blasts won’t affect other guns and their crews, this also gives every gun much more firing angles and they can cover multiple enemy plane approaches from different heights and different angles. And even if a bomb hit as not all of them are crammed together the damage will be smaller.

You can see, not only should Izumo have much more superstructure, she would certainly have AA guns on different levels as opposed to the in-game C hull where they line up closely with each other.

On top of that, check the A hull-https://i.imgur.com/uryG4VU.jpg

And C-hull again-https://i.imgur.com/bbimvIc.jpg

No addition of AA directors at all….whew lads...what can I say…


Failure No.5 Lack of local rangefinders on main turrets

Even though they are all located forward, there must be local range finders for turrets. See this IJN Tone picture for example: http://i.imgur.com/7hcEJbg.jpg

In-game? Not present.https://i.imgur.com/bbimvIc.jpg

Of course, not all turrets should have it. Turret A situated at the forward and in heavy seas the local rangefinder is nigh impossible to use. Turret C may have transverse problem if it have them. But how about turret B? High enough, and nothing to block it, it only makes sense for there to be local rangefinders, starting from A-hull.


Overall, my take on the Izumo’s model:

(NOTE: I rushed these with MS paint, I may redrawn these, for now they are for rough illustrative purpose only)


Overall appearance regardless of which hull:

Picture 1:  It should have Yamato/Hiei style bridge, local rangefinder to be installed on B turret.

YD67RCe.jpg


Picture 2:  More superstructure surrounding the smokestack where I coloured in red, and the funnel should be extended to avoid interference with operation on these levels.


oE6F7YU.jpg


Next, AA placements according to which hull the player is using, I tried to resemble Yamato’s historical AA refits. But without any change in actual in-game characteristics.

Hull A:

UWCwhms.png

Izumo as she was completed, red is 15.5cm, green is 12.7cm and blue is 25mm triple AA.

Note that 12.7cm is built on the superstructure, much like how Yamato is when it was completed, they are NOT on deck level.


Hull B:  Again, red is 15.5cm, green is 12.7cm and blue is 25mm triple AA.

AtaAaE1.png

The in game hull B have single mounted 25mm AA, i replaced them all with triple mount 25mm. Number of barrels stays the same as in-game (AA DPS stay the same).

The placements of the 25mm are very similar to the Yamato before Letye Gulf.

Also more Type 95 AA directors need to be installed along with the AA.


Hull C:  Again, red is 15.5cm, green is 12.7cm and blue is 25mm triple AA.

LsHTJJF.png

The number of 12.7cm increased and so two 15.5cm are removed to save weight.

I replaced all the single 25mm with triple mounts but kept the barrel count the same again so DPS is same as in-game. Placements of 25mm kind of resembles that of Yamato before final mission.

Stern has two 25mm AA.

added 4 more near the seaplane facility.

Where the 15.5cm are were plated over add two 25mm on top.

three 25mm AA added on the edges on both side.

B turret gets two 25mm on top.

Again, more Type 95 AA directors need to be installed along with the AA.


Feedbacks are more than welcome, if you have any suggestions that I may have overlooked, please feel free to tell me in the comments.

Edited by TorpedoBeat

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1 hour ago, Unraveler said:

It also has no boats on it. There's plenty of room - where are the boats?!

she have same setup like Yamato

ce67b814b3.png

A Very neat arrangement I must said. 

 

 

 

 

e9837be608.png

Drawing of A140. the earliest variant for people that never saw one

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1 minute ago, Unraveler said:

cDRWk4z.jpg

 

Do you mean the boats come out from behind that door, carried along the rail? That's pretty interesting!

Since you can see Yamato have very similiar setup (well they basicly developed from same hull design).

so..... yeah

though on Yamato, the path have less obstruction.

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26 minutes ago, Unraveler said:

cDRWk4z.jpg

 

Do you mean the boats come out from behind that door, carried along the rail? That's pretty interesting!

Yes, Yamato class have all the utility boats protected, this maximizes free deck area and reduces wind blast damage to these fragile things when a main battery shell was fired.

While Yamato have a in hull storage space and some boats were hidden under the aviation service deck, Izumo lack the latter part and all boats are to be stored inside the enclosed storage space and be deployed by a rail.

Edited by HMS_Swiftsure_08

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Well done, but a bit of my personal opinion.

FdG (and GK had that been a H class hull with altered guns) have different aviation facility layout compared to the H class design. H class ships had their catapults placed behind the Y turret at the aft deck, while in game FdG and GK have the catapult sitting between X and Y turret so WG did change some of the design.

Izumo is closely resembling the A140J series -2 config. J series were ships not armed with 460mm but with new 410mm guns, as back up plan in case the development of 460mm failed, despite this, they were supposed to hold the same status as Yamato, and they were to have the many of the same features as the actual Yamato class did. The Yamato was a very well seagoing ship, with impressively high freeboard, she is probably the best battleship against the waves in WWII.(Scharnhorst crew:*we all live in a german submarine, german submarine*) Also, these ships, as originally planned, was to participate only in the last stage of IJN’s nine-phase attack against USN. So they should not be facing extreme weather, and having RF at turret A is not impossible, Yamato also has RF on the A turret.

Edited by HMS_Swiftsure_08

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Beta Tester
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Idk, the boats are sexy enough, so I'd like WG to fix stuff like (Last Turret), buff Prinz Eugen to OP levels and introduction of more anime ships before they even try anything else.

EUtidZG.jpg

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18 hours ago, icy_phoenix said:

Izumo is fine in terms of ship design. All wg need is to fix the damn accuracy.

Disagree, the poster has done his (her?) research well. There's some good points here.

 

Tee

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