Portrait of an Officer at Sea with Coastal Map and Binoculars in his Hand; Man's portrait of an officer at sea. He is depicted in half-length; head and face. He has binoculars in his left hand and a map in his right showing a coastline and mouths. Binoculars and map rest on a table behind which the figure stands. He is wearing a thick jacket with folded sleeves. Underneath he wears a cardigan and a high-closing light blouse with elegant sleeves; telescope; marine charts; officer; anonymous historical person portrayed; John Greenwood; 1760; canvas; oil paint (paint); h 81.5 cm x w 63 cm x t 3.5 cm h 90 cm x w 71.5 cm x d 10 cm