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HMS Vengeance (S31)
HMS ''Vengeance'' is the fourth and final of the Royal Navy. ''Vengeance'' carries the Trident ballistic missile, the UK's nuclear deterrent. ''Vengeance'' was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering Ltd, later BAE Systems Submarine Solutions, was launched in September 1998, and commissioned in November 1999. Before she was commissioned, the British Government stated that once the ''Vanguard'' submarines became fully operational, they would only carry 200 warheads. ''Vengeance'' carries unopened "last instructions" ( letters of last resort) of the current British Prime Minister that are to be used in the event of a national catastrophe or a nuclear strike; this letter is identical to the letters carried on board the other three submarines of the ''Vanguard'' class. Operational history On 31 March 2011, while on a training exercise ''Vengeance'' suffered a blockage in her propulsor causing a reduction in propulsion. The boat returned to Fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Warhead
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to . The first thermonuclear ("hydrogen") bomb test released energy approximately equal to . Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing as little as can release energy equal to more than . A nuclear device no larger than a conventional bomb can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy. Nuclear weapons have been dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propulsor
{{short description, Mechanical device to propel a vessel A propulsor is a mechanical device that gives propulsion. The word is commonly used in the marine vernacular, and implies a mechanical assembly that is more complicated than a propeller. The Kort nozzle, pump-jet and rim-driven thruster are examples. An example propulsor is shown in the accompanying picture. It has a shroud which cuts down on blade-tip cavitation and radiated noise. It also has a rotor element and a stator. The stator concentrates the thrust in axial direction and reduces energy wasted in the tangential flow (therefore eliminating torque on the hull). The number of blades in the rotor and stator will typically be two different prime numbers to avoid standing waves. The blades in the rotor or the stator may be angled to further reduce noise. The physical design and layout is very much similar to a single stage axial-flow compressor. Other propulsors Voith Schneider The Voith Schneider Propeller, also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio 4
BBC Radio 4 is a British national radio station owned and operated by the BBC that replaced the BBC Home Service in 1967. It broadcasts a wide variety of Talk radio, spoken-word programmes, including news, drama, comedy, science and history from the BBC's headquarters at Broadcasting House, London. The station controller is Mohit Bakaya. Broadcasting throughout the United Kingdom, the Isle of Man and the Channel Islands on FM broadcast band, FM, Longwave, LW and Digital Audio Broadcasting, DAB, and on BBC Sounds, it can be received in the eastern counties of Republic of Ireland, Ireland, northern France and Northern Europe. It is available on Freeview (UK), Freeview, Sky (UK & Ireland), Sky, and Virgin Media. Radio 4 currently reaches over 10 million listeners, making it the UK's second most-popular radio station after BBC Radio 2, Radio 2. BBC Radio 4 broadcasts news programmes such as ''Today (BBC Radio 4), Today'' and ''The World at One'', heralded on air by the Greenwich Ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Warfare
Nuclear warfare, also known as atomic warfare, is a theoretical military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nuclear warfare can produce destruction in a much shorter time and can have a long-lasting radiological result. A major nuclear exchange would likely have long-term effects, primarily from the fallout released, and could also lead to secondary effects, such as " nuclear winter", nuclear famine and societal collapse. A global thermonuclear war with Cold War-era stockpiles, or even with the current smaller stockpiles, may lead to various scenarios including the extinction of the human race. To date, the only use of nuclear weapons in armed conflict occurred in 1945 with the American atomic bombings of Hiroshima and Nagasaki. On August 6, 1945, a uranium gun-type device (code name "Little Boy") was detonated over the Japanese city of Hir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prime Minister
A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not the head of state, but rather the head of government, serving under either a monarch in a democratic constitutional monarchy or under a president in a republican form of government. In parliamentary systems fashioned after the Westminster system, the prime minister is the presiding and actual head of government and head/owner of the executive power. In such systems, the head of state or their official representative (e.g., monarch, president, governor-general) usually holds a largely ceremonial position, although often with reserve powers. Under some presidential systems, such as South Korea and Peru, the prime minister is the leader or most senior member of the cabinet, not the head of government. In many systems, the prime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letters Of Last Resort
