Jetboat - Jetboat A jetboat is a boat propelled by a jet of water ejected from the back of the craft. Unlike a powerboat or motorboat that uses a propeller in the water behind the boat, a jetboat draws the water from under the boat into an impeller pump, known as a jet unit, inside the boat then expels it through a nozzle at the stern. Steering is accomplished by small vanes that direct the water jet in the direction the boat needs to go. Because of this the jetboat is highly maneuverable and can often be reversed and brought to a stop within its own length from full speed in a maneuver known as a jetboat turn. By analogy to aircraft, a conventional screw propellor accelerates a.
Jet sprint boat racing - characterised by many tight turns. The racing format is usually a sequence of time trials. While the Jetboat was invented in New Zealand, this form of boat racing is becoming more popular in Australasia, and attracts large crowds to events. see also sport, Offshore Powerboat racing.
Bill Hamilton - as Bill Hamilton, was a New Zealander who developed the modern jetboat. Hamilton never claimed to have invented the jet boat. He once said "I do not claim to have invented marine jet propulsion. The honour belongs to a gentleman named Archimedes, who lived some years ago". What he did was refine the design enough to produce the first useful modern jet boat. In the 1950s Hamilton set out try to build a boat that could navigate the shallow fast flowing rivers where he lived. The rivers were too shallow for propeller driven boats to navigate as the propeller would hit the river bottom. He investigated the American Hanley Hydro-Jet, a model which drew in water and fired it out through a steerable nozzle underneath the boat. Even when further adapted.
Boat - propulsion: oars, paddles, a setting pole, a sail or a motor. see Norfolk wherry, Dutch Barge, Luxemotor, Tjalk, Peniche, Yachting, Cruising, Sailboat, Lifeboat, Dinghy, Canoe, Kayak, Folding boat, Motorboat, Powerboat Jetboat, Rigid Hulled Inflatable Boat (RIB), Whaleboat, Pinnace, Raft, Ferry, Dhow, Go-fast boat, Felucca. See also: Sport, Offshore powerboat racing, Jet sprint boat racing, Jet boat In rowing, a boat refers to the collection of people rowing a particular shell, which is the term applied to the actual vehicle. So a university might refer to its first boat, meaning the rowers who make up their best team, rather than their best piece of equipment. A submarine is generally referred to as a boat rather than a ship. like in "U-boat", A ship is informally known as a boat, especially by its.
List of New Zealanders - - racing driver Ian Ferguson - kayaker Neil Finn - singer Tim Finn - singer Bernard, Lord Freyberg of Wellington - General, and Victoria Cross winner Harold Gillies - plastic surgeon Charles Goldie - artist Bill Hamilton - developed the modern jetboat Sir Edmund Hillary - mountaineer Denny Hulme - world champion racing driver Rachel Hunter - supermodel Peter Jackson - film director Vaughan Jones - mathematician (Field's medallist) "Cobber" Kain - RAF fighter ace (first pilot to win a DFC in WW II) Phil Keoghan - TV presenter (born in New Zealand) Lucy Lawless - actress (Xena Warrior Princess) Jonah Lomu - rugby player Jack Lovelock - athlete Len Lye - artist/film maker Katherine Mansfield - author Ngaio Marsh - author and theatrical director Don McKinnon - Secretary General of.
