A port side view, taken from ahead of the beam, of the Royal Fleet Auxiliary oiler Wave Ruler (1946) just under way coming to anchor. She has a black hull, grey upperworks and a two gantries, one forward and one amidships. The location and date of this image are unknown. Emil Edward Sigwart was master of this ship from 16 May to 16 August 1950. A copy negative of a Crown copyright photographic print.