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Revenge-class Battleship
The ''Revenge'' class, sometimes referred to as the ''Royal Sovereign'' class or the R class, consisted of five superdreadnought battleships built for the Royal Navy in the 1910s. All of the ships were completed to see service during the First World War. There were originally to have been eight of the class, but two were later redesigned, becoming the s, while the other, which was to have been named HMS ''Resistance'', was cancelled outright. The design was based on that of the preceding , but with reductions in size and speed to make them more economical to build. Two of the ships, and , were completed in time to see action at the Battle of Jutland during the First World War, where they engaged German battlecruisers. The other three ships were completed after the battle, by which time the British and German fleets had adopted more cautious strategies, and as a result, the class saw no further substantial action. During the early 1920s, the ships were involved in the Greco-T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulkhead (partition)
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an airplane. Other kinds of partition elements within a ship are decks and deckheads. Etymology The word ''bulki'' meant "cargo" in Old Norse. During the 15th century sailors and builders in Europe realized that walls within a vessel would prevent cargo from shifting during passage. In shipbuilding, any vertical panel was called a head. So walls installed abeam (side-to-side) in a vessel's hull were called "bulkheads". Now, the term bulkhead applies to every vertical panel aboard a ship, except for the hull itself. History Bulkhead partitions are considered to have been a feature of Chinese junks, a type of ship. Song Dynasty author Zhu Yu (fl. 12th century) wrote in his book of 1119 that the hulls of Chinese ships had a bulkhead build. The 5th-century book ''Garden of Strange Things'' by Liu Jingshu mentioned that a ship could allow water to enter the bottom without sinking. Archaeolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scapa Flow
Scapa Flow viewed from its eastern end in June 2009 Scapa Flow (; ) is a body of water in the Orkney Islands, Scotland, sheltered by the islands of Mainland, Graemsay, Burray,S. C. George, ''Jutland to Junkyard'', 1973. South Ronaldsay and Hoy. Its sheltered waters have played an important role in travel, trade and conflict throughout the centuries. Vikings anchored their longships in Scapa Flow more than a thousand years ago. It was the United Kingdom's chief naval base during the First and Second World Wars, but the facility was closed in 1956. Scapa Flow has a shallow sandy bottom not deeper than and most of it is about deep; it is one of the great natural harbours and anchorages of the world, with sufficient space to hold a number of navies. The harbour has an area of and contains just under 1 billion cubic metres of water. Since the scuttling of the German fleet after World War I, its wrecks and their marine habitats form an internationally acclaimed diving lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Gunfire Support
Naval gunfire support (NGFS) (also known as shore bombardment) is the use of naval artillery to provide fire support for amphibious assault and other troops operating within their range. NGFS is one of a number of disciplines encompassed by the term ''naval fires''. Modern naval gunfire support is one of the three main components of amphibious warfare assault operations support, along with aircraft and ship-launched land-attack missiles. Shipborne guns have been used against shore defences since medieval naval warfare. Tactics NGFS is classified into two types: direct fire, where the ship has line of sight with the target (either visually or through the use of radar), and indirect fire, which, to be accurate, requires an artillery observer to adjust fire. When on the gun line, ships are particularly vulnerable to attack from aircraft coming from a landward direction and flying low to avoid radar detection, or from submarines due to a predictable and steady (non-evasive) cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Gun Fire-control System
Ship gun fire-control systems (GFCS) are analogue fire-control systems that were used aboard naval warships prior to modern electronic computerized systems, to control targeting of guns against surface ships, aircraft, and shore targets, with either optical or radar sighting. Most US ships that are destroyers or larger (but not destroyer escorts except Brooke class DEG's later designated FFG's or escort carriers) employed gun fire-control systems for and larger guns, up to battleships, such as . Beginning with ships built in the 1960s, warship guns were largely operated by computerized systems, i.e. systems that were controlled by electronic computers, which were integrated with the ship's missile fire-control systems and other ship sensors. As technology advanced, many of these functions were eventually handled fully by central electronic computers. The major components of a gun fire-control system are a human-controlled director, along with or later replaced by radar or te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Fleet (United Kingdom)
