Alberto Virtuani wrote: ↑
Mon Apr 08, 2019 9:51 am
Dunmunro wrote: "My assessment of 95% output from 0848-0920 is based upon KGV's GAR and it's detailed description of lost salvos...Every lost round is detailed in KGV's GAR"
[commentary deleted WJJ]
We have no solid idea of the KGV "ordered shots" key figure [underlining removed WJJ] to estimate RoF (even, no assumption is possible, except your [*]speculation, [*], of assuming 16" guns had the same RoF as 14" guns [*}).
I hope the forum members will carefully consider the above statement and my response.
I will post a brief summary here of my methodology regarding KGV's output and how it was extracted from KGV's GAR.
Rodney fired 375 rounds and her GAR stated 77% output. Therefore 100% output = 375/.77 = 487 rnds. KGV had 10 guns versus Rodney's 9 and so KGV, if she had the same salvo rate, would have fired 1.11 x 487 = 541 rnds. KGV actually fired 335 rnds so we can estimate that her output was ~62%.
Question: Did KGV and Rodney have similar salvo rates?
A: Yes, they were nearly identical. KGV's peak salvo rate was 1.7 salvos/minute for about 20 minutes (34 salvos when firing with type 284 radar ranging) as was Rodney's during a later part of the action. During the first 32 minutes KGV averaged ~1.5 salvos/minute while Rodney fired ~1.5 salvos/minute for the first 60 minutes.
Q: How do you know how many salvos KGV fired during the first 32 minutes and how many Rodney fired in the first 60 minutes?
A: KGV's GAR states that A turret jammed at 0920 after having fired an average of 23 rnds/gun. This indicates a minimum of 46 salvos ( or 1.44 salvos/minute) , and with allowances for some lost output as per the summary of lost output by cause, in her GAR, indicates a likely 49 salvos fired at 0920 when A turret jammed. 49 salvos/32 minutes = 1.53 salvos/minute. At ~0948, after having fired 92 salvos Rodney's AFCT failed, and and this notation gives the the average salvo rate for the first 60 minutes and it works out to 92 salvos/60 minutes or 1.53 salvos/minute. At 0920, after 33 minutes of firing, Rodney had fired 45 salvos or 1.4 salvos minute. Rodney's salvo rate increased as the range declined.
Q: Did you produce a graphical table showing KGV's output during various stages of the battle?
A: Yes, and I'll show it again here for reference:
Q: Is the above table 100% accurate?
A: It is very accurate at salvo 49 with maybe a +/- 1% variation but after that it becomes progressively more difficult to reconcile exact times with exact salvos.