IPA: /ˈjɑːtər/
KK: /ˈjɑːtər/
A person who operates or travels on a yacht, which is a type of boat used for recreation or racing.
The yachter enjoyed a beautiful day sailing on the open sea.
Yachter is derived from "yacht" (from Dutch "jacht", meaning hunt or chase) and "-er" (meaning a person who). A yachter is a person who sails or operates a yacht.
Think of someone who operates a 'yacht' — the '-er' just means a person. A yachter is someone who enjoys sailing or being on a yacht.