"An Officer using a Sextant" image: a sketch study of a Royal Navy officer using a sextant. In the centre of the composition an officer is shown wearing a waterproof coat and cap, placing the sextant to his right eye. To the right is a depiction of the same man in the same position, but focused on his head, upper body and right arm. Underneath these sketches is a small outline cartoon of a composition of several naval officers standing on a ship's bridge.