To me this is one of the finest films ever made,some years ago i tried to find out more about the men who acted in the film,not professional actors but veterans of the Merchant service and Royal Navy,one of them a veteran of Jutland,i had no luck, although it is possible some of the younger members of the cast could still be with us.Along comes this dvd complete with a fascinating commentary by Dr Toby Haggith and Pat Jackson who Directed the film-pure gold,i would have paid the purchase price for this alone,it answers a lot of questions i for one would ask,and is very moving to listen to,i wont spoil it but keep in mind these men were ears deep in a horrible war which at the time the film was shot still had some time to run.A film that is a genuine national treasure about national treasures containing footage shot on passage with a wartime convoy,a convoy that lost ships to u boat attack,all shot in colour at no little risk to those involved.