Raymarine Ray54 - Manual (Page 60)

50 Ray54 VHF Radio
5.6 Position Request
With this option you can request GPS position information from any station
capable of responding to this type of call and for which an MMSI number is
known. You can specify the target station either by selecting it from your
MMSI phonebook or by manually entering its MMSI number.
Specifying the Target Vessel
1. Press and release the CALL/MENU key to enter the DSC menu. The
arrow is pointing to INDIVIDUAL.
2. Rotate the CH knob to select POS REQUEST.
3. Push in the CH knob to select POS REQUEST. The Position Request menu
appears.
4. Push the CH knob again to select SEND. Choose the target vessel from the
phonebook.