how many Kampon water-tube boilers were on the shinano?

[aurelien wolff]

I want to know because I got a source that state only 8 were actually onboard the ship because 4 couldn't be delivered because of the delay and wikipedia claim 12,wich one is correct?

[fontessa]

Hello aurelien wolff,

I got a source that state only 8 were actually on board the ship because 4 couldn't be delivered because of the delay and wikipedia claim 12,which one is correct?

The original design had 12 boilers. According to "空母信濃の生涯" Shinano’s Life written by 豊田穣 Toyoda Jo, only 8 boilers were active and maximamu speed was remitted to 20 - 21 Knots. And According to "牧野茂艦船ノート" Makino Shigeru Worship Note written by 牧野茂 Makino Shigeru, 9 boilers had been integrated when the modification to an airclaft carrier was desided.
豊田穣: Ex IJN Officer (Carrier Bomber Pilot)
牧野茂: EX IJN Officer (Technical, Spesialty was Ship Building)

Because SHINANO had 4 engines and 4 screws, I guess 8 boilers were active for smooth power transmission.
The below is original layout of 4 engines and 12 boilers.

Shinan.jpg (91.53 KiB) Viewed 3978 times

fontessa

[aurelien wolff]

what do you mean by "active"? (I'm french,sorry for my misunderstanding) were all the boilers here or not?

[fontessa]

Hello aurelien wolff,

what do you mean by "active"?

I meant "operating".

were all the boilers here or not?

Unfortunately, there is no material left to show how the remaining four boilers were.

fontessa

[aurelien wolff]

thanks so for the remaning boler you could they were either not there because of delay of the constructor or they didn't use it (it seem to depend from the source use by the autor)

[ijnfleetadmiral]

Blueprints for the Yamato class are scarce. Plans for Shinano are practically nonexistent, unfortunately. If any still exist, they're locked down in the JMSDF Archives and may never see the light of day; the Japanese government still wishes to keep her a secret even to this day, to the point of refusing permission to search for her wreck. Dr. Robert Ballard stated he was denied twice. Hopefully, the RV Petrel team will have better luck in the future.

[Jack Nisley]

Based on "Battleships: Axis and Neutral Battleships of World War II" by Garzke and Dulin, the design called for 12 boilers to produce 27 knots max speed. They say that all 12 boilers were installed, but only 8 were operational. The other four boilers appear not to have completed fitting out/final assembly. Boilers (major components) would have to have been installed prior to completion of deck structures above the Boiler Rooms. Steam piping, boiler fittings, and auxiliary machinery probably still incomplete due to rush to get Shinano out of Yokosuska Navy Yard to Kure.

Jack Nisley

[Eugen Pinak]

Blueprints for the Yamato class are scarce. Plans for Shinano are practically nonexistent, unfortunately. If any still exist, they're locked down in the JMSDF Archives and may never see the light of day; the Japanese government still wishes to keep her a secret even to this day, to the point of refusing permission to search for her wreck. Dr. Robert Ballard stated he was denied twice. Hopefully, the RV Petrel team will have better luck in the future.

I fail to see, what's so secret about "Shinano"? Other "Yamato"-class blueprints are publicly available.

[ijnfleetadmiral]

I guess it's because she was carrying Ohkas on her final voyage or something...no clue why the Japanese government won't allow for her wreck to be located.

[fontessa]

It is difficult for me to think that the transportation of Oka is the reason for the disapproval of the location of Shinano. Considering her sinking location is deep in the Nankai Trough, it is unlikely that the location was planned.

fontessa

[ijnfleetadmiral]

According to Wikipedia, she's supposedly about 4,000 meters (13,000 feet) down, so if she's in one piece and upright, she might be in remarkable shape. It would be incredible if this was true.

[Eugen Pinak]

I guess it's because she was carrying Ohkas on her final voyage or something...no clue why the Japanese government won't allow for her wreck to be located.

USA know about Okhas more, than Japan.

[Eugen Pinak]

According to Wikipedia, she's supposedly about 4,000 meters (13,000 feet) down, so if she's in one piece and upright, she might be in remarkable shape. It would be incredible if this was true.

According to _English_ Wikipedia Japanese Wiki says about 6-7000 meters and difficult search conditions.

[ijnfleetadmiral]

'Difficult' means 'easy reach' for a certain research vessel whose name starts with 'P'.

[fontessa]

And According to "牧野茂艦船ノート" Makino Shigeru Worship Note written by 牧野茂 Makino Shigeru, 9 boilers had been integrated when the modification to an airclaft carrier was desided.
牧野茂: EX IJN Officer (Technical, Spesialty was Ship Building)

I was my mistake. The below is correct:
And According to "幻の空母信濃" written by 安藤日出男 ANDO Hideo, 9 boilers had been integrated when the modification to an airclaft carrier was desided.

only 8 were actually onboard the ship because 4 couldn't be delivered because of the delay

The remodeling plan for an aircraft carrier was decided in November 1942. The completion date was postponed to February 1945. Due to the loss of aircraft carriers in the Mariana Battle, the completion date was shortened to 15 October 1944. The Naval General Staff was eager to bring SHINANO to the Philippines. A lot of work was skipped in order to achieve the shortened completion date. 12 boilers were incorporated, but 4 could not be adjusted. Although the remaining 8 boilers were operational, the speed that could be achieved by this was maximum 21 knots, the 1st battle speed.

fontessa