The largest ship incorporating stealth technology is the Swedish Visby-class corvette, which is approximately 72 m (236 ft) long and has a displacement of 600 tonnes (1.32 million lb). Developed by the Kockums shipyard, the carbon fibre vessel is far lighter than a conventional ship of its size, and features the large flat surfaces commonly used in aircraft to provide low radar visibility. The Visby prototype made her maiden voyage in December 2001. The carbon fibre construction means that the ship also has a low magnetic signature, meaning there's one less way for it to be detected. It also has low noise levels and exhaust emmissions are released in such a way as to reduce the infra-red signature. Wherever possible, equipment usually mounted on the decks or superstructure has been stowed below, ensuring that her lines are as clean as possible. The Visby has a crew of 43.Corvettes are fast small to medium sized combat vessels that are employed in a variety of roles.
