A sailor or mariner
Yacht
There is no answer it is a mystery,
Sailing
Jesus
A yachtswoman is a woman who is adept at sailing a yacht.
Yacht
A crew
A trimaran is a sailing yacht with three parallel hulls.
A yachtsperson is a man or woman who is adept at sailing a yacht.
Yacht, yawl
A trimaran.
Yachtsmanship is the ability of being adept at sailing a yacht.