On board the Royal Navy frigate Rapid (1942) during the Maritime Air Defence Exercise Highwood which took place in the North Sea and the Norwegian Sea. The photographer is on the starboard side of 01 deck looking forward and to starboard showing the steps up to the open bridge. The frigate Keppel (1954) is steaming away in the distance. She is a member of the 9th Frigate Squadron and her pendant number is F85. The horizon is not level.