1. The following signals, used or exhibited either together or separately, indicate distress and need of assistance:
(a) a gun or other explosive signal fired at intervals of about a minute; (b) a continuous sounding with any fog signalling apparatus; (c) rockets or shells, throwing red stars fired one at a time at short intervals; (d) a signal made by any signalling method consisting of the group . . . - - - . . . (SOS) in the Morse Code; (e) a signal sent by radiotelephony consisting of the spoken word "MAYDAY"; (f) the International Code Signal of distress indicated by N.C.; (g) a signal consisting of a square flag having above or below it a ball or anything resembling a ball; (h) flames on the vessel (as from a burning tar barrel, oil barrel, etc.); (i) a rocket parachute flare or hand flare showing a red light; (j) a smoke signal giving off orange-coloured smoke; (k) slowly and repeatedly raising and lowering arms outstretched to each side; (l) a distress alert by means of digital ...
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