|
Floating Batteries
A floating battery is a kind of armed watercraft, often improvised or experimental, which carries heavy armament but has few other qualities as a warship. History Use of timber rafts loaded with cannon by Danish defenders of Copenhagen against bomb ketches of a combined British-Dutch-Swedish fleet is attested by Nathaniel Uring in 1700. An early appearance was in 1782 at the Great Siege of Gibraltar, and its invention and usage is attributed to Spanish Lieutenant General Antonio Barceló. A purpose-built floating battery was ''Flådebatteri No. 1'', designed by Chief Engineer Henrik Gerner in 1787; it was long, wide and armed with 24 guns, and was used during the 1801 battle of Copenhagen (1801), Battle of Copenhagen under the command of Peter Willemoes. The British made limited use of floating batteries during the French Revolutionary Wars, French Revolutionary and Napoleonic Wars, with the two-vessel and -class floating batteries, and some individual vessels such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Cycle Battery
A deep-cycle battery is a battery designed to be regularly deeply discharged using most of its capacity. The term is traditionally mainly used for lead–acid batteries in the same form factor as automotive batteries; and contrasted with starter or 'cranking' automotive batteries designed to deliver only a small part of their capacity in a short, high-current burst for cranking the engine. For lead-acid deep-cycle batteries there is an inverse correlation between the depth of discharge (DOD) of the battery and the number of charge and discharge cycles it can perform; with an average "depth of discharge" of around 50% suggested as the best for storage vs cost. Newer technologies than the traditional lead-acid (such as lithium-ion batteries) are becoming commonplace in smaller sizes in uses such as smartphones and laptops. The new technologies are also beginning to become common in the same form factor as the automotive lead-acid batteries, although at a large price premium. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York Harbor
New York Harbor is at the mouth of the Hudson River where it empties into New York Bay near the East River tidal estuary, and then into the Atlantic Ocean on the east coast of the United States. It is one of the largest natural harbors in the world, and is frequently named the best natural harbor in the world. It is also known as Upper New York Bay, which is enclosed by the New York City boroughs of Manhattan, Brooklyn, and Staten Island and the Hudson County, New Jersey municipalities of Jersey City and Bayonne. The name may also refer to the entirety of New York Bay including Lower New York Bay. Although the United States Board on Geographic Names does not use the term, ''New York Harbor'' has important historical, governmental, commercial, and ecological usages. Overview The harbor is fed by the waters of the Hudson River (historically called the North River as it passes Manhattan), as well as the Gowanus Canal. It is connected to Lower New York Bay by the Narrows, to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Confederate States Of America
The Confederate States of America (CSA), commonly referred to as the Confederate States or the Confederacy was an unrecognized breakaway republic in the Southern United States that existed from February 8, 1861, to May 9, 1865. The Confederacy comprised U.S. states that declared secession and warred against the United States during the American Civil War: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas, Virginia, Arkansas, Tennessee, and North Carolina. Kentucky and Missouri also declared secession and had full representation in the Confederate Congress, though their territory was largely controlled by Union forces. The Confederacy was formed on February 8, 1861, by seven slave states: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas. All seven were in the Deep South region of the United States, whose economy was heavily dependent upon agriculture—particularly cotton—and a plantation system that relied upon enslaved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union (American Civil War)
During the American Civil War, the Union, also known as the North, referred to the United States led by President Abraham Lincoln. It was opposed by the secessionist Confederate States of America (CSA), informally called "the Confederacy" or "the South". The Union is named after its declared goal of preserving the United States as a constitutional union. "Union" is used in the U.S. Constitution to refer to the founding formation of the people, and to the states in union. In the context of the Civil War, it has also often been used as a synonym for "the northern states loyal to the United States government;" in this meaning, the Union consisted of 20 free states and five border states. The Union Army was a new formation comprising mostly state units, together with units from the regular U.S. Army. The border states were essential as a supply base for the Union invasion of the Confederacy, and Lincoln realized he could not win the war without control of them, especially Maryla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bastion
A bastion or bulwark is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort. The fully developed bastion consists of two faces and two flanks, with fire from the flanks being able to protect the curtain wall and the adjacent bastions. Compared with the medieval fortified towers they replaced, bastion fortifications offered a greater degree of passive resistance and more scope for ranged defence in the age of gunpowder artillery. As military architecture, the bastion is one element in the style of fortification dominant from the mid 16th to mid 19th centuries. Evolution By the middle of the 15th century, artillery pieces had become powerful enough to make the traditional medieval round tower and curtain wall obsolete. This was exemplified by the campaigns of Charles VII of France who reduced the towns and castles held by the English during the latter stages of the Hundred Years War, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banjarmasin War
