(the Ministry of Economic Warfare, British National Films acknowledge with grateful thanks the co-operation of, without whose wholehearted assistance this picture could not have been made)
(the Ministry of Information, British National Films acknowledge with grateful thanks the co-operation of, without whose wholehearted assistance this picture could not have been made)
(the Admiralty, British National Films acknowledge with grateful thanks the co-operation of, without whose wholehearted assistance this picture could not have been made)