Section 87(a) in The Andaman and Nicobar Islands Port Rules, 2004
(a)Every harbour cart whether at anchor or underway shall between sunset to sunrise exhibit at a height of atleast 1.83 meters above the deck a white light in a weather proof lantern so constructed as to give an uniform and unbroken light of sufficient power to be visible all around the horizon for distance of atleast one nautical mile.
