The sea breaking over the edge of a quay with a lighthouse in the distance. This is probably a recognisable location to someone, so if you know where it is please let me know in the comments.
Since this was taken on 120 format film I'm going to assume it was probably taken sometime in the 1950s or 1960s.
Update: David, in the comment below has identified the location as Whitby in North Yorkshire and the date as earlier than 1959 - thanks very much David!