There are a few points that should have been asked if he had given evidence but he chose the one way by which he could say what he liked, within reason, and not be pulled up on it. namely and Afidavit or legal statement.
1. He claims to have come on deck at five minutes before midnight and seen a large steamer.... a) was he already on watch in which case he is absent from watch or was he due on watch in which case he should be on his way below. 2) Lookouts were required to spen about 15 - 20 minutes in a darkened area before going on watch so that they enchieved night vision - but not Gill apparently. he seems to be special in that he has immediate clear night vision. 3) He seems to have amazing knowledge of signals at sea - or is it what we used to call the 'Barrack Room Lawyer'.
It causes me to wonder what gripe he had against Captain Lord. had he been discilined or something. I can think of no other reason for him giving evidence in this manner, other than the payment he is believed to have recieved from the press.