MAYDAY & Distress Procedures Flashcards

What is the purpose of a NAVTEX receiver on board a vessel?

Answer: To receive automated navigational and weather warnings broadcast by coast stations

NAVTEX is an automated system for broadcasting navigational warnings, weather forecasts, and SAR information on 518 kHz (or 490 kHz for national language broadcasts) to vessels within range of coast transmitters.

In UK waters, which radio watch is mandatory on recreational vessels?

Answer: A continuous listening watch on Channel 16 when underway

While MCA regulations strongly recommend maintaining a continuous watch on Channel 16 when underway, vessels fitted with DSC are also required to maintain a watch on Channel 70. In practice, Channel 16 watch is the primary requirement.

What is the phonetic alphabet word for the letter 'S'?

Answer: Sierra

In the NATO phonetic alphabet, the letter S is represented by 'Sierra'. The phonetic alphabet was designed so each word sounds distinctly different from all others to prevent confusion in poor radio conditions.

When transmitting a MAYDAY, how should numbers be spoken?

Answer: Digit by digit (e.g., 'five zero' for 50)

In radio communications, numbers are spoken digit by digit to avoid confusion (e.g., 50 is spoken as 'five zero', not 'fifty'). This prevents misunderstandings caused by accent or poor audio quality.

What does 'OVER' mean at the end of a radio transmission?

Answer: I have finished transmitting and am awaiting your reply

'OVER' at the end of a transmission means the sender has finished speaking and is inviting the other party to respond. It indicates the radio is now in receive mode waiting for a reply.

What does 'OUT' mean at the end of a radio transmission?

Answer: The conversation is ended and no reply is expected

'OUT' at the end of a radio transmission means the conversation is complete and no reply is expected. It is used to close communications. 'OVER AND OUT' is incorrect radio procedure — use either OVER or OUT, not both.