n. The ability or art of being adept at sailing a yacht
The Century Dictionary and Cyclopedia
n. The art or science of sailing or managing a yacht. Also yachtmanship.
Word Usage
"Henry Burns, noting the style of Mr. Bangs's yachtsmanship, and observing the freshening of the wind, and the fact that the craft was not being worked to windward anywhere near what it would go, slipped astern beside Mr. Bangs."