Search found 421 matches

by hans zurbriggen
Wed Oct 04, 2023 7:44 am
Forum: Bismarck General Discussion
Topic: How close was the final battle?
Replies: 256
Views: 2216749

Re: How close was the final battle?

Hi Byron, thanks for posting transcript of the 16" narrative. I now realize that there are large discrepancies between this narrative and Rodney's Salvo Plot from the T.S. (Enclosure N.1 to 456/G). E.g., in this latter, salvo 21 did not straddle (22 did) and no further straddle has been highlig...
by hans zurbriggen
Tue Oct 03, 2023 10:22 am
Forum: Bismarck General Discussion
Topic: How close was the final battle?
Replies: 256
Views: 2216749

Re: How close was the final battle?

Hello Byron, consistent straddling between salvo 18 and 22 (4 out of 5 consecutive salvoes straddling in 3 minutes from 09:00 till 09:03, while ship was sailing a straight course 85°) are IMHO good sign of quite accurate firing solution. However, just after that, no straddle was noticed anymore unti...
by hans zurbriggen
Mon Oct 02, 2023 7:22 am
Forum: Bismarck General Discussion
Topic: How close was the final battle?
Replies: 256
Views: 2216749

Re: How close was the final battle?

Hello Mr. Angel, thanks for this very interesting analysis. Your friend writes: "...By 0900 the enemy’s fire which had been at the rate of 1 - 1.5 salvos per minute..." It may look as a slow RoF for Bismarck, but IMHO we have to keep in mind that only A and B turret were bearing (in additi...
by hans zurbriggen
Sun Oct 01, 2023 7:46 am
Forum: Bismarck General Discussion
Topic: How close was the final battle?
Replies: 256
Views: 2216749

Re: How close was the final battle?

Hello Mr. Crandell, you write: "I have assumed that Bismarck's average rate of fire through the engagement of about one round per minute was related to the turn. If not so, then why? " Bismarck's salvoes sequence is highly uncertain, due to loss of her GAR. What we know is that she fired 9...
by hans zurbriggen
Sat Sep 30, 2023 7:07 am
Forum: Bismarck General Discussion
Topic: How close was the final battle?
Replies: 256
Views: 2216749

Re: How close was the final battle?

Hello Mr. Crandell, you write: "Then why did Bismarck stop firing when she had to maneuver to avoid the phantom torpedoes reported by Prinz Eugen?" Bismarck stopping fire is highly unlikely. We don't have any image for Bismarck turning to starboard to 'avoid torpedoes', but we have PG film...
by hans zurbriggen
Fri Sep 29, 2023 6:00 pm
Forum: Naval Technology
Topic: Photo of FuMO 26 Presentation Console
Replies: 11
Views: 2144

Re: Photo of FuMO 26 Presentation Console

Hi Marcelo (If I may), you are right of course: a circular screen is not necessarily a PPI, but I remember I had read about 2 to 3 linear displays for GEMA radars and last photo from Mr. fsimon seems to confirm that. Hi Frank, it looks same installation. Thanks for all info and supporting images. On...
by hans zurbriggen
Fri Sep 29, 2023 2:47 pm
Forum: Naval Technology
Topic: Photo of FuMO 26 Presentation Console
Replies: 11
Views: 2144

Re: Photo of FuMO 26 Presentation Console

Hello Frank,
thanks, can you confirm "my" image is related to a FuMG 40 generation radar or would it be more likely a FuMG 39 ?

hans
by hans zurbriggen
Fri Sep 29, 2023 6:58 am
Forum: Naval Technology
Topic: Photo of FuMO 26 Presentation Console
Replies: 11
Views: 2144

Re: Photo of FuMO 26 Presentation Console

Hello Mr. Malara,
thanks, however, I had read that GEMA radars were not equipped with a circular (PPI like) presentation screen but with 2 or 3 linear indicators (for range, bearing and fine bearing) but I may be wrong.

hans
by hans zurbriggen
Thu Sep 28, 2023 5:16 pm
Forum: Naval Technology
Topic: Photo of FuMO 26 Presentation Console
Replies: 11
Views: 2144

Photo of FuMO 26 Presentation Console

Hello all, I have got from a friend of mine this image. He says it contains the FuMO 26 presentation console where operator could read data coming from the radar. Is anyone able to confirm and to show me "presentation" panel(s) and other equipment ? Does anybody know where this console was...
by hans zurbriggen
Tue Sep 19, 2023 2:16 pm
Forum: Bismarck General Discussion
Topic: Gun precision / dispersion
Replies: 129
Views: 70248

Re: Gun precision / dispersion

Hello Frank, what I have found in H. von Kroge book for early 1940 (chapter 15, before introduction of TS6 and with 2000 Hz PRF) says: Even though the higher accuracy of the Messkette had not found complete acceptance with the Navy and Luftwaffe, their ease of operation, and above all their resoluti...
by hans zurbriggen
Sun Sep 17, 2023 8:08 pm
Forum: Bismarck General Discussion
Topic: Frederick Dalrymple-Hamilton report.
Replies: 13
Views: 5829

Re: Frederick Dalrymple-Hamilton report.

Hello, therefore, KGV 284 did mix her salvoes fall of shots with Rodney's and range was estimated incorrectly constant (while rapidly decreasing) at 25,000 yards from 08:49 till 08:53, except very first 2 salvoes (fired at 08:48) (thanks for this very important correction). However, KGV was unable t...
by hans zurbriggen
Sun Sep 17, 2023 8:33 am
Forum: Bismarck General Discussion
Topic: Frederick Dalrymple-Hamilton report.
Replies: 13
Views: 5829

Re: Frederick Dalrymple-Hamilton report.

Hello,

KGV 284 did mix her salvoes fall of shots with Rodney's and range was estimated constant (while rapidly decreasing) at 25,000 yards (see KGV GAR, Gunnery Control, point 2).
KGV Gunnery Control.jpg
KGV Gunnery Control.jpg (56.42 KiB) Viewed 4055 times


Norfolk did not observe any hit before 09:04.
Adm.WW report.jpg
Adm.WW report.jpg (59.02 KiB) Viewed 4055 times

hans
by hans zurbriggen
Sun Sep 17, 2023 7:17 am
Forum: Bismarck General Discussion
Topic: Frederick Dalrymple-Hamilton report.
Replies: 13
Views: 5829

Re: Frederick Dalrymple-Hamilton report.

Hello, unluckily there is no consistent account/reconstruction of May 27 engagement yet: - according to Rodney, they observed a straddle at 3rd salvo (22,500 yards), but, when first range came from rangefinder, they realized they were 2,500 yards short and had to correct; - according to KGV, 284 rad...
by hans zurbriggen
Fri Sep 15, 2023 7:20 am
Forum: Hypothetical Naval Scenarios
Topic: Prince of Wales in front
Replies: 32
Views: 9309

Re: Prince of Wales in front

Hello Mr. lwd, Lütjens re-assigned target for Prinz Eugen at 05:55, having already correctly identified Hood. Bismarck would have fired 5 salvoes against Hood by the same time of Hood explosion even with Hood behind PoW: no statistical change. But you are right, the turn might have affected Hood vul...
by hans zurbriggen
Thu Sep 14, 2023 9:13 am
Forum: Bismarck General Discussion
Topic: Gun precision / dispersion
Replies: 129
Views: 70248

Re: Gun precision / dispersion

Hello Mr. fsimon,
antenna visible (https://www.kbismarck.org/forum/downloa ... hp?id=4120) on Tirpitz mast looks like a 'Palau'.
Hohentwiel radar often used Palau antenna. Did Sophie use same antenna too ?

hans