200 Million Dollars Yacht In The Worlld Which Belongs To One Of The Founders Of Microsoft, Paul Allen

Until the 1950s, almost all 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 by aluminium, steel, carbon fiber, and ferrocement (rarer because of insurance difficulties). The use of wood has changed and is no longer limited to traditional board-based methods, but also include modern products such as plywood, veneers and epoxy resins. Wood is mostly used by hobbyists or wooden boat purists when building an individual boat.
Sailing yachts
Sailing yachts can range in overall length (Length Over All—LOA) from about 20 ft (6 m) to well over 100 ft (30 m), where the distinction between a yacht and a ship becomes blurred. Most privately owned yachts fall in the range of about 25–45 ft (7–14 m); the cost of building and keeping a yacht rises quickly as length increases. In the U.S., sailors tend to refer to smaller yachts as sailboats, while referring to the general sport of sailing as yachting. Within the limited context of sailboat racing, a yacht is any sailing vessel taking part in a race, regardless of size.