During the World War II, Moore became acquainted with the difficulties experienced in getting men from submarines to land and later in his career he devoted much attention to this subject. While in command of the Seventh Submarine Division in Singapore in the mid-60s during the period of confrontation between Malaysia and Indonesia he carried out experiments with the Special Boat Service (SBS) of the Royal Marines Commandos, working closely with a young 2nd lieutenant in that unit called Paddy Ashdown, later to become a British MP and latterly Lord Ashdown. These experiments built on earlier developments that had led to the development of 'Goldfish', which allowed submariners to enter and leave their vessels while submerged. Moore designed a device which he named 'Trongle' that allowed submariners to locate their vessel in the hours of darkness, revolutionising the way the SBS operated.