The maximum number of people allowed is specified in the description of each yacht. Generally, yachts under 40 feet can accommodate 8 to 10 people, yachts between 40 and 70 feet can accommodate a maximum of 15 people, and yachts between 71 and 127 feet can vary from 20 to 30 people depending on the vessel. Some large luxury yachts only allow 12 people.