Sec.  80.318   Use of alarm signals.

   (a) The radiotelegraph or radiotelephone alarm signal, as appropriate, must
   only be used to announce:

   (1) That a distress call or message is about to follow;

   (2) The transmission of an urgent cyclone warning. In this case the alarm
   signal may only be used by coast stations authorized by the Commission to do
   so; or

   (3) The loss of a person or persons overboard. In this case the alarm signal
   may only be used when the assistance of other ships is required and cannot
   be satisfactorily obtained by the use of the urgency signal only, but the
   alarm signal must not be repeated by other stations. The message must be
   preceded by the urgency signal.

   (b) In cases described in paragraphs (a)(2) and (3) of this section, the
   transmission of the warning or message by radiotelegraphy must not begin
   until two minutes after the end of the radiotelegraph alarm signal.