A Norddeich Radio colleague of mine, today still active as ham radio DL1BHM, had the following experience at Norddeich Radio service:
A German ship close to Cape Town announced a radio link call on short-wave 16 MHz DAJ.
The crew member on board was on his first voyage, came from the Hessian County, and wanted to speak with his wife on the phone. Therefore, this was also absolutely a new experience for the wife ashore. The connection was not very good at the beginning so that my colleague informed the wife ashore that the ship was far away close to Africa.
After the radio call was handled quite well, the happy wife ashore said to her partner on board:
 „... incidentally the black man a moment ago, that spoke an excellent German........ “