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Lighter (barge)
A lighter is a type of flat-bottomed barge used to transfer goods and passengers to and from Mooring (watercraft), moored ships. Lighters were traditionally unpowered and were moved and steered using long oars called "sweeps" and the motive power of water currents. They were operated by skilled workers called lightermen and were a characteristic sight in London Docklands, London's docks until about the 1960s, when technological changes made this form of lightering largely redundant. Unpowered lighters continue to be moved by powered tugs, however, and lighters may also now themselves be powered. The term is also used in the Lighter Aboard Ship (LASH) system. The name itself is of uncertain origin, but is believed to possibly derive from an old Dutch language, Dutch or German language, German word, ''lichten'' (to lighten or unload). In Dutch and German, the words ''lichter'' or ''Leichter'' are still used for smaller ships that take over goods from larger ships. Lighters, albeit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barge
A barge is typically a flat-bottomed boat, flat-bottomed vessel which does not have its own means of mechanical propulsion. Original use was on inland waterways, while modern use is on both inland and ocean, marine water environments. The first modern barges were pulled by tugs, but on inland waterways, most are pushed by Pusher (boat), pusher boats, or other vessels. The term ''barge'' has a rich history, and therefore there are many types of barges. History of the barge Etymology ''Barge'' is attested from 1300, from Old French ''barge'', from Vulgar Latin ''barga''. The word originally could refer to any small boat; the modern meaning arose around 1480. ''Bark'' "small ship" is attested from 1420, from Old French ''barque'', from Vulgar Latin ''barca'' (400 AD). A more precise meaning (see Barque) arose in the 17th century and often takes the French spelling for disambiguation. Both are probably derived from the Latin ''barica'', from Greek language, Greek ''baris'' "Eg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tugboat
A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, such as in crowded harbors or narrow canals, or cannot move at all, such as barges, disabled ships, log rafts, or oil platforms. Some are ocean-going, and some are icebreakers or salvage tugs. Early models were powered by steam engines, which were later superseded by diesel engines. Many have deluge gun water jets, which help in firefighting, especially in harbours. Types Seagoing Seagoing tugs (deep-sea tugs or ocean tugboats) fall into four basic categories: #The standard seagoing tug with model bow that tows almost exclusively by way of a wire cable. In some rare cases, such as some USN fleet tugs, a synthetic rope hawser may be used for the tow in the belief that the line can be pulled aboard a disabled ship by the crew owing t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Barge
A Dutch barge is a traditional flat-bottomed shoal-draught barge, originally used to carry cargo in the shallow '' Zuiderzee'' and the waterways of The Netherlands. There are many types of Dutch barge, with characteristics determined by regional conditions and traditions. Originally, Dutch barges were sailing craft with wooden hulls. Today, while few wooden examples remain, there are many steel barges that are 100 years old or more. Although most Dutch barges have been converted to motor-propulsion, ''schuyt'' sailing contests are still held on the IJsselmeer and on the Wadden Sea ( Waddenzee). Dutch barges have become popular live-aboard leisure craft, and brand-new "Dutch-style" examples continue to be built. The Dutch barge A typical traditional Dutch barge would have gaff rig, a bluff bow and stern, a pair of leeboards and a large rudder. The leeboards and rudder would be raised by an arrangement of blocks and tackles. Schuyts engaged in eel fishing were said to have b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Car Float
A railroad car float or rail barge is a specialised form of Lighter (barge), lighter with railway tracks mounted on its deck used to move rolling stock across water obstacles, or to locations they could not otherwise go. An unpowered barge, it is towed by a tugboat or pushed by a towboat. This is distinguished from a train ferry, which is self-powered. Historical operations U.S. East Coast During the American Civil War, Civil War, Union general Herman Haupt, a civil engineer, used huge barges fitted with tracks to enable military trains to cross the Rappahannock River in support of the Army of the Potomac. Beginning in the 1830s, the Baltimore and Ohio Railroad (B&O) operated Capital Subdivision#Alexandria Division, a car float across the Potomac River, just south of Washington, D.C., between Shepherds Landing on the east shore, and Alexandria, Virginia on the west. The ferry operation ended in 1906. The B&O operated a car float across the Baltimore Inner Harbor until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrew Higgins
Andrew Jackson Higgins (28 August 1886 – 1 August 1952) was an American businessman and boatbuilder who founded Higgins Industries, the New Orleans, Louisiana, New Orleans–based manufacturer of "LCVP (United States), Higgins boats" (Landing Craft, Vehicle, Personnel, or LCVPs) during World War II. The company started out as a small boat-manufacturing business, and became one of the biggest industries in the world with upwards of eighty thousand workers and government contracts worth nearly three hundred fifty million dollars. General Dwight Eisenhower is quoted as saying, "Andrew Higgins ... is the man who won the war for us. ... If Higgins had not designed and built those LCVPs, we never could have landed over an open beach. The whole strategy of the war would have been different." Adolf Hitler recognized Higgins war efforts in ship production and bitterly dubbed him the "New Noah".Brinkley, Douglas, ''The Man Who Won the War for Us'', American Heritage, 20000101, Vol. 51, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LACV-30