The Atlantic Fleet was a naval fleet of the Royal Navy. It existed for two separate periods; 1909 until 1914, and then 1919 until 1932. History On 14 December 1904 the Channel Fleet was re-styled the 'Atlantic Fleet'.National Archives records The Atlantic Fleet lasted until 1912 when rising tensions with Germany forced the Royal Navy to relook at fleet formations and the Atlantic Fleet became the 3rd Battle Squadron. The Atlantic Fleet was based at Gibraltar to reinforce either the Channel Fleet or the Mediterranean Fleet, from January 1905 to February 1907. It remained at Gibraltar until April 1912. The Atlantic Fleet was again formed after the end of World War I, when British naval forces were reorganised to reflect the changed economic and political situation in Europe. The fleet was created upon the disbandment of the Grand Fleet in April 1919, absorbing many, but not all of its elements. It was placed under a Commander-in-Chief, who for part of that year held the title of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interwar Period
In the history of the 20th century, the interwar period lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days), the end of the World War I, First World War to the beginning of the World War II, Second World War. The interwar period was relatively short, yet featured many significant social, political, and economic changes throughout the world. Petroleum-based energy production and associated mechanisation led to the prosperous Roaring Twenties, a time of both social mobility and economic mobility for the middle class. Automobiles, electric lighting, radio, and more became common among populations in the developed world. The indulgences of the era subsequently were followed by the Great Depression, an unprecedented worldwide economic downturn that severely damaged many of the world's largest economies. Politically, the era coincided with the rise of communism, starting in Russia with the October Revolution and Russian Civil War, at the end of World War I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean Fleet
The British Mediterranean Fleet, also known as the Mediterranean Station, was a formation of the Royal Navy. The Fleet was one of the most prestigious commands in the navy for the majority of its history, defending the vital sea link between the United Kingdom and the majority of the British Empire in the Eastern Hemisphere. The first Commander-in-Chief for the Mediterranean Fleet was the appointment of General at Sea Robert Blake in September 1654 (styled as Commander of the Mediterranean Fleet). The Fleet was in existence until 1967. Pre-Second World War The Royal Navy gained a foothold in the Mediterranean Sea when Gibraltar was captured by the British in 1704 during the War of Spanish Succession, and formally allocated to Britain in the 1713 Treaty of Utrecht. Though the British had maintained a naval presence in the Mediterranean before, the capture of Gibraltar allowed the British to establish their first naval base there. The British also used Port Mahon, on the isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Civil War
, date = October Revolution, 7 November 1917 – Yakut revolt, 16 June 1923{{Efn, The main phase ended on 25 October 1922. Revolt against the Bolsheviks continued Basmachi movement, in Central Asia and Tungus Republic, the Far East through the 1920s and 1930s.{{cite book, last=Mawdsley, first=Evan, title=The Russian Civil War, location=New York, publisher=Pegasus Books, year=2007, isbn=9781681770093, url=https://archive.org/details/russiancivilwar00evan, url-access=registration{{rp, 3,230(5 years, 7 months and 9 days) {{Collapsible list , bullets = yes , title = Peace treaties , Treaty of Brest-LitovskSigned 3 March 1918({{Age in years, months, weeks and days, month1=11, day1=7, year1=1917, month2=3, day2=3, year2=1918) , Treaty of Tartu (Russian–Estonian)Signed 2 February 1920({{Age in years, months, weeks and days, month1=11, day1=7, year1=1917, month2=2, day2=2, year2=1920) , Soviet–Lithuanian Peace TreatySigned 12 July 1920({{Age in years, months, weeks and da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greco-Turkish War (1919–1922)
The Greco-Turkish War of 1919–1922, ota, گرب جابهاسی, Garb Cebhesi) in Turkey, and the Asia Minor Campaign ( el, Μικρασιατική Εκστρατεία, Mikrasiatikí Ekstrateía) or the Asia Minor Catastrophe ( el, Μικρασιατική Καταστροφή, Mikrasiatikí Katastrofí) in Greece. Also referred to as the Greek invasion of Anatolia., group=lower-alpha was fought between Kingdom of Greece (Glücksburg), Greece and the Turkish National Movement during the partitioning of the Ottoman Empire in the aftermath of World War I, between May 1919 and October 1922. The Greek campaign was launched primarily because the western Allies of World War I, Allies, particularly Prime Minister of the United Kingdom, British Prime Minister David Lloyd George, had promised Greece territorial gains at the expense of the Ottoman Empire, recently defeated in World War I. Greek claims stemmed from the fact that Anatolia had been part of Ancient Greece and the Byzant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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