Don't need to be an Arm Chair Admiral
, from time of impact at about 12 seconds into the video, the Chiddingfolds continued
astern wake can be seen at the 15 second time until the 42 seconds point [approx 27 seconds after impact]
So whilst we hear the words "Full Ahead" at 2 seconds into the video, initially may suggest a control instrument failure however as no Ahead motion is seen
A questioning point is why no alarm [pending alarm] sounding was made prior to impact?
Derek