Swedish submarine at Dover.
Item title reads: "Item title reads: "Sweden's Largest Submarines. Pay official visit during voyage from manoeuvres to home waters"
M/S submarine steams passed camera with some crew members on deck. Various shots of the submarine, and a sailor signals with a flag, in semaphore, from the top of the conning tower. C/U of sailors waving to camera, whilst standing in the conning tower.
Note: The sailors smile and wave - but the shape of the conning tower makes it look as if they are in an old fashioned mincer.