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Boatbuilder
Boat building is the design and construction of boats and their systems. This includes at a minimum a hull, with propulsion, mechanical, navigation, safety and other systems as a craft requires. Construction materials and methods Wood Wood is the traditional boat building material used for hull and spar construction. It is buoyant, widely available and easily worked. It is a popular material for small boats (of e.g. length; such as dinghies and sailboats). Its abrasion resistance varies according to the hardness and density of the wood and it can deteriorate if fresh water or marine organisms are allowed to penetrate the wood. Woods such as Teak, Totara and some cedars have natural chemicals which prevent rot whereas other woods, such as Pinus radiata, will rot very quickly. The hull of a wooden boat usually consists of planking fastened to frames and a keel. Keel and frames are traditionally made of hardwoods such as oak while planking can be oak but is more often softw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waka (canoe)
Waka () are Māori watercraft, usually canoes ranging in size from small, unornamented canoes (''waka tīwai'') used for fishing and river travel to large, decorated war canoes (''waka taua'') up to long. The earliest remains of a canoe in New Zealand were found near the Anaweka estuary in a remote part of the Tasman District and radiocarbon-dated to about 1400. The canoe was constructed in New Zealand, but was a sophisticated canoe, compatible with the style of other Polynesian voyaging canoes at that time. Since the 1970s about eight large double-hulled canoes of about 20 metres have been constructed for oceanic voyaging to other parts of the Pacific. They are made of a blend of modern and traditional materials, incorporating features from ancient Melanesia, as well as Polynesia. Waka taua (war canoes) ''Waka taua'' (in Māori, ''waka'' means "canoe" and ''taua'' means "army" or "war party") are large canoes manned by up to 80 paddlers and are up to in length. Large waka, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mahogany
Mahogany is a straight-grained, reddish-brown timber of three tropical hardwood species of the genus ''Swietenia'', indigenous to the AmericasBridgewater, Samuel (2012). ''A Natural History of Belize: Inside the Maya Forest''. Austin: University of Texas Press. pp. 164–165. . and part of the pantropical chinaberry family, Meliaceae. Mahogany is used commercially for a wide variety of goods, due to its coloring and durable nature. It is naturally found within the Americas, but has also been imported to plantations across Asia and Oceania. The mahogany trade may have begun as early as the 16th century and flourished in the 17th and 18th centuries. In certain countries, mahogany is considered an invasive species. Description The three species are: *Honduran or big-leaf mahogany ('' Swietenia macrophylla''), with a range from Mexico to southern Amazonia in Brazil, the most widespread species of mahogany and the only genuine mahogany species commercially grown today. Illegal l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Scandinavia
The history of Scandinavia is the history of the geographical region of Scandinavia and its peoples. The region is located in Northern Europe, and consists of Denmark, Norway and Sweden. Finland and Iceland are at times, especially in English-speaking contexts, considered part of Scandinavia. Pre-historic age Little evidence remains in Scandinavia of the Stone Age, the Bronze Age, or the Iron Age except limited numbers of tools created from stone, bronze, and iron, some jewelry and ornaments, and stone burial cairns. One important collection that exists, however, is a widespread and rich collection of stone drawings known as petroglyphs. Stone Age During the Weichselian glaciation, almost all of Scandinavia was buried beneath a thick permanent sheet of ice and the Stone Age was delayed in this region. Some valleys close to the watershed were indeed ice-free around 30 000 years B.P. Coastal areas were ice-free several times between 75 000 and 30 000 years B.P. and the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinker (boat Building)
Clinker built (also known as lapstrake) is a method of boat building where the edges of hull planks overlap each other. Where necessary in larger craft, shorter planks can be joined end to end, creating a longer strake or hull plank. The technique originated in Scandinavia, and was successfully used by the Anglo-Saxons, Frisians, Scandinavians, typically in the vessels known as cogs employed by the Hanseatic League. Carvel construction, where plank edges are butted smoothly, seam to seam, supplanted clinker construction in large vessels as the demand for capacity surpassed the limits of clinker construction. (See Comparison between clinker and carvel below.). Examples of clinker-built boats that are directly descended from those of the early medieval period are seen in the traditional round-bottomed Thames skiffs, and the larger (originally) cargo-carrying Norfolk wherries of England. Etymology From ''clinch'', or ''clench'', a common Germanic word, meaning “to fasten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carvel (boat Building)
Carvel built or carvel planking is a method of boat building in which hull planks are laid edge to edge and fastened to a robust frame, thereby forming a smooth surface. Traditionally the planks are neither attached to, nor slotted into, each other, having only a caulking sealant between the planks to keep water out. Modern carvel builders may attach the planks to each other with glues and fixings. It is a "frame first" method of hull construction, where the shape is determined by the framework onto which the planks are fixed. This is in contrast to "plank first" or "shell first" methods, where the outer skin of the hull is made and then reinforced by the insertion of timbers that are fitted to that shape. The most common modern "plank first" method is clinker construction; in the classical period "plank first" involved joining the edges of planks with mortise and tenon joints within the thickness of the timbers, superficially giving the smooth-hull appearance of carvel const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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