Awatercraftorwaterborne vessel is a conveyance for travel across or under water, such as a boat, ship, yacht, hovercraftorsubmarine.
Watercraft include the following types, many of which have a large variety of subcategories and uses: ships, boats, canoes, kayaks, surfboards, and sailboards.[2]
The design of watercraft requires a tradeoff among internal capacity (tonnage), speed and seaworthiness. 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.[3]
Watercraft may be propelled by poles, paddles, or oars, sailsorengines.[2]
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