Module 10 - Scenario Simulator
Virtual Station Replies
What you will learn
Use a simulated station reply as corrective evidence without mistaking it for universal real-world wording.
A radio exchange is a sequence of turns. The reply may acknowledge, request missing information, change channel or tell you to keep listening.
When the phrase sequence matches the authored call, the simulator plays the scenario's expected reply. When it does not, a conservative correction may ask for the called station, vessel identity, position, problem, request or correct priority signal. The correction identifies the next repair; it does not prove that every real coast station would use exactly those words.
Listen before transmitting again. A reply ending in OVER invites the named station to respond; OUT closes that exchange. A working-channel instruction changes where the conversation continues. A received Mayday or safety instruction may require listening watch rather than another immediate speech turn.
In live voice role-play, correctly recognised details can be retained across a retry unless the change makes the earlier information unsafe or contradictory. Read the recognised and missing lists, then decide whether the station asked for one detail or whether the complete transmission must restart.
Worked example
A marina call includes the vessel name and berth request but omits the vessel's position. The station asks, 'What is your position? Over.'
- 1Read the reply as a request for one operationally useful missing fact, not as a new generic call.
- 2Give the position stated in the scenario and finish with OVER because a further instruction is expected.
- 3Listen for the berth or holding instruction and read back safety-critical detail when the scenario requires it.
Sense check: Adding an invented position would make the call look complete while making the exercise operationally false.
Let the reply control the next turn
A coast station acknowledges a distress message and asks what lifesaving appliances are carried.
1. Keep listening
Do not replay the entire opening over the station's question.
2. Answer the question
Use only the equipment facts supplied by the scenario.
3. Preserve the watch
Finish appropriately and remain on the instructed channel.
Sense check: A memorised first call is not a complete exchange unless the operator can hear and act on the next instruction.
Common mistake or limitation
- Transmitting again before listening to the station reply.
- Assuming every correction requires the entire call to restart.
- Presenting authored training replies as exact wording used by every station.
Recap
- The reply is part of the procedure, not a reward animation.
- OVER, OUT and channel instructions control the next turn.
- Repair the requested detail without inventing facts.
Optional quick check
Section 2 of 8
The station asks for your position and ends with OVER. What should you do?
Sources and factual review
Reviewed 20 August 2026 - Compass Revision editorial review.
Continue studying Scenario Simulator
This public lesson is part of Revision Module 10. Full revision access adds the guided Learn, Practise and Test flow, flashcards and revision progress.