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The Cracksman 20 is an early fibreglass-hulled Fractional rigged sloop sailing catamaran used for 'day boat' trips and longer cruises. Designed by Michael Henderson in the early 1960s and built by Newbridge Boats Ltd from 1963, the boat's shallow draft (when sailing) of less than three feet allows the boat to sail with versatility in even the shallowest of waters.
The Spirit of Dallas catamaran on White Rock Lake A Formula 16 beachable catamaran Powered catamaran passenger ferry at Salem, Massachusetts, United States. A catamaran (/ ˌ k æ t ə m ə ˈ r æ n /) (informally, a "cat") is a watercraft with two parallel hulls of equal size. The wide distance between a catamaran's hulls imparts stability ...
A catamaran is a vessel with twin hulls. Commercial catamarans began in 17th century England. Separate attempts at steam-powered catamarans were carried out by the middle of the 20th century. However, success required better materials and more developed hydrodynamic technologies. During the second half of the 20th century catamaran designs ...
The Stiletto 27 is an American trailerable catamaran sailboat that was designed by Bill Higgins and Don Ansley as a racer/cruiser and first built in 1976. [1] [2] [3] [4]The design was originally marketed by the manufacturer just as the Stiletto, but later became the Stiletto 27 to differentiate it from the later 1983 Stiletto 30 and 1985 Stiletto 23 designs.
A small waterplane area twin hull, better known by the acronym SWATH, is a catamaran design that minimizes hull cross section area at the sea's surface. Minimizing the ship's volume near the surface area of the sea , where wave energy is located, minimizes a vessel's response to sea state, even in high seas and at high speeds.
The hulls have plumb stems, reverse transoms with steps to swimming platforms, twin internally mounted spade-type rudders controlled by a wheel and a twin fixed fin keels. [ 1 ] [ 2 ] [ 3 ] The boat displaces 7,275 lb (3,300 kg) and has a draft of 2.95 ft (0.90 m) with the standard keels.
The first twin-keeled sailing vessel is widely believed to be the Bluebird [2] that was built by Lord Riverdale and launched in 1924. Despite being the first twin-keeled yacht, and being built without much in the way of guiding engineering and science, it was quite radical as it had twin rudders (as racers have today), and a long narrow hull with a pointed, or "canoe," stern.
The class was founded during the 1960s and was part of the 4-tier IYRU (now ISAF) approach to divide up the sports catamaran sailing scene into 4 separate groups. These A, B, C and D classes were governed by a very small set of class rules to which each design had to comply. [2] [3] The A-Class is the largest remaining of those 4 main classes.