A multihull is a ship or boat with more than one hull, whereas a vessel with a single hull is a monohull.
A catamaran is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stabilized craft, deriving its stability from its wide beam, rather than from a ballasted keel as with a monohull boat. Catamarans typically have less hull volume, smaller displacement, and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes.
Windsurfing is a surface water sport that is a combination of surfing and sailing. It is also referred to as "sailboarding" and "boardsailing", and emerged in the early 1970s from the surf culture of California. Windsurfing had gained a following across North America by the late 1970s and had achieved significant global popularity by the 1980s.
The Saskatchewan Roughriders are a professional Canadian football team based in Regina, Saskatchewan. The Roughriders compete in the Canadian Football League (CFL) as a member club of the league's West division.
A trimaran is a multihull boat that comprises a main hull and two smaller outrigger hulls which are attached to the main hull with lateral beams. Most modern trimarans are sailing yachts designed for recreation or racing; others are ferries or warships. They originated from the traditional double-outrigger hulls of the Austronesian cultures of Maritime Southeast Asia; particularly in the Philippines and Eastern Indonesia, where it remains the dominant hull design of traditional fishing boats. Double-outriggers are derived from the older catamaran and single-outrigger boat designs.
Robert Fredrick Paulsen III is an American voice actor, and singer, who has done many voice roles in various films, television shows, and video games, including Raphael and Donatello from the 1987 and 2012 animated series respectively of Teenage Mutant Ninja Turtles; Yakko Warner, Dr. Otto Scratchansniff, and Pinky from Animaniacs and Pinky and the Brain; Carl Wheezer from Jimmy Neutron: Boy Genius and its spin-off television series The Adventures of Jimmy Neutron, Boy Genius; Peck the Rooster from Barnyard and its spin-off television show series Back at the Barnyard; Spike in The Land Before Time films and television series; and the title character in The Mask: Animated Series. In total, Paulsen has been the voice of over 250 different animated characters and performed in over 1000 commercials. He received a Daytime Emmy Award for Outstanding Performer in an Animated Program for his role as Pinky, and three Annie Awards.
Proas are various types of multi-hull outrigger sailboats of the Austronesian peoples. The terms were used for native Austronesian ships in European records during the Colonial era indiscriminately, and thus can confusingly refer to the double-ended single-outrigger boats of Oceania, the double-outrigger boats of Island Southeast Asia, and sometimes ships with no outriggers or sails at all.
KITT is the short name of two fictional characters from the adventure franchise Knight Rider. While having the same acronym, the KITTs are two different entities: one known as the Knight Industries Two Thousand, which appeared in the original TV series Knight Rider, and the other as the Knight Industries Three Thousand, which appeared first in the two-hour 2008 pilot film for a new Knight Rider TV series and then the new series itself. In both instances, KITT is an artificially intelligent talking electronic computer module in the body of a highly advanced, very mobile, robotic automobile: the original Knight Industries Two Thousand as a 1982 Pontiac Firebird Trans Am, and the Knight Industries Three Thousand as a 2008–2009 Ford Shelby GT500KR.
A beachcat is an off-the-beach class of catamaran ("cat") sailboat.
David John Mallow is an American voice actor.
The Rotax 912 is a horizontally-opposed four-cylinder, naturally aspirated, four-stroke aircraft engine with a reduction gearbox. It features liquid-cooled cylinder heads and air-cooled cylinders. Originally equipped with carburetors, later versions are fuel injected. Dominating the market for small aircraft and kitplanes, Rotax produced its 50,000th 912-series engine in 2014. Originally available only for light sport aircraft, ultralight aircraft, autogyros and drones, the 912-series engine was approved for certified aircraft in 1995.
A sailing hydrofoil, hydrofoil sailboat, or hydrosail is a sailboat with wing-like foils mounted under the hull. As the craft increases its speed the hydrofoils lift the hull up and out of the water, greatly reducing wetted area, resulting in decreased drag and increased speed. A sailing hydrofoil can achieve speeds exceeding twice the wind speed.
A stability constant is an equilibrium constant for the formation of a complex in solution. It is a measure of the strength of the interaction between the reagents that come together to form the complex. There are two main kinds of complex: compounds formed by the interaction of a metal ion with a ligand and supramolecular complexes, such as host–guest complexes and complexes of anions. The stability constant(s) provide the information required to calculate the concentration(s) of the complex(es) in solution. There are many areas of application in chemistry, biology and medicine.
Forces on sails result from movement of air that interacts with sails and gives them motive power for sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and sail-powered land vehicles. Similar principles in a rotating frame of reference apply to wind mill sails and wind turbine blades, which are also wind-driven. They are differentiated from forces on wings, and propeller blades, the actions of which are not adjusted to the wind. Kites also power certain sailing craft, but do not employ a mast to support the airfoil and are beyond the scope of this article.