Search found 4027 matches

by dunmunro
Fri Sep 10, 2021 8:37 pm
Forum: Ship Models, Plans and Drawings
Topic: Bismarck Action ships in 1/700
Replies: 18
Views: 221

Re: Bismarck Action ships in 1/700

Hi Paul, Yes indeed a superb collection with some very nice modifications to get unusual vessels eg Suffolk with the cut down stern. I might suggest Kentrat's U-74 needs to be included, since he got some periscope glimpses of the British ships shortly after the final battle through mountainous seas...
by dunmunro
Fri Sep 10, 2021 8:02 pm
Forum: Bismarck General Discussion
Topic: 150/152 mm gun turret locations
Replies: 12
Views: 380

Re: 150/152 mm gun turret locations

Reading the comparison between the Bismarck and Richelieu designs the German engineers seemed to be a bit astonished about the configuration and location of the Rich's MA guns, which enabled her to fire a 9 x 152 mm gun broadside with three triple turrets compared to the Bis' 6 x 150 mm with three ...
by dunmunro
Wed Sep 08, 2021 5:36 pm
Forum: Bismarck General Discussion
Topic: Bismarck range
Replies: 33
Views: 630

Re: Bismarck range

Hello Mr. TTT, power actually achieved at official speed trials (the ones you mention) are different between BS and TP, but design was 138,000 hp for 29 knots for both and (large) extra-power reserve should have been the same for both. Boilers too were manufactured by different companies (Blohm &am...
by dunmunro
Sun Sep 05, 2021 4:18 pm
Forum: Bismarck General Discussion
Topic: Bismarck range
Replies: 33
Views: 630

Re: Bismarck range

Interesting, so by the time of her death, Scharnhorst (and Tirpitz) was barely a 30 knot ship. OTH, DOY was probably slower than KGV had been in 1941, too. Perhaps 27 knots? And if Bismarck had survived (s)he would have been able to do just 29 knots? Even the Iowa class seem to have been able to do...
by dunmunro
Sun Sep 05, 2021 11:15 am
Forum: Bismarck General Discussion
Topic: Bismarck range
Replies: 33
Views: 630

Re: Bismarck range

Hello Mr.TTT, undoubtedly Vittorio Veneto and Richelieu trials (1940) were done at light displacement. However, I doubt Tirpitz was still able of 31 knots in 1944 (apart from damages, her hull had been never in dry dock since years). Has anyone the data from any Tirpitz 1944 speed trial (done after...
by dunmunro
Sat Aug 07, 2021 10:52 pm
Forum: Bismarck General Discussion
Topic: Sinking of the Hood- did all the magazines explode?
Replies: 28
Views: 1262

Re: Sinking of the Hood- did all the magazines explode?

Thanks (as always) Wadinga and Bill for your replies. Looking at it from the points that you both have made it would seem that Mr Mearns theories are at best incorrect or perhaps out-rightly misleading. However it is interesting to see how some ships exploded as they rolled over while others did no...
by dunmunro
Sat Jul 31, 2021 10:36 am
Forum: Bismarck General Discussion
Topic: Sinking of the Hood- did all the magazines explode?
Replies: 28
Views: 1262

Re: Sinking of the Hood- did all the magazines explode?

Hi Dunmunro Thanks for your detailed reply, one thing that still puzzles me is that if shells were not designed to go off under a low impact, what caused the explosions when some ships rolled over? It surely couldn't be the cordite as this required something to ignite it, and bearing in mind the nu...
by dunmunro
Thu Jul 29, 2021 5:47 pm
Forum: Bismarck General Discussion
Topic: Sinking of the Hood- did all the magazines explode?
Replies: 28
Views: 1262

Re: Sinking of the Hood- did all the magazines explode?

Thanks (as always) Wadinga and Bill for your replies. Looking at it from the points that you both have made it would seem that Mr Mearns theories are at best incorrect or perhaps out-rightly misleading. However it is interesting to see how some ships exploded as they rolled over while others did no...
by dunmunro
Wed Jul 07, 2021 7:59 pm
Forum: Hypothetical Naval Scenarios
Topic: Graf Spee V Renown
Replies: 4
Views: 841

Re: Graf Spey V Renown

Gentlemen, I have looked back at the Hypothetical threads as far as 2008 but I don't think we have discussed this one before, so perhaps it has not been mentioned. In the 'Atlantic Fleet battles' simulations one scenario has AGS sinking Renown and in another one of our contributors had AGS beating ...
by dunmunro
Wed May 12, 2021 8:33 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

There was nothing ground breaking about Mk37, as the Mk33 had all the same features ..... OD3147 – DEFENSE AGAINST DIVE BOMBERS USING GUN DIRECTORS Mk. XIX, Mk. XXVIII, Mk. XXXIII and MK. XXXVII 14 September 1939 OBJECT 1. The object of this pamphlet is to p[resent the various methods of defense ag...
by dunmunro
Wed May 12, 2021 7:53 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

It not possible to add ~4 tons at the director level (~55ft AWL) and not have it cause serious issues for ship stability. As the BuOrd history makes clear, one of the design goals of Mk37 was to reduce topweight, and this goal was not met. Hi dunmunro, Apparently, Bureau of Ships did not share your...
by dunmunro
Wed May 12, 2021 9:07 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

The Fletcher class was the largest class of destroyers built during WWII. Subsequent classes also used the Mark 37. If it was too heavy for previous classes I think that's actually kind of irrelevant. Hi Steve, The Farragut Class (followed by the pre-war Mahans, Gridleys, Dunlaps, Bagleys, Benhams ...
by dunmunro
Tue May 11, 2021 4:16 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

There was nothing ground breaking about Mk37, as the Mk33 had all the same features ..... OD3147 – DEFENSE AGAINST DIVE BOMBERS USING GUN DIRECTORS Mk. XIX, Mk. XXVIII, Mk. XXXIII and MK. XXXVII 14 September 1939 OBJECT 1. The object of this pamphlet is to p[resent the various methods of defense ag...
by dunmunro
Tue May 11, 2021 4:11 am
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

Please advise where this figure of 127 AA kills has come from in connection with the Battle of Santa Cruz. I am at a bit of a loss to understand why you made this statement: In the first eight months of the war (Dec 1942 through Jul 1942) 1,033 IJNAF aircraft were listed as combat losses, of which ...
by dunmunro
Mon May 10, 2021 5:53 pm
Forum: Naval Weapons
Topic: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12
Replies: 32
Views: 1048

Re: British 4.5"/45 (11.4 cm) vs American 5"/38 (12.7 cm) Mark 12

The Fletcher class was the largest class of destroyers built during WWII. Subsequent classes also used the Mark 37. If it was too heavy for previous classes I think that's actually kind of irrelevant. The weight of Mk37 was very relevant to the classes prior to the Fletcher class, considering that ...