Section 69(5) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(5)Whenever a ship shall take up her berth, or get under way, if there be sufficient light for the ensign to be seen, it shall be hoisted, though earlier or later than aforesaid; also on her passing, meeting, joining, or parting from, any other of Indian Naval Ships, and also, unless there should be sufficient reason to the contrary, on her falling in with any other ship or ships at sea, or when in sight of, and near, the land, and especially when passing or approaching forts, batteries signal or coastguard stations, light houses, or towns.
