GMDSS: Element 7

1. A Do nothing other than wait for a GA+? prompt and then issue the desired command.
2. B Send a "WRU" then a "Here is" when requested to do so by the coast station.
3. C Send the necessary message file and then wait for time and charges.
4. D Wait for the coast station to transmit a menu of possible commands and select the desired action.

Tip: press A-D to answer