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Model of Emma Mærsk undergoing testing in a ship model basin. In marine engineering, a ship motion test is hydrodynamic test performed with ship models for the purpose of designing a new (full sized) ship, or refining the design of a ship to improve its performance at sea. [1] Tests are carried out in a ship model basin or "towing tank". [2]
A folding propeller is a type of propeller whose blades automatically fold out when the engine is turning, and then fold back (or "feather") when the engine stops. Folding propellers are found on sailing yachts, on model airplanes, and increasingly on self-launching gliders and small motor gliders, such as the Aériane Swift PAS.
Whereas the propeller on a large ship will be immersed in deep water and free of obstacles and flotsam, yachts, barges and river boats often suffer propeller fouling by debris such as weed, ropes, cables, nets and plastics.
Model yacht clubs have existed for many years in Great Britain, Ireland and the United States, most of them holding a number of regattas during each season. The rules do not generally require the owner or skipper of a model to build his own craft, but among model yachtsmen the designing and the construction of the boats constitute as important and interesting a part of the sport as the actual ...
A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...
The Pyro Plastics Corporation was an American manufacturing company based in Union Township, NJ and popular during the 1950s and 1960s that produced toys and plastic model kits. Some of the scale models manufactured and commercialised by Pyro were cars, motorcycles, aircraft, ships, and military vehicles, and animal and human figures.
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Thus, ships carried a great deal of significance to the people of the ancient world, and this is expressed partly through the creation of boat and ship models. Ancient boat and ship models are made of a variety of materials and are intended for different purposes. The most common purposes for boat and ship models include burial votives, house ...