Signal & Sea

Protocol Snapshot

Use for grave and imminent danger requiring immediate assistance.

Use for urgent situations affecting a vessel or person without immediate grave danger.

Use for navigational or meteorological safety information.

Distress traffic has absolute priority.
On hearing an unanswered Mayday, respond if you can assist and relay if needed.
Urgency and safety traffic normally move to a working channel after the announcement.
Copy position, nature of hazard, assistance needed, and persons on board.

This prototype is inspired by GMDSS: A User's Handbook (6th edition) and built from current official procedure guidance.

Use it as a revision trainer, not as a substitute for your course notes, approved phraseology sheets, or instructor guidance.

Level

1 / 10

Score

Streak

Progress

1 / 10

Transmit

MAYDAY Own ship in distress

8.4 NM

Own ship

Other vessel

Situation

Question