Interesting Japanese Cruiser-Carrier Hybrid

[Tzoli]

I've recently found this pretty interesting Japanese Project at the Hiraga Archive.
It looks like a hybrid cruiser-carrier warship from 1920's era. There seems to be a few variants mostly by how large the hanger should be and where to locate the conning tower and AA guns.
Apart from the unique look of this ship design the stats are even more interesting!

Dimensions: 231,65m x 18,3m x 5.5m
Displacement: 10,000tons standard
Engine Power: 60.000shp, 4 shafts
Maximum Speed: 53km/h (29knots)
Armour: Belt: 51-76mm, Deck: 51-76mm
Armaments:
6x3 152mm Guns
2x2 120mm AA Guns
8x1 610mm Torpedo tubes
5-9 Aircraft

 

[covert_shores]

Fascinating. First instance of a skijump?

 

[Hood]

A very interesting. Certainly compares well against the similar designs pursued elsewhere during the late 1920s-mid-30s. Actually this is perhaps one of the more plausible hybrids I've seen, though the short flightdeck would have posed problems. The lip at the end could either be to smooth the airflow over the flight deck, or indeed to inpart a little extra vertical momentum to make sure the aircraft clears the turrets.

What was the obsession with mounting heavy DP guns so high up in the ship. The Hiraga 1930 battleship has the same style.

 

[Tzoli]

What was the obsession with mounting heavy DP guns so high up in the ship. The Hiraga 1930 battleship has the same style.

To provide clear firing arcs and excellent line of sight.

As for the design others suggest not a good one because of it's hybrid nature and heavy armament on only 10.000tons.

 

[Graham1973]

All the image links in the original post are broken.

 

[00-PureEvil-00]

All the image links in the original post are broken.

That's a forum bug. If you press "reply" on the post, the images will be visible in the quote.
But just in case the links  do fail, I'll double the images here.
(Sorry for a little necro)

 

[Scott Kenny]

Tone-class competitor?

 

[Tzoli]

No, this was from the 1920's and I had the feeling a British designer inflenced it

 

[Scott Kenny]

No, this was from the 1920's and I had the feeling a British designer inflenced it

So more like Tone-class inspiration, then...

 

[Tzoli]

The Tone class was designed in 1934/35 shortly after Mogami. It started as an Improved Mogami on 50 tons less displacement (8.450 rather 8.500tons).

I presume you do not mean the 1910 Tone class scout cruiser.

 

[Tzoli]

Probably associated with this Thornycroft Seaplane Tender design which can also be found in the Hiraga Archive:

https://www.secretprojects.co.uk/threads/thornycroft-patented-design-for-fast-seaplane-carrier-1924.12104/

 

[Scott Kenny]

The Tone class was designed in 1934/35 shortly after Mogami. It started as an Improved Mogami on 50 tons less displacement (8.450 rather 8.500tons).

I presume you do not mean the 1910 Tone class scout cruiser.

Yes, I meant the next class after the Mogami.

 

[Ticonderoga]

I've recently found this pretty interesting Japanese Project at the Hiraga Archive.
It looks like a hybrid cruiser-carrier warship from 1920's era. There seems to be a few variants mostly by how large the hanger should be and where to locate the conning tower and AA guns.
Apart from the unique look of this ship design the stats are even more interesting!

Dimensions: 231,65m x 18,3m x 5.5m
Displacement: 10,000tons standard
Engine Power: 60.000shp, 4 shafts
Maximum Speed: 53km/h (29knots)
Armour: Belt: 51-76mm, Deck: 51-76mm
Armaments:
6x3 152mm Guns
2x2 120mm AA Guns
8x1 610mm Torpedo tubes
5-9 Aircraft

While an interesting design I do question the ability of the IJN to fit 18 six-inch guns and a flight deck/ hangar on 10000 tons.

Granted, the Brooklyns managed 15 guns and I believe there was a 16-gun Town-class study, but regardless the estimated displacement seems optimistic to say the least.

Thoughts?

 

[Tzoli]

The 6 triple turrets would weight 1.000tons based on the 180tons on the 155mm triples. Armour was rather thin 76mm max so that saves weight considerably. So it is very much possible.

 

[Ticonderoga]

Does the 180 ton figure include the mass for the magazines and ammunition?

 

[Tzoli]

Only the turrets but I never knows on navweaps if it includes the guns or not.
Magazines protection and ammo are different weights.
Ammo should be 150 shells per gun and weights 45,36kg so 18*150*45,36 = 122,5tons for the 6" guns only

 

[PMN1]

As long as its only deployed on a boating lake.....in good weather?

 

[Tzoli]

Why?
It is indeed narrower than Mogami or Brooklyn but much longer.

 

[Mera A Firewing]

That's a forum bug. If you press "reply" on the post, the images will be visible in the quote.
But just in case the links  do fail, I'll double the images here.
(Sorry for a little necro)

These are pretty interesting.

 

[Tzoli]

Here is the Hiraga Archive link:

〔10000T×39kts. 6"×18門 航空巡洋艦試案〕 | UTokyo Digital Archive Portal

provider：Yuzuru Hiraga Digital Archive (Kashiwa Library)

da.dl.itc.u-tokyo.ac.jp

ID: 22340101

 

[YourChair]

I mean, clearly this is merely a sketch design, there's no way the magazines can fit under that side armor, and that destroyer-looking hull form is questionable.
And of course, it would suffer even more than the Mogamis from topweight + structure strength issues.

 

[Tzoli]

Neither destroyer hull form neither insefiicent space. look at the 4th image, clearly shows the magazine space

https://www.secretprojects.co.uk/threads/interesting-japanese-cruiser-carrier-hybrid.25095/#post-713930

Hull form is cruiser type similar to the Furutaka/Aoba/Myoko classes in my opinion