The letters of last resort are four identically-worded handwritten letters from the prime minister of the United Kingdom to the commanding officers of the four British ballistic missile submarines. They contain orders on what action to take if an enemy nuclear strike has destroyed the British government, and has killed or otherwise incapacitated both the prime minister and their designated "second person", typically a high-ranking member of the Cabinet, such as the deputy prime minister or the first secretary of state, to whom the prime minister has designated the responsibility of choosing how to act, if they die in office. If the orders are carried out, the action taken could be the last official act of the United Kingdom. If the letters are not used during the term of the prime minister who wrote them, they are destroyed unopened after that person leaves office, so that their content remains unknown to anyone except the issuer. Process A new prime minister writes a set of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Commissioning
Ship commissioning is the act or ceremony of placing a ship in active service and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to placing a warship in active duty with its country's military forces. The ceremonies involved are often rooted in centuries-old naval tradition. Ship naming and launching endow a ship hull with her identity, but many milestones remain before she is completed and considered ready to be designated a commissioned ship. The engineering plant, weapon and electronic systems, galley, and other equipment required to transform the new hull into an operating and habitable warship are installed and tested. The prospective commanding officer, ship's officers, the petty officers, and seamen who will form the crew report for training and familiarization with their new ship. Before commissioning, the new ship undergoes sea trials to identify any deficiencies needing c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Naming And Launching
Ceremonial ship launching involves the performance of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back thousands of years, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself. Ship launching imposes stresses on the ship not met during normal operation and, in addition to the size and weight of the vessel, represents a considerable engineering challenge as well as a public spectacle. The process also involves many traditions intended to invite good luck, such as christening by breaking a sacrificial bottle of champagne over the bow as the ship is named aloud and launched. Methods There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching". The oldest, most familiar, and most widely used is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BAE Systems Submarine Solutions
BAE Systems Submarines,BAE Systems Submarine Solutions was split out from BAE Systems Marine and operated as such until January 2012. It was named BAE Systems Maritime - Submarines until 2017 before it became BAE Systems Submarines. is a wholly owned subsidiary of BAE Systems, based in Barrow-in-Furness, Cumbria, England, and is responsible for the development and production of submarines. It operates one of the few shipyards in the world capable of designing and building nuclear submarines, which has constructed all but three of the Royal Navy's nuclear-powered submarines since the commissioning of in 1963. History BAE Systems Submarines operates one of the few shipyards in the world capable of designing and building nuclear submarines, which has constructed all but three of the Royal Navy's nuclear-powered submarines since the commissioning of in 1963. The exceptions were , and , which were built by Cammell Laird. The Barrow-in-Furness shipyard has also been buildi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vickers Shipbuilding And Engineering Ltd
Vickers Shipbuilding and Engineering, Ltd (VSEL) was a shipbuilding company based at Barrow-in-Furness, Cumbria in northwest England that built warships, civilian ships, submarines and armaments. The company was historically the Naval Construction Works of Vickers Armstrongs and has a heritage of building large naval warships and armaments. Through a complicated history the company's shipbuilding division is now BAE Systems Submarine Solutions and the armaments division is now part of BAE Systems Land & Armaments. History The company was founded in 1871 by James Ramsden as the Iron Shipbuilding Company, but its name was soon changed to Barrow Shipbuilding Company. In 1897, ''Vickers & Sons'' bought the ''Barrow Shipbuilding Company'' and its subsidiary the ''Maxim Nordenfelt Guns and Ammunition Company'', becoming ''Vickers, Sons and Maxim, Limited''. The shipyard at Barrow became the Naval Construction & Armaments Company. In 1911 the company was renamed ''Vickers Ltd'', an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrow-in-Furness
Barrow-in-Furness is a port town in Cumbria, England. Historically in Lancashire, it was incorporated as a municipal borough in 1867 and merged with Dalton-in-Furness Urban District in 1974 to form the Borough of Barrow-in-Furness. In 2023 the borough will merge with Eden and South Lakeland districts to form a new unitary authority; Westmorland and Furness. At the tip of the Furness peninsula, close to the Lake District, it is bordered by Morecambe Bay, the Duddon Estuary and the Irish Sea. In 2011, Barrow's population was 56,745, making it the second largest urban area in Cumbria after Carlisle. Natives of Barrow, as well as the local dialect, are known as Barrovian. In the Middle Ages, Barrow was a small hamlet within the parish of Dalton-in-Furness with Furness Abbey, now on the outskirts of the town, controlling the local economy before its dissolution in 1537. The iron prospector Henry Schneider arrived in Furness in 1839 and, with other investors, opened th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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