and spoke a language that sounded " like Polish or Czech" to him.
I don't know about that...
When I was in a restaurant in Germany with Polish female friends we were mistaken for Italians by Germans who were sitting next to us even though we were talking in Polish... Germans don't seem to have a clue about languages o_O Those "sailors" probably might as well be speaking RuSSian or Inuit lol
divers who rented a 15-meter Bavaria C50 yacht
Interesting... That story reminded me of those mysterious "Spanish" divers in Poland...