The sailing dinghy has its origin as a flat-bottomed dinghy that was used alongside warships and merchant ships. Today the definition of a dinghy is a sporty sail boat, in contrast to the sailing yacht equipped with a sword instead of a keel. Although a dinghy can capsize, it cannot sink due to its buoyancy. Sailing on a dinghy or a skiff requires not only balance and experienced sailing skills, but also strength and endurance. Modern materials such as carbon fiber have made the modified dinghy a high-tech machine for sailing enthusiasts.