Beginning of Essay
Ever since early sailors used square sails to help add speed to their oars, the sailboat has become increasingly more complex. The type of construction varied with the availability of materials. Wood was a common material, but was not available in areas like Lake ....

Middle of Essay
.... knew solution needed to be found. Sails became split into smaller units and ships carried more masts. Some ships had as many as seven masts and forty nine sails set at once. Bit by bit, the sails evolved into triangles with moving points and arms that could turn, enabling people to sail upwind. From here we approach today. With computer assisted design and programs that can sail the boats before they are even made, we enter the twentieth century. One must realize that a sailboat may not sail at the wind and certain angles to the wind. This is called the luff zone. The efficiency of a boat in upwind situations can be determined by the angle at which ....