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Boom (navigational Barrier)
A boom or a chain (also boom defence, harbour chain, river chain, chain boom, boom chain or variants) is an obstacle strung across a navigable stretch of water to control or block navigation. In modern times they usually have civil uses, such as to prevent access to a dangerous river channel. But, especially historically, they have been used militarily, with the goal of denying access to an enemy's ships: a modern example is the anti-submarine net. Booms have also been used to force passing vessels to pay a toll. Description A boom generally floats on the surface, while a chain can be on the surface or below the water. A chain could be made to float with rafts, logs, ships or other wood, making the chain a boom as well. Historical uses Especially in medieval times, the end of a chain could be attached to a chain tower or boom tower. This allowed safe raising or lowering of the chain, as they were often heavily fortified. By raising or lowering a chain or boom, access could be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siege Of Londonderry Boom Detail
A siege is a military blockade of a city, or fortress, with the intent of conquering by attrition, or a well-prepared assault. This derives from la, sedere, lit=to sit. Siege warfare is a form of constant, low-intensity conflict characterized by one party holding a strong, static, defensive position. Consequently, an opportunity for negotiation between combatants is common, as proximity and fluctuating advantage can encourage diplomacy. The art of conducting and resisting sieges is called siege warfare, siegecraft, or poliorcetics. A siege occurs when an attacker encounters a city or fortress that cannot be easily taken by a quick assault, and which refuses to surrender. Sieges involve surrounding the target to block the provision of supplies and the reinforcement or escape of troops (a tactic known as " investment"). This is typically coupled with attempts to reduce the fortifications by means of siege engines, artillery bombardment, mining (also known as sapping), or the us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoeburyness Boom
The Shoeburyness Boom (also known as the Sheerness Boom, Thames Boom or Thames Estuary Boom) refers to two successive defensive barriers across most of the Thames Estuary in the mid-20th century. As to the part perpendicular to the north shore most of the latter incarnation remains, and its nearest concrete mooring/patrol point 600 metres south. A 2 km (2,200 yard) stretch, this is designated a scheduled monument and marks the western edge of MoD Shoeburyness firing range, a restricted area. The rest was taken up in the 1960s. The first guise was built in late 1939, the first months of the Second World War, mainly to protect shipping and the capital from attack by submarines, mines and surface vessels. It was dismantled. The second was built between 1950 and 1953 to forestall access to the estuary by Soviet submarines during the Cold War. Both booms ran most of the way from Shoeburyness in Essex to Sheerness in Kent: 5.6 miles (9.0 km). The first guise consisted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri
Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas to the south and Oklahoma, Kansas and Nebraska to the west. In the south are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Missouri River, after which the state is named, flows through the center into the Mississippi River, which makes up the eastern border. With more than six million residents, it is the 19th-most populous state of the country. The largest urban areas are St. Louis, Kansas City, Springfield and Columbia; the capital is Jefferson City. Humans have inhabited what is now Missouri for at least 12,000 years. The Mississippian culture, which emerged at least in the ninth century, built cities and mounds before declining in the 14th century. When European explorers arrived in the 17th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mississippi River
The Mississippi River is the second-longest river and chief river of the second-largest drainage system in North America, second only to the Hudson Bay drainage system. From its traditional source of Lake Itasca in northern Minnesota, it flows generally south for to the Mississippi River Delta in the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains all or parts of 32 U.S. states and two Canadian provinces between the Rocky and Appalachian mountains. The main stem is entirely within the United States; the total drainage basin is , of which only about one percent is in Canada. The Mississippi ranks as the thirteenth-largest river by discharge in the world. The river either borders or passes through the states of Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana. Native Americans have lived along the Mississippi River and its tributaries for thousands of years. Most were hunter-gathere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbus, Kentucky
Columbus is a home rule-class city in Hickman County, Kentucky, in the United States. The population was 170 at the 2010 census, a decline from 229 in 2000. The city lies at the western end of the state, less than a mile from the Mississippi River. Columbus-Belmont State Park borders the city to the west. History Columbus is the oldest town in Kentucky's Jackson Purchase. It was first settled on the Mississippi floodplain in 1804 and known as "Iron Banks" after the site's French name ''les rivages de fer''.Rennick, Robert M. Kentucky Place Names'. The University Press of Kentucky (Lexington), 1988. . The long-held local rumor that President Thomas Jefferson planned to remove the American capital to the site has absolutely no basis in fact. The name of the town was changed to Columbus in 1820 (in honor of the Italian explorer), the year the town received its first post office and was formally established by the state assembly. It was the original Hickman County seat befor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Vuelta De Obligado
