Section 46(52) in The Port Rules for the Port of Bombay
(52)Whenever a fire occurs on board any vessel within the limits of the Port, such vessel shall immediately hoist by day the two flag signals D.Q. of the International Code, and by night two red lights in a vertical line one over the other not less than 6 feet apart where they can best be seen from the Port Signal Station, at the same time sending D.Q. by Morse flashing lamp to the Port Signal Station.
