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by Dave Saxton
Mon Jun 17, 2019 3:42 am
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 15
Views: 445

Re: Matapan

Yes, the chronology given by me above does need some correction. It was on the 27th, or X-1, that the second message, a long message, and the fatal, message was received. The source for this is Mavis Batey herself, as she wrote in her book: https://books.google.com/books/about/Dilly.html?id=V7utQAAA...
by Dave Saxton
Thu Jun 13, 2019 2:36 pm
Forum: World War II
Topic: Britain Sues for Peace 1940.
Replies: 9
Views: 134

Re: Britain Sues for Peace 1940.

Hitler was always looking east. Now with his hubris unchecked he strikes east. Perhaps he prevails. A new Dark Ages commences.
by Dave Saxton
Wed Jun 12, 2019 9:55 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 15
Views: 445

Re: Matapan

The information was quickly transferred to Cunningham at Alexandria. Cunningham sent the flying boat and planned to sail just after dark. He went ashore for a round of golf, knowing the Japanese consul would be at the golf course. He also knew that the Japanese consul would inform the Italians that ...
by Dave Saxton
Wed Jun 12, 2019 9:50 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 15
Views: 445

Re: Matapan

The British cryptanalysts began to try and construct cribs under the assumption that the addressee of the message would be given with the phrase: “ per (the name of the addressee)”. A 19 years old linguist by the name of Mavis Lever discovered that the Italians were no longer using that phrase in th...
by Dave Saxton
Wed Jun 12, 2019 9:42 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 15
Views: 445

Re: Matapan

Winterbotham got some details wrong in his description of how Ultra set up Matapan. Winterbotham implied that it was the German Luftwaffe Enigma that revealed the plans to the British. Iachino did not send any naval messages prior to Matapan but had arranged the operation by giving all orders via la...
by Dave Saxton
Wed Jun 12, 2019 9:38 pm
Forum: Naval History (1922-1945)
Topic: Matapan
Replies: 15
Views: 445

Re: Matapan

Matapan was a decisive battle. It determined the fate of the RM in the Med. This battle was brought about almost entirely through Ultra Intel. Following the rules of using Ultra, they had to set up a plausible explanation to enemy analysis as to how they obtained the necessary Intel beforehand. Ther...
by Dave Saxton
Tue May 21, 2019 2:07 pm
Forum: Bismarck General Discussion
Topic: Message Traffic heard by RODNEY 24 May 1941
Replies: 251
Views: 5462

Re: Message Traffic heard by RODNEY 24 May 1941

FWIW, I have records, from USN target practices, of quite a few first salvo straddles on targets at ranges well over 20,000 yards, even before WWII. So such an occurrence, while unusual, was by no means unknown, especially if the first salvo pattern was fairly large. Bill Jurens I don't discount th...
by Dave Saxton
Mon May 13, 2019 12:05 am
Forum: Naval Technology
Topic: Deep load
Replies: 3
Views: 153

Re: Deep load

Treaty limits are standard displacement not deep load or full load displacement. Standard Displacement as defined by the Washington Treaty was the ship fully stored and ammunitioned, but excluding fuels, boiler feed water, and lubricating oils. During wartime the KGVs would have gained displacement,...
by Dave Saxton
Mon May 06, 2019 8:03 pm
Forum: Bismarck General Discussion
Topic: British postwar tests on armor
Replies: 82
Views: 1833

Re: British postwar tests on armor

Tirpitz was in Kaa Fjord during the Sept 15th attack when the bow was wrecked. It then was transferred to Tromso. Kaa Fjord is deep. About 40 meters deep. The Tromso anchorage was not deep. It was thought there would only be about 1.5 meters between the keel and the sea bed at the selected anchorage...
by Dave Saxton
Sun May 05, 2019 10:19 pm
Forum: Bismarck General Discussion
Topic: British postwar tests on armor
Replies: 82
Views: 1833

Re: British postwar tests on armor

Gentlemen, Did any of the 'Tallboys that hit Tirpitz go right through the ship and out of the bottom? I looked up Brown: The hit scored on Sept 15 passed through the flare of the bow and out the side before bursting about 15 meters below the bottom of the bows as a gigantic mine. There were no hits...
by Dave Saxton
Sat May 04, 2019 3:19 pm
Forum: Bismarck General Discussion
Topic: Some questions regarding Bismarck's armor scheme
Replies: 17
Views: 693

Re: Some questions regarding Bismarck's armor scheme

When we consider the types of surface warfare actually fought by battleships during WW2 the Bismarck's armour scheme looks to be a pretty good design.
by Dave Saxton
Sat May 04, 2019 3:09 pm
Forum: Bismarck General Discussion
Topic: Some questions regarding Bismarck's armor scheme
Replies: 17
Views: 693

Re: Some questions regarding Bismarck's armor scheme

Dave, thanks for the answers. So it seems the Germans surmised that after the thicker deck armor claims its share main belt armor cannot be made thick enough to offer good enough protection. Correct? Did other navies arrive at different conclusion or did they arrive at same conclusion but did not t...
by Dave Saxton
Fri May 03, 2019 2:59 pm
Forum: Bismarck General Discussion
Topic: Some questions regarding Bismarck's armor scheme
Replies: 17
Views: 693

Re: Some questions regarding Bismarck's armor scheme

Thorsten has covered the important technical points, just some comments on some of the questions based on primary documents reading: The Papers of Kurt Assman: The OKM specifications issued demanded an Immunity Zone of at least of 20,000 meters to 30,000 meters battle range. The comments in the intr...
by Dave Saxton
Mon Apr 29, 2019 2:45 pm
Forum: Bismarck General Discussion
Topic: British postwar tests on armor
Replies: 82
Views: 1833

Re: British postwar tests on armor

In my own head I think it would depend on the angle of fall of the shell,it’s velocity and weight. I assume that it harder for the shell than the bomb. In my own head - just as tanks have sloped armour to increase the thickness of plate a shell firing on a flat trajectory, an armoured deck means th...