Sec.  80.312   Priority of distress transmissions.

   The distress call has absolute priority over all other transmissions. All
   stations which hear it must immediately cease any transmission capable of
   interfering with the distress traffic and must continue to listen on the
   frequency used for the emission of the distress call. This call must not be
   addressed to a particular station. Acknowledgement of receipt must not be
   given before the distress message which follows it is sent.