This is the 4th volume (volume D) in the British Admiralty List of Lights and Fog Signals series, covering the Eastern Atlantic Ocean, Western Indian Ocean and Arabian Sea, from Goulet de Brest Southward, including off-lying Islands, to longitude 68° East. It is amended up to and including Admiralty Notices to Mariners Weekly Edition 31/11.
The ALL are 11 volumes providing a comprehensive listing of all lighthouses, lightships, lit floating marks (over 8 m in height), fog signals and lights of navigational significance. Each publication lists the characteristics of lights and fog signals, together with the equivalent foreign language light descriptions.
Also included are tables which can be used to calculate the geographical and luminous ranges of lights. Details for all lights listed include: