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There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design. Shapes range from a nearly perfect box, in the case of scow barges, to a needle-sharp surface of revolution in the case of a racing multihull sailboat.
Model showing the cross-section of Vasa, demonstrating the hull shape created by tumblehome Tumblehome was common in sailing vessels, particularly in the latter part of the 16th century. It allowed for maximizing a vessel's beam and creating a low centre of gravity (by decreasing the amount of structure, and therefore mass, at deck level), both ...
A padded V-hull is a hull shape found on both pure race boats and standard recreational craft. A variation of the more common V-hull , which has a V-section throughout the length of the vessel, a padded V-hull has a V-section at the bows and the forward part of the keel which then segues into a flat area typically 0.15 metres (5.9 in) to 0.25 ...
Such a hull has a maximum "hull speed" which is a function of its waterline length. An exception is the catamaran, whose twin hulls are usually so fine that they do not engender a bow wave. Planing hulls: planing hulls have a shape that allows the boat to rise out of the water as the speed increases. Sail boats that plane are typical V-shaped ...
Sail components include the features that define a sail's shape and function, plus its constituent parts from which it is manufactured. A sail may be classified in a variety of ways, including by its orientation to the vessel (e.g. fore-and-aft) and its shape, (e.g. (a)symmetrical, triangular, quadrilateral, etc.).
A cathedral hull, seen from blow, with a simple platform for the rest of the boat. A cathedral hull is a hull shape used in modern boats, usually power-driven. It has sponsons which extend almost as far forward as the main hull. The airspace between the hulls may be very small or nonexistent.
The round bilge hull is the most commonly used hull form as the shape promotes planing and has other good properties as well. The S-bottom hull allows relative comfort on the boat, as the shape reduces the rolling movement on the boat.
The reformed company engaged yacht designers Mark Ellis for cruising boats like the Niagara 35 and the Nonsuch line and Germán Frers for racing boats like the Niagara 31. The Nonsuch boats achieved notable commercial success, with 975 built. They are noted for their distinctive hull shapes, large interiors and unstayed catboat rigs. [1]