Once again Brooke is misquoted
"Latterly" at night he says ie not seven weeks of nights. And seven weeks is not seven months.but never 7 weeks gunnery practice "night and day".
So Y turret was not available for any "terrific Gunnery practice" until one month before Denmark StraitsApril 1941
1st to 26th - The PRINCE OF WALES was at Scapa Flow carrying out working up exercises. Gunnery exercises were severely curtailed due to the continuing problems with the quadruple 14in turrets. The work up included checking radar performance and the calibration of air warning and fire control equipment.
27th - It was on this day that the last of her three turrets was accepted from Vickers Armstrong and practice drills with all her armament could commence.
Guess who posted this- Antonio BonomiMay 1941
8th - Carried out Full Power Trials.
21st - Ship reported to CinC Home Fleet as ready for Fleet service.
(The PRINCE OF WALES had had less than two months working up, which was completely inadequate considering all the new systems and the fact that 80% of her crew were Hostilities Only and had never been on a ship before. Further she still had major problems with her main armament and 100 Vickers Armstrong staff were embarked attempting to fix the problems. The BISMARCK in contrast had worked up over a period of five months and was fully operational and efficient)
And also we had
Here is Lindemann again from the KTB 28th April one day after PoW actually got Y turret working:
"Ship is personnel-wise and material-wise fully ready for action, and provisioned for 3 months. Herewith, the first chapter in the ship's life since the commissioning 24th August 1940, is successfully completed. The goal was reached after 8 months, being over the target date by only 14 days."
I can't be bothered to type any more but visit the KTB for the full details of just how ready Bismarck was. Totally. And then they had a further month of training. In high tech vessels like state of the art warships there are bits and pieces that need sorting. That is normal and a continous process.
Only a statistician without comprehension would think it is as easy to hit at 27,000yds with no rangefinder as at 15,000yds, but the commentator was a gunnery officer not a statistician.4 in total instead of 3... statistically...
All the best