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Ship


A ship is a large buoyant watercraft. Ships are generally distinguished from boats based on size, shape and cargo or passenger capacity. Ships are used on lakes, seas, rivers, and oceans for a variety of activities, such as the transport of people or goods, fishing, entertainment, public safety, and warfare. Historically, a "ship" was a sailing vessel with at least three square-rigged masts and a full bowsprit.

In armed conflict and in daily life, ships have become an integral part of modern commercial and military systems. Fishing boats are used by millions of fishermen throughout the world. Military forces operate vessels for naval warfare and to transport and support forces ashore. Commercial vessels, nearly 35,000 in number, carried 7.4 billion tons of cargo in 2007. As of 2011, there are about 104,304 ships with IMO numbers in the world.

Ships were always a key in history's great explorations and scientific and technological development. Navigators such as Zheng He spread such inventions as the compass and gunpowder. Ships have been used for such purposes as colonization and the slave trade, and have served scientific, cultural, and humanitarian needs. After the 16th century, new crops that had come from and to the Americas via the European seafarers significantly contributed to the world population growth.Ship transport has shaped the world's economy into today's energy-intensive pattern.



Motorised fishing trawlers, trap setters, seiners, longliners, trollers & factory ships.
Traditional sailing and rowed fishing vessels and boats used for handline fishing
Cable layers
Tugboats, dredgers, salvage vessels, tenders, Pilot boats.
Floating dry docks, floating cranes, lightership.
Liners, cruise and Special Trade Passenger (STP) ships
Cross-channel, coastal and harbour ferries.
Luxury & cruising yachts
Sail training and multi-masted ships
Surface combatant- deep and shallow draft
Submarines
  • Dry cargo ships - tramp freighters, bulk carriers, cargo liners, container vessels, barge carriers, Ro-Ro ships, refrigerated cargo ships, timber carriers, livestock & light vehicle carriers.
  • Liquid cargo ships - Oil tankers, liquefied gas carriers, chemical carriers.
  • Passenger vessels
  • Recreational boats and craft - rowed, masted and motorised craft
  • Special-purpose vessels - weather and research vessels, deep sea survey vessels, and icebreakers.
  • Submersibles - industrial exploration, scientific research, tourist and hydrographic survey.
  • Warships
  • Masts can be the home of antennas, navigation lights, radar transponders, fog signals, and similar devices often required by law.
  • Ground tackle includes equipment such as mooring winches, windlasses, and anchors. Anchors are used to moor ships in shallow water. They are connected to the ship by a rope or chain. On larger vessels, the chain runs through a hawsepipe.
  • Cargo equipment such as cranes and cargo booms are used to load and unload cargo and ship's stores.
  • Safety equipment such as lifeboats, liferafts, and survival suits are carried aboard many vessels for emergency use.
  • For most vessels, known as displacement vessels, the vessel's weight is offset by that of the water displaced by the hull.
  • For planing ships and boats, such as the hydrofoil, the lift developed by the movement of the foil through the water increases with the vessel's speed, until the vessel is foilborne.
  • For non-displacement craft such as hovercraft and air-cushion vehicles, the vessel is suspended over the water by a cushion of high-pressure air it projects downwards against the surface of the water.
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Wikipedia

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