Nice footage of crowds of British Navy sailors on ship.
Location of events unknown.
World War One era. British Royal Navy. Sailors waving, facing left - this gives impression that they are in some stands watching some event - really; in BG one can see water moving - they are on a moving ship; waving to people on shore or on another ship - probably 1st - at departure. Great shot. A few sailors in FG see camera and smile.
Note: could be watching game or display?