Does a boat have to be to be considered a yacht?
Defining a Yacht
While there is no official point at which a boat becomes a yacht, anything over 40-feet in overall length could conceivably be considered a yacht. … A boat is much more likely to be a yacht if it is large in size and has many luxury amenities and entertainment features.
How big can a yacht be without a crew?
With the appropriate boat licenses, you can typically operate a boat up to 75 feet without a crew. However, most yachts need crew for docking, launching, caring for guests, and watching for danger or other boats. Without a crew, an autopilot feature may be crucial to help with keeping you on course.