Search found 3641 matches

by dunmunro
Wed Jan 09, 2019 9:54 pm
Forum: Bismarck General Discussion
Topic: Admiralty War Diary, 22-28 May 1941
Replies: 8
Views: 233

Re: Admiralty War Diary, 22-28 May 1941

As promised this is the relevant pages from the AWD for 22-23 May 1941:

http://www.sfu.ca/~dmunro/images/Bismarckops_22_23.pdf
by dunmunro
Tue Jan 08, 2019 4:44 am
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

I've made a new topic in the technology forum regarding the use of type 273 and 284 radar, but it also shows an AFCT in use and target plotting:

viewtopic.php?f=13&p=81822#p81822
by dunmunro
Tue Jan 08, 2019 4:40 am
Forum: Naval Technology
Topic: OPERATIONAL USE OF TYPE NOS 273M AND 284M (4) IN A CRUISER
Replies: 1
Views: 139

OPERATIONAL USE OF TYPE NOS 273M AND 284M (4) IN A CRUISER

This is a RN training film showing the use of Type 273 and 284 for WS and GS: https://www.iwm.org.uk/collections/item/object/1060020035 The 4 part video shows the sequence of events from initial detection to blind firing using Type 273 and/or 284. The 2nd part of the film is mislabeled and you have ...
by dunmunro
Sat Dec 29, 2018 7:13 pm
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Hello everybody, @ Wadinga, on December 2nd, 2018 I have posted : http://www.kbismarck.org/forum/viewtopic.php?f=1&t=8335&start=165#p81496 The bearing communicated at 05:44 from PoW was 335° T and not 325° T as you can read on the posted original messages. Initial_bearings_BC1_to_German_squadron.jp...
by dunmunro
Sat Dec 29, 2018 8:23 am
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Just an FYI for everyone, especially Bill Jurens, who may have missed it. This data is extracted from the Admiralty War Diary and the two files contain all the relevant RN radio transmissions from May 22/23 onward: http://www.sfu.ca/~dmunro/images/Bismarckops.pdf http://www.sfu.ca/~dmunro/images/Bi...
by dunmunro
Thu Dec 27, 2018 9:13 pm
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Just an FYI for everyone, especially Bill Jurens, who may have missed it. This data is extracted from the Admiralty War Diary and the two files contain all the relevant RN radio transmissions from May 22/23 onward: http://www.sfu.ca/~dmunro/images/Bismarckops.pdf http://www.sfu.ca/~dmunro/images/Bis...
by dunmunro
Sun Dec 23, 2018 8:49 pm
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

We know that Brooke had to be viewing Bismarck because his director never shifted targets, and apparently never did the forward DCT because both directors were slaved to the same bearing. The field of view in Brooke's optics was very small and he couldn't see Prinz Eugen during the action.
by dunmunro
Wed Nov 28, 2018 9:53 am
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Wadinga wrote: "If Rowell had said the fire-control instrument was synchronized, it would be different, but he specifically wants the enquiry to realise the times may be wrong in absolute (chronometer) terms. " Luckily, despite Rowell cautious (and diplomatic) disclaimer, we do have Leach's own ope...
by dunmunro
Sun Nov 25, 2018 10:35 pm
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Hello everybody, do not even try to tell me that Suffolk did not have the 1 degree accuracy on the bearings. It is enough to read her reports : 0447 (B). Enemy bore 186°, 15 miles, course 220°, speed 27-28 knots and bore 196° at 0456 (B). 0520 (B). Enemy bore 203°, 15 miles, possibly increasing spe...
by dunmunro
Sun Nov 25, 2018 5:51 pm
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Hello everybody, since we will be mainly covering distances and mostly the relative bearings taken visually, ... below the 16 sea miles close to the horizon line, ... starting from the smoke and after looking at the enemy warships, ... I think it is wise to see the real situation on board being use...
by dunmunro
Sat Nov 24, 2018 3:14 am
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

This would seem to be a good start. Does any other correspondent wish to either add a document or for whatever reasons -- which should be specified -- have one of these documents removed? Bill Jurens Yes: http://www.hmshood.org.uk/reference/official/adm234/adm234-509suff.htm and Leach's narrative a...
by dunmunro
Wed Nov 21, 2018 11:25 pm
Forum: Hypothetical Naval Scenarios
Topic: Richelieu and Jean Bart
Replies: 49
Views: 5738

Re: Richelieu and Jean Bart

Unfortunately I've never seen long range data of dispersion for any of the ships - only that the British noted VV's dispersion to be particularly bad at Gaudo, while the same observations were not present in regards to her long-range shooting at Capo Teulada/Spartivento, or Littorio 's fire at eith...
by dunmunro
Thu Nov 08, 2018 7:38 am
Forum: Bismarck General Discussion
Topic: Bismarck at DS after the second turn
Replies: 367
Views: 22935

Re: Bismarck at DS after the second turn

Hello everybody, Wadinga wrote: "Bismarck opened fire half a minute after the Prince of Wales, before doing so turning to open her "A" arcs. " I will respect Mr.Jurens request and avoid to say what I have in mind about Mr.Wadinga, who is evidently not respecting Mr.Jurens request in his above post....
by dunmunro
Thu Nov 08, 2018 7:35 am
Forum: Naval Technology
Topic: 'Superior' German & Japanese Optics & Rangefinders
Replies: 8
Views: 2460

Re: 'Superior' German & Japanese Optics & Rangefinders

"the battleship Littorio, while able to target the Caio Duilio with her rangefinders previously, this became impossible when the other battleship turned on her searchlights and blinded the Littorio. However, use of 'Zeiss-Septar' polarizing filters made it possible to target the other battleship wi...
by dunmunro
Thu Nov 08, 2018 7:24 am
Forum: The Wreck of the Bismarck
Topic: HMS Mashona
Replies: 1
Views: 1718

Re: HMS Mashona

Here's the crest:

Image

Tribal Class Destroyers (source of the above) states that the motto was indeed 'Chisarayi' but states it translated as "stay in peace".