Bodie.. Hope you are circumspect with other bon mots your "good authority" may proffer!!
The distress call by radio telephone is the two words "MAY DAY." This corresponds to the French pronunciation for "m'aider", which means "help me." On voice, the "XXX" (urgent) equivalent is the word "PAN." This corresponds to the French pronunciation for "panne", which means "mishap" or "accident." The "TTT" (safety) equivalent is "SECURITY." This corresponds to the French pronunciation for "sécurité", which means "safety." The calling frequency for voice was 2182 kilohertz.
Thought I'd get that in before Cornish Jack did