Design for the Prong lighthouse, Bombay, India, February 1867.
© Science Museum / Science & Society Picture Library
Scale drawing from the Gibb Collection made in Westminster, London, showing a cross-section of the lighthouse viewed from the south-west. The lighthouse was built to coincide with the development of reclaimed land in Colaba to the south of the city, which included the construction of a railway terminus and the Sassoon Docks in 1875. The lighthouse protected the approach to the docks and Bombay's harbour.