1 Types 2 Usage 3 Design 4 Propulsion 5 Construction 6 Registration 7 Navigation 8 Weapons 9 See also 10 References 11 External links
Types Most watercraft would be described as either a ship or a boat. However, there are numerous craft which many people would consider neither a ship nor a boat, such as: surfboards (when used as a paddle board), underwater robots, seaplanes, jetskis and torpedoes. Although ships are typically larger than boats, the distinction between those two categories is not one of size per se.
Ships are typically large ocean-going vessels; whereas boats are smaller, and typically travel most often on inland or coastal waters. A rule of thumb says "a boat can fit on a ship, but a ship can't fit on a boat", and a ship usually has sufficient size to carry its own boats, such as lifeboats, dinghies, or runabouts. Local law and regulation may define the exact size (or the number of masts) that distinguishes a ship from a boat. Traditionally, submarines were called "boats", perhaps reflecting their cramped conditions: small size reduces the need for power, and thus the need to surface or snorkel for a supply of the air that running marine diesel engines requires; whereas, in contrast, nuclear-powered submarines' reactors supply power without consuming air, and such craft are large, much roomier, and classed as ships in some navies. A merchant ship is any floating craft that transports cargo for the purpose of earning revenue. In this context, a passenger ship's "cargo" is its passengers.
The term "watercraft" (unlike such terms as aircraft or spacecraft) is rarely used to describe any individual object: rather the term serves to unify the category that ranges from jet skis to aircraft carriers. Such a vessel may be used in saltwater and freshwater; for pleasure, recreation, physical exercise, commerce, transport or military missions. Usage
Racing scene of a personal water craft
Usually the purposes behind watercraft designs and skills are for
seafaring education or leisure activities, fishing and resource
extraction, transportation of cargo or passengers, and for conducting
combat or salvage operations. In general, the purpose of a water
vehicle identifies its utility with a maritime industry sub-sector.
Main article: Naval architecture
The design from which a water vehicle is created usually seeks to
achieve a balance between internal capacity (tonnage), speed and
Tonnage is predominantly a consideration in transport
operations, speed is important for warships, and safety is a primary
consideration for less experienced or often smaller and less stable
training and leisure vehicles. This is due to the great level of
regulatory compliance required by the larger watercraft, which ensures
very infrequent instances of foundering at sea through application of
extensive computer modeling and ship model basin testing before
shipyard construction begins.
Main article: Marine propulsion
Severn class lifeboat
Main article: Shipbuilding Secondary applications of technology in watercraft have been those of used structural materials, navigation aids; and in the case of warships, weapon systems. The purpose of usage and the physical environment define the materials used in construction which had historically included grasses, leather, timbers, metals combined with timber or without, silicate and plastic derivatives, and others. Registration
A vessel registration number (located near the top) on a Yamaha SuperJet
aircraft carriers breech-loading rifled guns direct enemy hull ramming to use of basic mechanical projectiles firing shells missiles and remotely piloted devices naval mine layers and minesweeper smooth-bore cannonball firing guns torpedo-armed submarines warships armed with fire control directed weapons
Until development of steam propulsion was coupled with rapid-firing breech-loading guns, naval combat was often concluded by a boarding combat between the opposing crews. Since the early 20th century, there has been a substantial development in technologies which allow force projection from a naval task force to a land objective using marine infantry. See also
^ "The Age of Sail". HMS Trincomalee. Retrieved 12 April 2016.
Look up watercraft or vessel in Wiktionary, the free dictionary.
Wikimedia Commons has media related to Watercraft.
The Canadian Museum of Civilization - Native
GND: 4136257-3 KulturNav: 3983b0bb-2a7c-4917