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PostPosted: Sun May 03, 2020 9:36 am 
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As promised. (Credit: Gran Prix Shuppan IJN Cruiser volume)


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Model E Turret (20cm) Takao class.jpg
Model E Turret (20cm) Takao class.jpg [ 309.63 KiB | Viewed 998 times ]
Model E3 Turret (20cm) Tone class.jpg
Model E3 Turret (20cm) Tone class.jpg [ 292.83 KiB | Viewed 998 times ]
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PostPosted: Sun May 03, 2020 11:28 am 
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Thanks Dan. :thumbs_up_1: I am collecting material on these vessels and that is of great help for me! :smallsmile:

Biggest difference seems to be the 8m rangefinder on TONE against the 6m rangefinder on the TAKAO. There seem to have been 2 variants on TONE, however.

Have a nice sunday :wave_1:

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PostPosted: Thu May 07, 2020 1:20 pm 
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Location: The Savo Island
Illustrator of the then Kawasaki Shipbuilding co.,mr.Hayashi Kanji.was certain that Maya had degaussing cable,and,he said he didn´t quite remember how exactly it was arranged,so,he sprang it over on his drawing of Maya 1944. I took the liberty of trying to fill it with the cable on his behalf now.
I can safely say the degaussing cable was a "standard installation" to all IJN fighting ships,it was a must. If one ship would insist on going without having it, there ought to have been a very special,unfallible reason to avoid having the cable. None is able to point out the reason for a non-cable condition for cruiser Maya.
There was shortage of metals before the outbreak of the Pacific Ocean War,so,the cabinet ministers and their staffs lied to the Emperor when being asked by Him. The metals recovery law,as part of National general mobilizaton Law,was put into force,as early as in 1940.

cheers,
mucho


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ASI1-1 舷外側面原図初期 - Windows Billedfremviser[4]cc.jpg
ASI1-1 舷外側面原図初期 - Windows Billedfremviser[4]cc.jpg [ 63.45 KiB | Viewed 917 times ]
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PostPosted: Thu May 07, 2020 8:01 pm 
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Thanks for posting the drawing, Mucho.

Isn't the "argument" really about whether or not Maya was equipped with the cable after her rebuilding? Or is it possible that the cable was internal? Oyodo and re-built Isuzu are what come to mind about ships without an external cable.


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PostPosted: Thu May 07, 2020 10:29 pm 
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Yea, about the cable, ships with DC-current system can be equipped with deg. cable. All Takao class cruisers had DC.
Whereas, Oyodo had AC-current system. The degaussing cable gets power from DC-current, but can´t do this from AC-current ships. This could be the reason why the cable was omitted from Oyodo. Re AA cruiser Isuzu if she was with Dc-current,it could receive the cable installaton after the trial run was over.

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PostPosted: Thu May 07, 2020 11:20 pm 
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I don't know whether IJN ships used a DC or AC main system supply. Ships typically had multiple voltage/frequency electrical supplies. But regardless, the degausing system would need it's own DC power supply that could be varied to reduce the ship's magnetic signature. An AC to DC converter could be used for this.

The minesweeper I served on had primary 60 Hz and 400Hz AC supplies and a DC degausing system.

Phil

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PostPosted: Fri May 08, 2020 7:20 am 
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Hi,

this maybe old news... nice 3D model of TAKAO as in 1942 :


https://www.youtube.com/watch?v=XqFXVa1zSaY

Is this a good and "correct" model?

Bye :wave_1:

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PostPosted: Fri May 08, 2020 7:22 pm 
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hi,
There is a bit more to checking of Chokai´s underwater image. I feel this seems to match the drawing of her. Again,the cable most probably got off when scuttling by Fujinami´s torpedoes.
Re.Maya it will be a boon to research efforts if one can find image(s) of her from R/V Petrel´s movie.When it was first introduced on the net last year, Dan got in touch with me,then I might have said to him that some visual proof of pesence of the degaussing cable is found in the movie. Have kept it since. In the image posted anew, there is something that looks like Edward´s scissors hand,I think this very much looks like disected 9 pcs of coild cable.


cheers,
mucho,


Attachments:
ASIASIWatch - 発見 -[18]Chokai compo.jpg
ASIASIWatch - 発見 -[18]Chokai compo.jpg [ 33.06 KiB | Viewed 813 times ]
ASIIJN Cruiser Maya -.jpg
ASIIJN Cruiser Maya -.jpg [ 33.18 KiB | Viewed 813 times ]
ASIIJN Cruiser Maya -a.jpg
ASIIJN Cruiser Maya -a.jpg [ 57.4 KiB | Viewed 813 times ]
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PostPosted: Fri May 08, 2020 8:11 pm 
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Quote:
Yea, about the cable, ships with DC-current system can be equipped with deg. cable. All Takao class cruisers had DC.
Whereas, Oyodo had AC-current system. The degaussing cable gets power from DC-current, but can´t do this from AC-current ships. This could be the reason why the cable was omitted from Oyodo. Re AA cruiser Isuzu if she was with Dc-current,it could receive the cable installation after the trial run was over.


I learn something new every day.

Quote:
,I think this very much looks like dissected 9 pcs of coiled cable.


Hmmm... there's definitely something there.


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PostPosted: Tue May 12, 2020 1:39 am 
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The cable is approximately 4,5 meter beow the shield deck level at the midter-section was my renewed observation.
Will be sending this info with visual proof from Tawitawi to a certain shipbook co. in the homeland. A book is slated to come out probably next year if everything goes well,suppose no typhoon or a new corona info/pandemic stop them.

mucho,


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PostPosted: Tue May 12, 2020 11:41 am 
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I hope to see it someday. :smallsmile:


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PostPosted: Sat May 16, 2020 3:48 pm 
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I have the 1/350 Aoshima 1/350 Takao 1942 and the instructions call for a ' H37 Wood Brown' between the trolley rails on the aircraft deck. Are they correct in calling out a wood color? My Anatomy of the Ship Takao shows steel deck. Which is right? Thanks for any replies.


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PostPosted: Sat May 16, 2020 5:34 pm 
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The wood color is to be considered as linoleum covered area and not a wooden covered one.

So the question is : was this zone painted metal covered, or reddish brown colored linoleum covered.

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PostPosted: Sat May 16, 2020 7:05 pm 
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The AOTS book shows linoleum between the trolley rails.There is one photo of Atago in 1942 that shows what might be brass tie-down strips in this area. It's not clear.


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PostPosted: Sun May 17, 2020 8:10 am 
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Dan K wrote:
The AOTS book shows linoleum between the trolley rails.There is one photo of Atago in 1942 that shows what might be brass tie-down strips in this area. It's not clear.



Are you referring to plan veiw H17/2 on page 220? I am looking at plan veiw H18/3 on page 223.


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PostPosted: Sun May 17, 2020 8:56 am 
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No, I am also looking at H18/3. Those are tie-down strips between the rails. Only the turntables are treaded between the rails.


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PostPosted: Sun May 17, 2020 9:16 am 
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Thanks. I saw those lines but thought they were different as they are drawn differently in other drawings (e.g. H18/2)in the book.


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PostPosted: Sun May 17, 2020 2:54 pm 
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18/2??? That's a top down, cutaway view under the aircraft deck.


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PostPosted: Mon May 18, 2020 4:30 am 
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Yes, but I was comparing how he depicted the linoleum strips on the main deck to those on the airplane deck on drawing H18/3.


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PostPosted: Mon May 18, 2020 3:05 pm 
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Understood. Can't really explain the different pattern. Different wear and stress, I imagine.


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