| How are high seas (HF) radiotelephone communications initially established between a vessel and a public correspondence station? |
| A) The vessel listens for "free signals" and calls the public correspondence station on the NBDP calling channel with the strongest marker signal. |
| B) The vessel calls the public correspondence station on VHF Channel 16, and the two stations then switch to the working channel. |
| C) Public Correspondence Stations operate NBDP only. |
| D) The vessel calls and establishes voice contact with the public correspondence station on a channel that the station is known to monitor, and the two stations then proceed with their business. |
