Issuing a MAYDAY Call
If you have a life-threatening emergency, have everyone put on life jackets and issue a MAYDAY call on Channel 16.
Channel 16 is a calling and distress channel only and should not be used for conversation or radio checks. It can be used to make contact with another station (boat), but the communication then should move to a non-emergency channel such as 68 or 69. Penalties exist for misuse of a radio, including improper use of VHF Channel 16.