Search found 3451 matches

by Alberto Virtuani
Thu Aug 22, 2019 7:36 am
Forum: Bismarck General Discussion
Topic: Battleship Bismarck: A Design and Operational History
Replies: 39
Views: 7923

Re: Battleship Bismarck: A Design and Operational History

Any comment to the map at page 211 (viewtopic.php?f=1&t=8258&start=30#p84686) ?
My points still wait for a meaningful reply (...possibly coming from someone able to provide such a reply...)

In the meantime, enjoy the Groundhog Day and mostly the maps !
by Alberto Virtuani
Wed Aug 21, 2019 10:57 am
Forum: Bismarck General Discussion
Topic: Battleship Bismarck: A Design and Operational History
Replies: 39
Views: 7923

Re: Battleship Bismarck: A Design and Operational History

Pgollin,
very politely, PLEASE let’s speak about the book and the map, in case you have any “argument”.....
by Alberto Virtuani
Wed Aug 21, 2019 6:27 am
Forum: Bismarck General Discussion
Topic: Battleship Bismarck: A Design and Operational History
Replies: 39
Views: 7923

Re: Battleship Bismarck: A Design and Operational History

Hello everybody, I have just got the book yesterday (it has been unfortunately delivered with a certain delay in Italy, during August, while I was on vacation). A wonderful volume from graphical viewpoint, with (most probably) quite detailed information especially related to operational rather than ...
by Alberto Virtuani
Fri Aug 09, 2019 4:31 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: 3-shaft propulsion

Hi Thorsten, from what I read in your posted table (http://www.kbismarck.org/forum/download/file.php?id=3574), it looks very unlikely that the twins could achieve the 32 knots (something around 190000 shp would be needed). Which displacement these data refer to for Gneisenau ? Sorry if my question i...
by Alberto Virtuani
Wed Aug 07, 2019 1:49 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: 3-shaft propulsion

Hello everybody, Herrr Nilsson wrote: "What are you looking for exactly?" Maximum (design, extrapower and actual) power for all 4 German battleships and their corresponding maximum speed, based on their power plant differences (if any relevant to these data). AFAIK (looking for confirmation): for bo...
by Alberto Virtuani
Tue Aug 06, 2019 5:19 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: 3-shaft propulsion

Hello everybody, Herr Nilsson wrote: "Scharnhorst's and Tirpitz' turbines were of similar design, but Bismarck's was very different." Thanks, but apart from turbine design difference (that surely affected endurance), I could find no reliable confirmation about the different battleships (Scharnhorsts...
by Alberto Virtuani
Mon Aug 05, 2019 4:18 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: 3-shaft propulsion

Hello everybody, Thorsten Wahl wrote: "Bismarcks machinery was more sturdy, the complete steam piping was much better shock protected." Hi, Thorsten, thanks for your answer to my question. From what you write, I understand that the power plants were the same in terms of boilers and turbines, just mo...
by Alberto Virtuani
Wed Jul 31, 2019 5:04 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

3-shaft propulsion 3

Hello everybody, pasoleati wrote: "As far as I remember what Whitley says, even Scharnhorst and Gneisenau had slight differences in their machinery." The manufacturer was different and the layout of the tubines/reduction gears was different, but the machinery was designed for the same output power. ...
by Alberto Virtuani
Wed Jul 31, 2019 3:34 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: Battleship Bismarck: A Design and Operational History

Hello everybody, Hi Marcelo, thanks, my questions were related to the fact that Whitley says that the power plants of Scharnhorsts and Bismarcks were the same and that they were working at the same pressure of 58 kg/cm2. Garzke & Dulin mention a different working pressure. I have not found any indic...
by Alberto Virtuani
Tue Jul 30, 2019 4:51 pm
Forum: Bismarck General Discussion
Topic: 3-shaft propulsion
Replies: 115
Views: 2135

Re: Battleship Bismarck: A Design and Operational History

Hello everybody, Marcelo Malara wrote: "Garzke gives 2863 t for Scharnhorst (125000 hp at 52 kg/cm2) and 2756 t for Bismarck (135000 hp at 58 kg/cm2)." What was improved in Bismarck's boilers/machinery vs Scharnhorst's ? Wasn't the Bismarck propulsion plant (including the boilers) basically the same...
by Alberto Virtuani
Mon Jul 29, 2019 5:22 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 73
Views: 3180

Re: Matapan

Hello everybody,
Q.E.D.

not interested anymore to discuss with this guy.
When (I should say "if"...) he will have any evidence (other than his wiki entry) to present, things may change.


Bye, Alberto
by Alberto Virtuani
Wed Jul 24, 2019 4:58 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 73
Views: 3180

Re: Matapan

Hello everybody, good luck to Mr.Wadinga for his relentless search of who said Ambra got damaged. He accused Bragadin, Giorgerini and Bagnasco.... without being able to present any single proof. Then he attacked Bagnasco for having written a splendid book with Cernuschi (a book written before Cernus...
by Alberto Virtuani
Mon Jul 22, 2019 7:18 am
Forum: The Dreadnought Era (1906-1921)
Topic: WW1 battleships
Replies: 27
Views: 4615

Re: WW1 battleships

Hello everybody, the arrangement of the 6" guns in the Russian "Borodino" battleships (as well in the Tsesarevitch ) was actually a great improvement both on box batteries and casamates: they were placed in twin rotating turrets on the weather (the centre turret) or the forecastle (fore and aft turr...
by Alberto Virtuani
Fri Jul 19, 2019 7:23 am
Forum: The Dreadnought Era (1906-1921)
Topic: WW1 battleships
Replies: 27
Views: 4615

Re: WW1 battleships

Hello OpanaPointer, you wrote: "Do we accept that information?" Difficult to say for me. I have never studied in detail the Japanese battleship of the 1904-1905 war, while I have spent some time on the Russian battleships. The info is very detailed and looks credible: the emplacement of the 76 mm (1...
by Alberto Virtuani
Thu Jul 18, 2019 6:29 pm
Forum: The Dreadnought Era (1906-1921)
Topic: WW1 battleships
Replies: 27
Views: 4615

Re: WW1 battleships

Many thanks !

Alberto