A starboard side view, taken from abaft the beam, of the staysail spritsail mulie barge Jock (1908) under sail during a race in the Thames Estuary. She is sailing goose-winged with her mainsail and topsail to port and her striped staysail poled out to starboard. Her ketch mizzen is set slightly to port. Her boat is suspended at a very steep angle from her davits. A vertical format negative.