multiple-screw hull

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• Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …   Wikipedia

• Ship — A ship IPA|/ʃɪp/ audio|en us ship.ogg|Audio (US) is a large vessel that floats on water. Ships are generally distinguished from boats based on size. Ships may be found on lakes, seas, and rivers and they allow for a variety of activities, such as …   Wikipedia

• ship — shipless, adj. shiplessly, adv. /ship/, n., v., shipped, shipping. n. 1. a vessel, esp. a large oceangoing one propelled by sails or engines. 2. Naut. a. a sailing vessel square rigged on all of three or more masts, having jibs, staysails, and a… …   Universalium

• Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …   Wikipedia

• Timeline of Russian inventions and technology records — The Hall of Space Technology in the Tsiolkovsky State Museum of the History of Cosmonautics, Kaluga, Russia. The exhibition includes the models and replicas of the following Russian inventions: the first satellite, Sputnik 1 (a ball under the… …   Wikipedia

• CSS Alabama — For other ships named Alabama, see USS Alabama. A painting of CSS Alabama Career …   Wikipedia

• Santa Fe Railroad Tugboats — The Santa Fe Railroad barged rail cars across the San Francisco Bay for much of the 20th century as there is no direct rail link to the San Francisco peninsula. In the post World War II period a fleet of three tugs moved the barges: the Paul P.… …   Wikipedia

• naval ship — Introduction       the chief instrument by which a nation extends its military power onto the seas. Warships protect the movement over water of military forces to coastal areas where they may be landed and used against enemy forces; warships… …   Universalium

• Marine steam engine — Period cut away diagram of a triple expansion steam engine installation, circa 1918 A marine steam engine is a reciprocating steam engine that is used to power a ship or boat. Steam turbines and diesel engines largely replaced reciprocating steam …   Wikipedia

• History of submarines — The history of submarines covers the historical chronology and facts related to submarines , manned autonomous boats that operate underwater. It includes the history of submersibles , which were designed primarily to operate on the surface, and… …   Wikipedia

• ROKS Cheonan sinking — Four photos show damage to the ROKS Cheonan clockwise from upper left: (1) stack damage; (2) front portion (port side) showing the break point; (3) water pressure marks on the hull bottom; (4) a large fragment is lifted from the sea. Date 26… …   Wikipedia