Section 46(53) in The Port Rules for the Port of Bombay
(53)Whenever any vessel within the limits of the Port is in distress or requires assistance from other vessels or from the shore such vessel shall make the following signals:By DayEither :a gun or other explosive signal fire at intervals of about a minute.Or a continuous sounding with any fog signal apparatus.Together with:either the International Code signal of distress indicated by N.C.or the distant signal consisiting of a square flag having either above or below it a ball or anything resembling a ball.By NightEither :a gun or other explosive signal fired at intervals of about a minute. or a continuous sounding with any fog signal apparatus.Together with:either flames on the vessel (as from a burning tar barrel, oil barrel, etc.) or rockets or shells throwing stars of any colour or description, fired one at a time at short intervals.
