A distant starboard side view, taken from abaft the beam, of the Gravesend - Tilbury ferry Gertrude (1906) crossing Gravesend Reach, River Thames. The photographer is on board an excursion vessel looking downstream. In the foreground is an unidentified spritsail topsail barge, seen from off her starboard bow, sailing upriver in ballast. She has a staysail, mainsail and topsail set. Her mizzen sail is furled. Denton is on the right.