Yacht Design Features And Specifications:

These yachts are generally make 25 meters (82 ft) or longer, although the largest sailing yacht available for charter is 90 meters (295 ft).
In recent years, these yachts have evolved from fairly simple vessels with basic accommodation into sophisticated and luxurious boats. This is largely due to reduced hull-building costs brought about by the introduction of fiberglass, and increased automation and “production line” techniques for yacht building.
On the biggest, 40 m (130 ft)-plus luxury yachts, every modern convenience, from air conditioning to television, is found. Sailing yachts of this size are often highly automated with, for example, computer-controlled electric winches controlling the sails. Such complexity requires dedicated power-generation systems. In recent years the amount of electric equipment used on yachts has increased greatly. Even 20 years ago, it was not common for a 7 m (23 ft) yacht to have electric lighting. Now all but the smallest, most basic yachts have electric lighting, radio, and navigation aids such as Global Positioning Systems. Yachts around 10 meters (33 ft) bring in comforts such as hot water, pressurized water systems, and refrigerators. Aids such as radar, echo-sounding and autopilot are common. This means that the auxiliary engine now also performs the vital function of powering an alternator to provide electrical power and to recharge the yacht’s batteries. For yachts engaged on long-range cruising, wind-, water- and solar-powered generators can perform the same function.
yachts were made of wood or steel, but a much wider range of materials is used today. Although wood hulls are still in production, the most common construction material is fibreglass, followed byaluminium, steel, carbon fibre, and ferrocement.