The Banjarmasin War (in old spelling ''Bandjermasin War'', Dutch: ''Bandjermasinse Oorlog'', or formally ''Expeditie naar de Zuider- en Oosterafdeling van Borneo'') (1859–1863) was a war of succession in the Sultanate of Banjarmasin, as well as a colonial war for the restoration of Dutch authority in the eastern and southern section of Borneo. Background 17th century Since 1606 the East United India Company maintained contacts with the island of Borneo. In 1635 the first contract was signed with the Sultanate of Banjarmasin for the provision of pepper - at the time, a luxury product in Europe and a major reason for the Dutch interest in this region. In following decades there were several skirmishes and armed clashes, especially related to such pepper contracts being unfulfilled. One of the most serious was the 1638 killing of 64 Dutch and 21 of their Japanese partners, at Kota Waring in Bandjermasin. Early 19th century In 1809 Herman Willem Daendels, then governor o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dayak People
The Dayak (; older spelling: Dajak) or Dyak or Dayuh are one of the native groups of Borneo. It is a loose term for over 200 riverine and hill-dwelling ethnic groups, located principally in the central and southern interior of Borneo, each with its own dialect, customs, laws, territory, and culture, although common distinguishing traits are readily identifiable. Dayak languages are categorised as part of the Austronesian languages. The Dayak were animist (Kaharingan and Folk Hindus) in belief; however, since the 19th century there has been mass conversion to Christianity as well as Islam due to the spreading of Abrahamic religions. Etymology It is commonly assumed that the name originates from the Bruneian and Melanau word for “interior people”, without any reference to an exact ethnic group. The term was adopted by Dutch and German authors as an umbrella term for any non-Muslim natives of Borneo. Thus, the difference between Dayaks and non-Dayaks natives could be un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banjar People
The Banjar or Banjarese ( bjn, Urang Banjar; ) are an indigenous ethnic group native to the Banjar regions (notably Banjarmasin, Banjarbaru, Banjar Regency, etc.) in the southeastern Kalimantan hemisphere of Indonesia. Nowadays, Banjarese diaspora can be found in neigbouring Banjar regions as well; including Kotabaru Regency, the southeastern regions of Central Kalimantan, southernmost regions of East Kalimantan, and some provinces of Indonesia in general. The Banjarese diaspora community also can be found in neighbouring countries of Indonesia, such as Brunei, Malaysia (notably in Sabah and Perak), and Singapore. Etymology Etymologically, the word ''Banjar'' is derived from terminology in the Janyawai dialect of Ma'anyan language, which rooted from Old Javanese language. It is initially used to identified the Ma'anyan, Meratus Dayak, and Ngaju people who are already "Javanized" when the Javanese people arrived in southeastern Kalimantan regions to established their ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kotta Mara
Kotta mara is a type of floating battery or fortified raft from Borneo. It is used by native Bornean ( Banjarese and Dayak) in warfare, its usage rose prominently during the Banjarmasin war (1859–1906). Kotta mara is used in riverine warfare, as an armed vessel or simply a blockhouse or fortification to prevent enemy advance in the river. Etymology The word ''kotta'' comes from Malay word ''kota'' which in turn comes from the Sanskrit word कोट्ट (kota) which means fort, fortress, castle, fortified house, fortification, works, city, town, or place encircled by walls. ''Mara'' likely a corruption of Malay word ''muara'' which means estuary, thus the name ''kotta'' ''mara'' means estuary fort. In various publications it is also written as kotta-mara, kota mara, kotamara, and cotta mara. In Indonesian sources it is known as lanting kotamara, with the word “''lanting''” meaning raft house, a traditional Banjar floating house. According to the Great Indonesian Dictio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kronstadt
Kronstadt (russian: Кроншта́дт, Kronshtadt ), also spelled Kronshtadt, Cronstadt or Kronštádt (from german: link=no, Krone for "crown" and ''Stadt'' for "city") is a Russian port city in Kronshtadtsky District of the federal city of Saint Petersburg, located on Kotlin Island, west of Saint Petersburg, near the head of the Gulf of Finland. It is linked to the former Russian capital by a combination levee-causeway-seagate, the St Petersburg Dam, part of the city's flood defences, which also acts as road access to Kotlin island from the mainland. Founded in the early 18th century by Peter the Great, it became an important international centre of commerce whose trade role was later eclipsed by its strategic significance as the primary maritime defence outpost of the former Russian capital. Kaplan, 1995 The main base of the Russian Baltic Fleet was located in Kronstadt, guarding the approaches to Saint Petersburg. In March 1921, the island city was the site of the Krons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Sea
The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from 10°E to 30°E longitude. A marginal sea of the Atlantic, with limited water exchange between the two water bodies, the Baltic Sea drains through the Danish Straits into the Kattegat by way of the Øresund, Great Belt and Little Belt. It includes the Gulf of Bothnia, the Bay of Bothnia, the Gulf of Finland, the Gulf of Riga and the Bay of Gdańsk. The " Baltic Proper" is bordered on its northern edge, at latitude 60°N, by Åland and the Gulf of Bothnia, on its northeastern edge by the Gulf of Finland, on its eastern edge by the Gulf of Riga, and in the west by the Swedish part of the southern Scandinavian Peninsula. The Baltic Sea is connected by artificial waterways to the White Sea via the White Sea–Baltic Canal and to the German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Sea
The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. The Black Sea is supplied by major rivers, principally the Danube, Dnieper, and Don. Consequently, while six countries have a coastline on the sea, its drainage basin includes parts of 24 countries in Europe. The Black Sea covers (not including the Sea of Azov), has a maximum depth of , and a volume of . Most of its coasts ascend rapidly. These rises are the Pontic Mountains to the south, bar the southwest-facing peninsulas, the Caucasus Mountains to the east, and the Crimean Mountains to the mid-north. In the west, the coast is generally small floodplains below foothills such as the Strandzha; Cape Emine, a dwindling of the east end of the Balkan Mountains; and the Dobruja Plateau considerably farth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Bastion")
