Beam means the width of the boat. Beam is usually measured from the widest part of the boat (Usually near the bow area. <br /><br />It vary's if 6ft. is good. For instance, Midnight Lace was designed so that a narrow beam would increase speed and fuel consumption. (Ex: 52ft. with a 13ft. beam). Some boats are made special by being narrow. Which is good!<br /><br />JAZZ