yachtsmen = Segler
No, it is a plural noun. One way to use it as an adjective is to make it possessive (yachtsmen's).
yachtsmen yachter sailor
Chre is not a German word
Yachts are in the ocean. Yachtsmen are on many of those yachts.
"mit" is the German word for "with".
The German word for their is "Ihre."
The word FROM in German is von
The German word for he is er.
The word for is in German - " ist "
The German word for "Who" is "Wer".
The German word for when is wenn.
German is not a compound word.