Looking down from an elevated position inside Number 1 Boiler Shop in Chatham Dockyard, showing various items of machinery and high level, hinged walkways.

Looking down from an elevated position inside Number 1 Boiler Shop in Chatham Dockyard, showing various items of machinery and high level, hinged walkways. An oxy-acetylene trolley is in the foreground and a long line of gas bottles is on the floor beyond the centre divide. A vertical format image.