So far, all the evidence presented on the apparent hit on Hood at the base of her bridge structure has been survivor Bob Tilburn's account which he provide outside of the official inquiry (and he described in his own words in the Imperial War Museum interview).
But I've just discovered that someone else saw it - Yeoman of Signals Tonkin observing through binoculars from the flag deck of HMS Norfolk! He reported to both Boards of Inquiry that Bismarck's second and third salvos hit Hood and one of these caused a hit forward of the forefunnel and caused the structure there to "fall apart" or "fall down".
The time sequence may not be in sync with Tilburn, but we are well aware of how eyewitness recollections can vary... The second Board did not take him too seriously - but then Tilburn had told them nothing about that part of his experience! I just though this was a very interesting bit of corroboration!
Yeoman of Signals CLIFFORD GEORGE TONKIN, D/JX. 140331.
The witness was cautioned in accordance with K.R. Chapter II.
528. Where were you at the time?
I was the yeoman on watch on the Flag Deck with a glass trained on Hood.
529. Were you watching her closely?
Yes, sir.
530. How much of the actual ship could you see?
The upper work.
531. You could not see her hull?
No, sir.
532. Will you tell us what you saw?
I saw Hood fire, I think, two salvoes before there was any reply, I could not be sure from which turrets but I should say the after turrets. Then I saw splashes round her and thought the Bismarck had opened fire. The second salvo from Bismarck hit the Hood, I could actually see she shell going inboard abaft the bridge. The third salvo I saw a small fire about between the mainmast and the after funnel, the fifth salvo fell round and there appeared to be a considerable amount of smoke and I could not be sure of any hits. By this time the small fire had spread only it appeared to be running along the upper deck both ways. The sixth salvo definitely hit and there was a sheet of flame and Hood appeared to fire from one or other of the after turrets but I could not be sure of it. Just before the sheet of flame and almost immediately after that there was a terrific sheet of flame and that shot up and it appeared that practically the whole of the after part of the ship had gone up.
533. Do you mean by that that this terrific sheet of flame rose from the after part of the ship?
Yes, sir.
534. Can you say what colour it was?
(Witness indicated No. 4 on Exhibit 2.) There were black blodges in it.
535. Was there much smoke?
No a lot, sir.
536. What colour?
At the actual time of the flame I could not say, but afterwards very black.
537. You said you saw a shell hit, what did you actually see?
At the back of the bridge just by the funnel it was like a piece of the ship there seemed to fall apart.
538. Did you see a spark?
No, sir.
539. Was that before the foremost funnel?
Yes, sir.
540. How high did this piece of ship go?
It just seemed to fall down, it may possibly have been a bit of the funnel.