Yachts come in various sizes and are used for different purposes. Sailing yachts are mainly dependent on wind for their movement thought they might have a small combustion engine to be used as and when required. They normally operate in shallow waters. Motor yachts and luxury yachts have more elaborate arrangements for motive power and control and more recreational facilities as well. Another type of yachts known as racing yachts are used for professional or amateur racing competitions even though they are not as fast as the F1 Powerboats.
Most of the yachts irrespective of their size and type do have certain basic equipment which is required for navigation and communication purposes and this includes equipment such as GPS systems, radar, auto-pilot and so forth. The cost of building or owning a yacht obviously rises with the size, amenities, equipment and other accessories which are present on board.