South Sentinel Island is about 40 km westward of North Brother and lies on Port Blair- Chennai (Madras) route. The Island is the first land fall which is picked up by the Masters of the vessel from Chennai heading for Port Blair. This Lighthouse was established specifically for these vessels.
South Sentinel Island is an un-inhabited island having almost the level ground. The approach to island is possible only by Lighthouse Tender M.V. Pradeep. The island is surrounded by reefs. There are plentiful of Turtles and robber crabs found on the Island. It has dense forest and coconut growth.
One of the 30 m Aerial mast trestle Towers from False point Lighthouse was transported to this island and erected during 1996-97. An imported ‘Tide land’ (USA) lighting equipment was installed on the tower and was commissioned in to service on 4th April 1997.