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Ezaki Iwakichi Battleship Design A by Tzoli Ezaki Iwakichi Battleship Design A by Tzoli
Ezaki Iwiakichi who was the pupil of Kikuo Fujimoto and who designed the Tone class light, later heavy cruisers proposed two battleship designs in mid 1934 after the Admiralty issued a requirement for a new set battleships. Ezaki was heavily influenced by Fujimoto and made two variants, one faster and one slower, both propelled by a diesel only engine of 140.000shp, forward concentration of main armament and a secondary and AA armament which was later chosen for the Yamato class Battleships.
Though diesel engines provide excellent range for warships, they are not the best choice for high speed, thus to achieve the desired 57-61km/h (31-33knots) a long and sleek hull was required with 6 shafts to provide the necessary thrust.


Though no sketch drawings seem to survive the past 80 years based on the available data as well as the various large gun proposals: two 45 calibre and two 50 calibre (one lighter and one heavier design each) 46cm cannons I've made this drawing using ideas from the Tone, Hiei and Yamato.

The design had the following characteristics:
Dimensions: 301,75 (wl)  x 38,4 x 10,36m 
Displacement: 67.000tons (standard), 77.000tons full load
Armour: Unknown probably around 200mm deck and 400mm Belt
Engines: 140.000shp, 6 shafts, Diesel engines
Speed: 61km/h (33knots)
Range: 18.500km at 33km/h (10.000nm at 18knots)
Armaments: 
3x3 46cm/50 Type 94 Cannons,
4x3 15,5cm/60 Type 90 Guns
4x2 127mm/40 Type 89 DP-AA guns
Unknown number of light AA guns, I've choose 6 twin 25mm/60 Type 96 AA guns
Unknown number of Seaplanes (I choose Kawanishi E7K Alf and Nakajima E8N Dave planes)

Data Tables describing the design:
i.imgur.com/V00Xjai.jpg
ktymtskz.my.coocan.jp/J/JP/yam…
ktymtskz.my.coocan.jp/J/JP/yam…

Version B can be found here:
tzoli.deviantart.com/art/Ezaki…
Add a Comment:
 
:icondonlittle666:
DonLittle666 Featured By Owner 4 days ago  New Deviant
Good Job
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:iconangelisgoodwen:
AngelisGoodwen Featured By Owner 5 days ago
Very nice!
Reply
:iconuglygosling:
uglygosling Featured By Owner 6 days ago
I'm curious, I notice this design is larger than Yamato and has less powerful engines, yet is designed to be faster. How?
Reply
:icontzoli:
Tzoli Featured By Owner 6 days ago  Hobbyist Digital Artist
Well the longer ship should had provided the extra speed necessary but as these were rough estimates in my opinion, for 31-33knots you need 230-300.000shp rather 140.000shp.
On that power only 27-28knots is achievable.
Reply
:iconuglygosling:
uglygosling Featured By Owner 6 days ago
And our Iowas when new were designed for 33 knots on about 57000 tons full load
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:icontzoli:
Tzoli Featured By Owner 5 days ago  Hobbyist Digital Artist
Tonnage is less effect on speed than hull form, length to beam ratio and engine power.
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Edited Apr 16, 2018  New Deviant

Is your project drawing all the preliminary projects that led to the design of the Yamato?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 16, 2018  Hobbyist Digital Artist
And further, until the 100.000ton monster
Reply
:iconalfredo555:
Alfredo555 Featured By Owner 5 days ago  New Deviant

How many designs are you going to draw in this project, approximately?
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:icontzoli:
Tzoli Featured By Owner 5 days ago  Hobbyist Digital Artist
around 40
Reply
:iconalfredo555:
Alfredo555 Featured By Owner 5 days ago  New Deviant
Guaaaaaaaaauuuuuuuuuuuu.
Reply
:icontzoli:
Tzoli Featured By Owner 5 days ago  Hobbyist Digital Artist
?
Reply
:iconalfredo555:
Alfredo555 Featured By Owner 5 days ago  New Deviant
In Spanish it is an expression of very pleasant surprise. As "magnificent" or "excellent".

Reply
:icontzoli:
Tzoli Featured By Owner 5 days ago  Hobbyist Digital Artist
Ahh, I see
Reply
:iconfrankvc:
FrankvC Featured By Owner Apr 16, 2018  New Deviant
If they ever built this thing and modernized it to fit, The Izumo of WoWs would be sweating right now. Such amazing and great design. The lack of funnel bugs me but cause is diesel. Also why If the Panzershiffes were also diesel, why did they have a funnel?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 16, 2018  Hobbyist Digital Artist
Designers choice I assume. They didn't want the exhust pipe to run on the bridge superstructure I guess.
The preliminaries of the Deutshclands, the Zenker designs too lacked funnels.
Also on my drawing I either put a smaller scale funnel and then something like two cranes for the boats, or only exhaust ports and a single crane.
One of the Zenker designs:
frm-wows-eu.wgcdn.co/wows_foru…
I will try to find more. See the very small funnel aft of the forward mainmast?

Diesel battleship from 1912:
stefsap.wordpress.com/2015/11/…
Basically Junker's idea to sell his new diesel engines

Armoured gunboat / Coastal battleship / Monitor probably for export:
www.student.oulu.fi/~tjama/lai…
Do you see the very small funnels?
Reply
:iconmidway2009:
Midway2009 Featured By Owner Apr 16, 2018  Hobbyist Traditional Artist
Awesome design. :eyepopping:
Reply
:iconuglygosling:
uglygosling Featured By Owner Apr 15, 2018
Where is the funnel(s)?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
Full Diesel Propulsion does not require large funnels but rather small exhaust ports.
Examples:
Italian Monte Grappa class monitors,
Mizuho, Nisshin seaplane tenders
Soviet pre WW2 monitors 
Most of the British escort carriers

Though if there are space for a funnel then it was installed

Also most WW2 and pre WW2 diesel designs does not feature funnels at all!
Reply
:iconjerzeyboy1995:
jerzeyboy1995 Featured By Owner Apr 15, 2018  Hobbyist General Artist
Like the superstructure. Love the gun layout. 
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Apr 15, 2018  New Deviant
Would the other Iwakichi design (design b) be very different in its exterior aspect of this?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
It depends on me entirely, as there are no sketch drawing survived.
Reply
:iconangelisgoodwen:
AngelisGoodwen Featured By Owner Apr 15, 2018
I really like this one!
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
:)
Reply
:iconangelisgoodwen:
AngelisGoodwen Featured By Owner Apr 15, 2018
You're very welcome!!!
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Apr 15, 2018  New Deviant
Guauuuuu. 
Magnificent ship. Great job. Is it the largest vessel of the three Iwakichi designs?
Reply
:iconoboy220:
oboy220 Featured By Owner Apr 15, 2018
Great work. Really like the look of the ship. Just wonder if how this compares to the Yamato.
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
There were only two Iwakachi designs, the 3 designs with 36,41 and 46cm are the Keiji Fukoda ones
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Hidden by Commenter
:icondarkwanderer123456:
darkwanderer123456 Featured By Owner Apr 15, 2018
This is Ezaki diesel engine operated BB, hence there's no need for funnel.

Some example with German 1920~ inter-war project came up with some diesel powered monitor, mini-battleship and coastal defense battleships, oh another commerce-purpose 26.000tons diesel battleship by professor Hugo Junker.
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
Who commented that hidden it's text? I cannot read what he wrote!!

Also I think you are talking partly about the Zenker designs
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:icondarkwanderer123456:
darkwanderer123456 Featured By Owner Apr 15, 2018
OP wondering where the funnel are, but i already replied.

I didn't know Zenker designing diesel powered warships (ofc, apology if i lack some inter-war German warships projects, though i know he do design a battlecruiser with 4x2 305mm guns around 1928), Hugo battleship just to PR for his new diesel and i don't think it never chose and authorized and himself not a naval architecture either.

anyway diesel warships are very unique and strange to me and am kinda lacking knowledge about them.
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:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
Modern day Diesel is the standard, but in the 1930's and 40's only the subs were equipped with them as a standard engine, very few surface ships had them, some escorts, Seaplane tenders (Mizuho for example) and auxiliary ships, apart from the Deutshclands. Though there were Combined COSAD oens like the Interbellum German cruisers Minelayer cruiser Adventure and some others.

This design had funnels but they are more like exhaust ports around the side of the superstrucutre.
Reply
:icondarkwanderer123456:
darkwanderer123456 Featured By Owner Apr 15, 2018
Interesting and guess i learned something more.

and i also noticed on your ship there're some exhaust ports on main deck as well and yeah i do remember some inter-war German never-were diesel powered ships have sorta pipes on sides or either ports on decks.

Do you think diesel engine better than traditional coal-powered and oil/fuel? due to their greater speed efficiency.
Reply
:icontzoli:
Tzoli Featured By Owner Apr 15, 2018  Hobbyist Digital Artist
No there are exhaust ports (the ones which looks like curved outward) and ventilation shafts which are more numerous.

