Abstract: This file contains papers relating to the planning and construction of marine navigation equipment, namely lighted buoys at the mouth of the Shatt al-Arab waterway in the northern Persian Gulf. The correspondence is mainly between British authorities in the Persian Gulf, The Foreign and Political Department in India and the India Office in London.Physical description: Foliation: the foliation sequence for this description commences at the inside front cover with 1, and terminates at the inside back cover with 173; these numbers are written in pencil, are circled, and are located in the top right corner of the recto side of each folio.