The LACV-30 (Lighter Air Cushion Vehicle, 30 tons) was a hovercraft used by the U.S. Army Mobility Equipment Research and Development Command (MERADCOM) for offloading cargo from amphibious ships. For logistic transport, the Army was already using the LARC-V and LARC-LX, huge 4-wheeled vehicles referred to as 'barges on wheels'. The Army used the LACV-30 to transport 20 ft. standard MILVAN containers as well as outsize loads that would not fit on a LARC-V or LARC-LX. MERADCOM operated 24 LACV-30s between 1983 and 1994. The LACV-30 was derived from the civilian Bell Voyageur air-cushion vehicle (hovercraft). It is capable of carrying 30 tons (27 tonnes). The hull is that of a large barge, but behind the deck house at the stern, there are 2 air propellers, which are followed by rudders, while under the hull there is a cushion of air which is inflated by 2 fans. There is a large crane at the bow, with a rectangular superstructure shaped like that of a typical river barge. A note ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derrick
A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its Guy-wire, guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg derrick. The most basic type of derrick is controlled by three or four lines connected to the top of the mast, which allow it to both move laterally and cant up and down. To lift a load, a separate line runs up and over the mast with a hook on its free end, as with a Crane (machine), crane. Derricks are especially useful for high-rise rigging, jobs that cover a long period of time, or jobs when the impact to street or pedestrian traffic is a concern. Forms of derricks are commonly found aboard ships and at Dock (maritime), docking facilities. Large derricks mounted on dedicated Crane vessel, vessels are known as floating derricks and Sheerleg, shearlegs. The term de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maceration (sewage)
Maceration, in sewage treatment, is the use of a machine that reduces solids to small pieces in order to deal with rags and other solid waste. Macerating toilets use a grinding or blending mechanism to reduce human waste to a slurry, which can then be moved by pumping. This is useful when, for example, water pressure is low or one wishes to install a toilet below the sewer drain pipe. Maceration can be achieved by using a chopper pump in the sewage lift station or at the wastewater treatment plant. When the flush is triggered, wastewater flows into the macerator, and when the water level rises, pressure activates the unit, causing the stainless steel blades to rotate at 3,600 rpm, pulverizing the wastewater into fine particles. When this process is complete, the wastewater is pumped to a soil stack or septic tank through a single small diameter pipe (¾ inch or 1 inch) that is much easier to install on site. Macerator maintenance includes regular cleaning and inspection to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twenty-foot Equivalent Unit
The twenty-foot equivalent unit (abbreviated TEU or teu) is a general unit of cargo capacity, often used for container ships and container ports.Rowlett, 2004. It is based on the volume of a intermodal container, a standard-sized metal box that can be easily transferred between different modes of transportation, such as ships, trains, and trucks. Detailed dimensions: 20-foot and 40-foot containers The standard intermodal container is long and wide. The height of such containers is most commonly but ranges from to . Another standard container is slightly more than twice as long: , dubbed a forty-foot equivalent unit (often FEU or feu). The reason the smaller container is short of 20 feet is to allow it to be stacked efficiently with 40-foot containers. The twistlocks on a ship are set so that two standard 20-foot containers have a gap of , allowing a single 40-foot container to fit precisely on top. The 40-foot containers have found wider acceptance, as they can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonne
The tonne ( or ; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton ( United States customary units) and the long ton ( British imperial units). It is equivalent to approximately 2,204.6 pounds, 1.102 short tons, and 0.984 long tons. The official SI unit is the megagram (Mg), a less common way to express the same amount. Symbol and abbreviations The BIPM symbol for the tonne is t, adopted at the same time as the unit in 1879.Table 6 . BIPM. Retrieved on 2011-07-10. Its use is also official for the metric ton in the United States, having been adopted by the United States |
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ceded Hong Kong Island in 1841–1842 as a consequence of losing the First Opium War. The colony expanded to the Kowloon Peninsula in 1860 and was further extended when the United Kingdom obtained a 99-year lease of the New Territories in 1898. Hong Kong was occupied by Japan from 1941 to 1945 during World War II. The territory was handed over from the United Kingdom to China in 1997. Hong Kong maintains separate governing and economic systems from that of mainland China under the principle of one country, two systems. Originally a sparsely populated area of farming and fishing villages,. the territory is now one of the world's most signific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capesize
Capesize ships are the largest dry cargo ships with ball mark dimension: about 170,000 DWT (deadweight tonnage) capacity, long, beam (wide), draught (under water depth). They are too large to transit the Suez Canal ( Suezmax limits) or Panama Canal ( Neopanamax limits), and so have to pass either Cape Agulhas or Cape Horn to traverse between oceans. When the Suez Canal was deepened in 2009, it became possible for some capesize ships to transit the canal and so change categories. Routes Major capesize bulk trade routes include: Brazil to China, Australia to China, South Africa to China and South Africa to Europe. Classification Ships in this class are bulk carriers, usually transporting coal, ore and other commodity raw materials. The term ''capesize'' is not applied to tankers. The average size of a capesize bulker is around 156,000 DWT, although larger ships (normally dedicated to ore transportation) have been built, up to 400,000 DWT. The large d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
