An R. & H. Green & Silley Weir mechanical engineer at work in the engine room on board an unknown ship. He is inside the crankcase of a diesel motor and the photographer has taken a close view of two dismantled bearings marked A1 and F1 that the man is working on. Next to it is an item marked "No.1 Aft". The location may be any of the docks in the Port of London or in Falmouth.