The naval Battle of Vuelta de Obligado took place on the waters of the Paraná River on 20 November 1845, between the Argentine Confederation, under the leadership of Juan Manuel de Rosas, and a combined Anglo-French fleet. The action was part of the larger Anglo-French blockade of the RÃo de la Plata. Although the attacking forces broke through the Argentine naval defenses and overran the land defenses, the battle proved that foreign ships could not safely navigate Argentine internal waters against its government's wishes. The battle also changed the political attitude toward the Confederation in South America, increasing support for Rosas and his government. Background During the 1830s and 1840s, the British and French governments were at odds with Juan Manuel de Rosas' leadership of the Argentine Confederation. Rosas' economic policies of requiring trade to pass through the Buenos Aires custom house – which was his method of imposing his will on the Littoral provinces †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raid On The Medway
The Raid on the Medway, during the Second Anglo-Dutch War in June 1667, was a successful attack conducted by the Dutch navy on English warships laid up in the fleet anchorages off Chatham Dockyard and Gillingham in the county of Kent. At the time, the fortress of Upnor Castle and a barrier chain called the "Gillingham Line" were supposed to protect the English ships. The Dutch, under nominal command of Willem Joseph van Ghent and Lieutenant-Admiral Michiel de Ruyter, over several days bombarded and captured the town of Sheerness, sailed up the Thames estuary to Gravesend, then sailed into the River Medway to Chatham and Gillingham, where they engaged fortifications with cannon fire, burned or captured three capital ships and ten more ships of the line, and captured and towed away the flagship of the English fleet, . Politically, the raid was disastrous for King Charles' war plans and led to a quick end to the war and a favourable peace for the Dutch. It was one of the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Medway
The River Medway is a river in South East England. It rises in the High Weald, East Sussex and flows through Tonbridge, Maidstone and the Medway conurbation in Kent, before emptying into the Thames Estuary near Sheerness, a total distance of . About of the river lies in East Sussex, with the remainder being in Kent. It has a catchment area of , the second largest in southern England after the Thames. The map opposite shows only the major tributaries: a more detailed map shows the extensive network of smaller streams feeding into the main river. Those tributaries rise from points along the North Downs, the Weald and Ashdown Forest. Tributaries The major tributaries are: * River Eden * River Bourne, known in the past as the Shode or Busty * River Teise, major sub-tributary River Bewl * River Beult * Loose Stream * River Len Minor tributaries include: * Wateringbury Stream * East Malling Stream * River Grom Former minor tributaries include the Old Bourne River ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiber
The Tiber ( ; it, Tevere ; la, Tiberis) is the third-longest List of rivers of Italy, river in Italy and the longest in Central Italy, rising in the Apennine Mountains in Emilia-Romagna and flowing through Tuscany, Umbria, and Lazio, where it is joined by the River Aniene, to the Tyrrhenian Sea, between Ostia (Rome), Ostia and Fiumicino. It Drainage basin, drains a basin estimated at . The river has achieved lasting fame as the main watercourse of the city of Rome, which was founded on its eastern banks. The river rises at Mount Fumaiolo in central Italy and flows in a generally southerly direction past Perugia and Rome to meet the sea at Ostia (town), Ostia. Known in ancient times (in Latin) as ''Wikt:flavus, flavus'' ("the blond"), in reference to the yellowish colour of its water, the Tiber has advanced significantly at its mouth, by about , since Roman times, leaving the ancient port of Ostia Antica (archaeological site), Ostia Antica inland."Tiber River". ''Encyclopæ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonine Wall
Leonine may refer to: Lions * Leonine facies, a face that resembles that of a lion Popes Leo * Leonine City, a part of the city of Rome * Leonine College, a college for priests in training, in Rome, Italy * Leonine Prayers, a set of prayers that from 1884 to early 1965 were prescribed by the Popes for recitation after Low Mass * Leonine Sacramentary, a manuscript written in the seventh century Other * Leonine (coin), a coin minted in Europe and used in England as a debased form of the sterling silver penny, outlawed under Edward I * Leonine verse, a type of Latin versification based on internal rhyme * Leonine, a minor character in Shakespeare's ''Pericles, Prince of Tyre'' * Leonine Holding, formerly Tele München Group, is a media company based in Munich owned by KKR See also * Lenine (other) Lenine may refer to: *Lenine (musician), Brazilian singer-songwriter * Lenine, Crimea, an urban-type settlement on the Crimean Peninsula *Lenine Raion, a district of Crimea *L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portsmouth Harbour
Portsmouth Harbour is a biological Site of Special Scientific Interest between Portsmouth and Gosport in Hampshire. It is a Ramsar site and a Special Protection Area. It is a large natural harbour in Hampshire, England. Geographically it is a ria: formerly it was the valley of a stream flowing from Portsdown into the Solent. At its north end is Portchester Castle, of Roman origin and the first fortress built to protect the harbour. The mouth of the harbour provides access to the Solent. It is best known as the home of the Royal Navy, HMNB Portsmouth. Because of its strategic location on the south coast of England, protected by the natural defence of the Isle of Wight, it has since the Middle Ages been the home to England's (and later Britain's) navy. The narrow entrance, and the forts surrounding it gave it a considerable advantage of being virtually impregnable to attack from the sea. Before the fortifications were built the French burned Portsmouth in 1338. Durin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