Earlier diesel engines required frequent maintenance and a in many cases the entire engine was required to be replaced, for this operation large space was required on the main deck for such occasion the engine could be removed. Now removing deck armour was quite difficult task, this was why All steam turbine propulsion was chosen for the Yamatos rather the mixed Diesel and Steam.

Only some minor nations warships and very old cruisers used coal as a power source in WW2! (And the British convoy escort ships...) Oil is much better.

Also Diesel engines requires refined Diesel oil to run while the boilers of the Steam turbines could run on simple crude oil making refuelling and logistics simplified.
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:icondonlittle666:
DonLittle666 Featured By Owner Apr 13, 2018  New Deviant
what is this supposed to be
Reply
:icontzoli:
Tzoli Featured By Owner Apr 14, 2018  Hobbyist Digital Artist
You will see
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Apr 11, 2018  New Deviant

I also look forward to your design. Your work, showing little-known designs, is magnificent. I am an enthusiast of never were battleships or battlecruisers. Thank you very much for your contributions.
Reply
:icontzoli:
Tzoli Featured By Owner Apr 11, 2018  Hobbyist Digital Artist
Yes I like never were designs
Reply
:icondarkwanderer123456:
darkwanderer123456 Featured By Owner Apr 11, 2018
hey Tzoli, been awhile since i visited your never A-H grand project and speaking of never-were designs, check the WOWS news yet? the alternative "gun-boat" IJN DD lines just got tier IX and X (tier IX is Akizuki Kai "Type-B", real design but cancelled, a improve version with 35 knots(?) from previous Akizuki) and guess which tier X is... YOUR SUPER-KAI AKIZUKI with 5x2 100mm Type 98 and a single quintuple launchers (LOOK EXACTLY JUST LIKE YOUR DESIGN!!!), though WG claim to be paper ship but your mentioned its own fiction design (maybe or actually real design?).
Reply
:icontzoli:
Tzoli Featured By Owner Apr 11, 2018  Hobbyist Digital Artist
No, I don't play World of Warships anymore.
There was a real Super Akizuki project, an improved Akizuki, and a similar Super-Shimkaze one too but there were no 5 turreted destroyer project of the IJN. Can you give me a link?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 11, 2018  Hobbyist Digital Artist
Hmm
Reply
:iconfrankvc:
FrankvC Featured By Owner Edited Apr 11, 2018  New Deviant
Man I love these projects!! This kinda reminds me of a Yamato made by Fujimoto; the A150 maybe..Those aft secondary guns and all forward triple turrets. Cant wait for it!
Reply
:icontzoli:
Tzoli Featured By Owner Apr 11, 2018  Hobbyist Digital Artist
A-150 isn't a Fujimoto design, Kikuo Fujimoto died in very early 1935 quite young (age 46) A-150 was the improved Yamato but precise technical data is very scarce!
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:iconfrankvc:
FrankvC Featured By Owner Apr 12, 2018  New Deviant
I don’t know why I added Fujimoto lol...can’t wait to see it finished!!
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Apr 10, 2018  New Deviant
Oh, from what is seen in the new structures, it is much more modern than the Hiraga project. I suppose a preliminary draft of the A-140 of the mid-30s. It seems that the provision of secondary armament has gone. In the first illustration four tripkles towers of 155 mm appeared, one a bow, elevated, and three astern above raised. Now there is not the bow and appear all aft, two raised and two lateral. That provision fits with some of the A-140's proposals, if I'm not mistaken. Great job.
Reply
:icontzoli:
Tzoli Featured By Owner Apr 10, 2018  Hobbyist Digital Artist
As there are no drawings or sketches found I have the opportunity to freely design the ship within the limits of the set data. Hence I improved the AA layout especially the broadside and counter-balancing the the main guns weight forward somewhat by putting the 155mm guns aft.
Sidenote: The designer is the same who made the Tone class light- later heavy cruisers
Reply
:iconalfredo555:
Alfredo555 Featured By Owner Apr 10, 2018  New Deviant
If I have not misunderstood, what you want to tell me is that you have "experimented" with a design of four triple towers 155 mm in the center of the ship, one forward and three aft, and then decide on that configuration of four towers Stern more like several designs of A-140. Do you mean that?
Reply
:icontzoli:
Tzoli Featured By Owner Apr 10, 2018  Hobbyist Digital Artist
No, I meant that by putting a triple 155mm in a superfiring position forward I would had too small space for the AA guns to put on the centreline. And what I've said: All big guns forward is a strain on the hull and needs some counterbalance or it would be nose heavy hence I've put the 155mm guns aft which was my idea since the beginning just a superfiring turret forward looked nice.
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