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Karle94
Post subject: Proposed Rebuild For the Leonardo da VinciPosted: April 18th, 2020, 7:21 pm
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On the night of August 2nd-3rd, 1916, whilst loading ammunition onboard, there was an internal explosion inside the Leonardo da Vinci that killed 248 men. The ship capsized and sank in 11 meters deep water. An inquiry was held, and ultimately, saboutage by the Austrio-Hungarians was blamed for the sinking. Although unstable propellant may have been likely as well. The ship was refloated in 1919. The hull was deemed to be intact and in good condition.

As 1921 was beginning the Caracciolo class was cancelled for economical reasons. Therefore plans were made to rebuild the Leonardo da Vinci, replacing the old 4,7in guns with the 6in guns from the Caracciolo class, and the forward superstructure rebuilt along the lines of the Andrea Doria class, with the fore funnel shortened to the same height as the aft funnel. The Q turret was to be removed, and the space used for 4x3in AA guns. All AA guns except of the ones on the X turret were moved to the sides of the fore and aft conning tower/bridge structure and two fore of the A turret. New propulsion plant would increase the top speed with 1,5kts and four boilers were to be converted into oil firing. The armored deck would be increased to to 5 inches and the magazine to be moved to safer positions.

None of the plans would come to fruition as any plans were killed by the Washington naval treaty.

The moderate proposed rebuild:
[ img ]

There is another design that I will do at a later time, this one kept the Q turret, and removed the B turret instead for a completely different style of superstructure and interestingly, a US-style cage mast.

The article where the drawings and info is based on can be found here:
https://stefsap.wordpress.com/2016/03/0 ... ing-plans/


Last edited by Karle94 on October 15th, 2020, 1:13 am, edited 1 time in total.

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emperor_andreas
Post subject: Re: Proposed Rebuild For the Leonardo da VinciPosted: April 18th, 2020, 10:07 pm
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Interesting design!

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JSB
Post subject: Re: Proposed Rebuild For the Leonardo da VinciPosted: April 19th, 2020, 12:34 am
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Karle94 wrote: *
None of the plans would come to fruition as any plans were killed by the Washington naval treaty.
Love the drawing but this part is questionable as she was listed as a kept ship so could have been rebuilt is it not more just money needed to do it? (any rebuild in any configuration could presumably have counted as a new ship legally under the replacement clause as well so dropping a main gun or adding weight would be fine as they could go to 35,000t/16")
Quote:
Chapter II: Rules Relating to the Execution of the Treaty - Definition of Terms
Part I: Capital Ships which may be Retained by the Contracting Powers

In accordance with Article II, ships may be retained by each of the Contracting Powers as specified in this Part.
Ships which may be retained by Italy
Name Tonnage (metric tons)
Andrea Doria 22,700
Caio Duilio 22,700
Conte Di Cavour 22,500
Giulio Cesare 22,500
Leonardo Da Vinci 22,500
Dante Alighieri 19,500
Roma 12,600
Napoli 12,600
Vittorio Emanuele 12,600
Regina Elena 12,600
Total tonnage 182,800

Italy may lay down new tonnage in the years 1927, 1929 and 1931, as provided in Part 3, Section II.


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Hood
Post subject: Re: Proposed Rebuild For the Leonardo da VinciPosted: April 19th, 2020, 9:49 am
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Never seen this rebuild plan before, so this is very interesting.

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Karle94
Post subject: Re: Proposed Rebuild For the Leonardo da VinciPosted: October 15th, 2020, 1:14 am
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I've updated the drawing with a more accurate anti-fouling color.


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