Hi Mr.Cag,
I realize that my table is not so easy to interpret, starting form the fact that I forgot to post the name of the ship for each row......
Here a better (I hope) version:
- PoW_vs_Bismarck_firing-1.jpg (34.01 KiB) Viewed 489 times
I used the
PoW official GAR table (see here:
http://www.hmshood.org.uk/reference/off ... 09guns.htm ref.
[Enclosure (I)] SUMMARY OF FORMS S.1146 (f)) and I tried first of all to understand all the
PoW GAR definitions and how they calculated the different figures.
Apart from the battle duration in seconds and the figures we already discussed and mostly agreed (actual shells, salvos, guns ordered to fire), the first and most "tricky" figure is the "
Salvos per minute": when I tried to divide 18 / 538 * 60 to get the same result as the PoW GAR, I got 2,0074 and not 1,8959....
This took me a while to understand, but then I realized that the formula correctly starts calculation at the 2nd salvo (thus taking into account for the first loading time). Then I tried 17 salvos (to eliminate the first shot that is already loaded) and I got 17 / 538 * 60 = 1,8959
Once understood this, I did the same for Bismarck (always assuming that she was firing using the same methodology, of course), so the semi-salvos used for the calculation for BS are 25 and not 26 (assuming 13 full salvos were ordered in BS...).
Then I had to understand what is "
E.F.G. salvos per minute" and I realized that this is just the 25,68% of the previous value , that is the salvo rate per minute once taken into account the loss of output (=shells fired/guns ordered to fire).
Last column is mine (it's not in the official GAR) and it is just the E.F.G. salvos per minute multiplied by the number of guns firing a "perfect" (semi-)salvo (as E.F.G. is already taking into account the output loss): 5 for PoW and 4 for Bismarck. This is giving us the "effective" number of shells fired per minute,
assuming all turrets could fire (not wooded).
I hope this last point answers Sean (Wadinga) post as well, as he (correctly) just calculated the average number of shells per minute (55 / 9) getting 6.1 that is the actual average output, obviously less than 7,04, as PoW was firing with her fore turrets only for a while during the battle.
However this 6,1 figure cannot be used to compare to Bismarck in any way, as BS was always firing all turrets. The last column can be used to compare apples with apples.... getting the to result that
PoW rate of fire was better than BS in terms of effective shells fired per minute with all turrets bearing.....
I hope now it is more clear......
Bye, Alberto
"It takes three years to build a ship; it takes three centuries to build a tradition" (Adm.A.B.Cunningham)