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HMS Christopher (1912)
HMS ''Christopher'' was an (also known as the K class) of the British Royal Navy. She was built by Hawthorn Leslie in 1911–1912. She served throughout the First World War, forming part of the Grand Fleet until 1916 and taking part in the Battle of Jutland. Later in the war she served in the English Channel to protect merchant shipping against attacks by German U-boats. ''Christopher'' was sold for scrap in May 1921. Construction and design ''Christopher'' was one of three s ordered by the British Admiralty from the Hawthorn Leslie shipyard under the 1911–1912 shipbuilding programme, with a total of 20 ''Acasta''s (12, including ''Christopher'' to the standard Admiralty design and eight more as builder's specials). The ''Acasta''s were larger and more powerful than the s ordered under the previous year's programme. Greater speed was wanted to match large fast destroyers building for foreign navies, while a larger radius of action was desired. The destroyers built to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawthorn Leslie
R. & W. Hawthorn, Leslie and Company, Limited, usually referred to as Hawthorn Leslie, was a shipbuilder and locomotive manufacturer. The company was founded on Tyneside in 1886 and ceased building ships in 1982. History The company was formed by the merger of the shipbuilder A. Leslie and Company in Hebburn with the locomotive works of R and W Hawthorn at St. Peter's in Newcastle upon Tyne in 1886. The company displaced its locomotive manufacturing interests in 1937 to Robert Stephenson and Company, which became '' Robert Stephenson and Hawthorns Ltd.'' Perhaps the most famous ship built by the Company was HMS ''Kelly'', launched in 1938 and commanded by Lord Louis Mountbatten. In 1954, the shipbuilding and marine engine activities were put into separate subsidiaries, Hawthorn Leslie (Shipbuilders) Ltd. and Hawthorn Leslie (Engineers) Ltd. In 1968 the Company's shipbuilding interests were merged with that of Swan Hunter and the Vickers Naval Yard to create Swan Hunter & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Turbine
A steam turbine is a machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel alloys into precision parts using technologies that first became available in the 20th century; continued advances in durability and efficiency of steam turbines remains central to the energy economics of the 21st century. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results in a closer approach to the ideal reversible expansion process. Because the turbine generates rotary motion, it can be coupled to a generator to harness its motion into electricity. Such turbogenerators are the core of thermal power stations which can be fueled by fossil- ... [...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] |
Sea Trials
A sea trial is the testing phase of a watercraft (including boats, ships, and submarines). It is also referred to as a "shakedown cruise" by many naval personnel. It is usually the last phase of construction and takes place on open water, and it can last from a few hours to many days. Sea trials are conducted to measure a vessel's performance and general seaworthiness. Testing of a vessel's speed, maneuverability, equipment and safety features are usually conducted. Usually in attendance are technical representatives from the builder (and from builders of major systems), governing and certification officials, and representatives of the owners. Successful sea trials subsequently lead to a vessel's certification for commissioning and acceptance by its owner. Although sea trials are commonly thought to be conducted only on new-built vessels (referred by shipbuilders as 'builders trials'), they are regularly conducted on commissioned vessels as well. In new vessels, they are use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Lord Of The Admiralty
The First Lord of the Admiralty, or formally the Office of the First Lord of the Admiralty, was the political head of the English and later British Royal Navy. He was the government's senior adviser on all naval affairs, responsible for the direction and control of the Admiralty, and also of general administration of the Naval Service of the Kingdom of England, Great Britain in the 18th century, and then the United Kingdom, including the Royal Navy, the Royal Marines, and other services. It was one of the earliest known permanent government posts. Apart from being the political head of the Naval Service the post holder was simultaneously the pre-eminent member of the Board of Admiralty. The office of First Lord of the Admiralty existed from 1628 until it was abolished when the Admiralty, Air Ministry, Ministry of Defence, and War Office were all merged to form the new Ministry of Defence in 1964. Its modern-day equivalent is the Secretary of State for Defence. History In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 187424 January 1965) was a British statesman, soldier, and writer who served as Prime Minister of the United Kingdom twice, from 1940 to 1945 Winston Churchill in the Second World War, during the Second World War, and again from 1951 to 1955. Apart from two years between 1922 and 1924, he was a Member of Parliament (United Kingdom), Member of Parliament (MP) from 1900 to 1964 and represented a total of five UK Parliament constituency, constituencies. Ideologically an Economic liberalism, economic liberal and British Empire, imperialist, he was for most of his career a member of the Conservative Party (UK), Conservative Party, which he led from 1940 to 1955. He was a member of the Liberal Party (UK), Liberal Party from 1904 to 1924. Of mixed English and American parentage, Churchill was born in Oxfordshire to Spencer family, a wealthy, aristocratic family. He joined the British Army in 1895 and saw action in British Raj, Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceremonial Ship 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 (ship), 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 widel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hebburn
Hebburn is a town in the metropolitan county of Tyne and Wear, England. It governed under the borough of South Tyneside; formerly governed under the county of Durham until 1974 with its own urban district from 1894 until 1974. It is on the south bank of the River Tyne between Gateshead and Jarrow and opposite Wallsend and Walker. The population of Hebburn was 18,808 in 2001, History In Saxon times Hebburn was a small fishing hamlet upon the river Tyne. It is thought that the name Hebburn may be derived from the Old English terms, ''heah'' meaning "high", and ''byrgen'' meaning a "burial mound", though it could also mean ''the high place beside the water''. The first record of Hebburn mentions a settlement of fishermen's huts in the 8th century, which were burned by the Vikings. In the 14th century the landscape was dominated by a peel tower. A wall, a portion of which still remains at St. John's Church, could also be seen. The Lordship of the Manor of Hebburn passed t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keel Laying
Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one of the four specially celebrated events in the life of a ship; the others are launching, commissioning and decommissioning. In earlier times, the event recognized as the keel laying was the initial placement of the central timber making up the backbone of a vessel, called the keel. As steel ships replaced wooden ones, the central timber gave way to a central steel beam. Modern ships are most commonly built in a series of pre-fabricated, complete hull sections rather than around a single keel. The event recognized as the keel laying is the first joining of modular components, or the lowering of the first module into place in the building dock. It is now often called "keel authentication", and is the ceremonial beginning of the ship's li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paravane (weapon)
The paravane , a form of towed underwater "glider" with a warhead that was used in anti-submarine warfare, was developed from 1914–16 by Commander C. Vivian Usborne and Lieutenant C. Dennistoun Burney, funded by Sir George White, founder of the Bristol Aeroplane Company. It was used against naval mines and submarines. Usage Initially developed to destroy naval mines, the paravane is strung out and streamed alongside the towing ship, often from the bow, but in many WWII applications aboard minesweepers, the paravane was towed from the stern. The wings of the paravane pull it away laterally from the towing ship, placing a tension on the tow cable. If the tow cable snags the cable anchoring a mine then the anchoring cable is cut by jaws on the paravane, allowing the mine to float to the surface, where it is destroyed by gunfire. If the anchor cable fails to part, the mine and the paravane are brought together and the mine explodes against the paravane. The cable can then b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depth Charge
A depth charge is an anti-submarine warfare (ASW) weapon. It is intended to destroy a submarine by being dropped into the water nearby and detonating, subjecting the target to a powerful and destructive hydraulic shock. Most depth charges use high explosive charges and a fuze set to detonate the charge, typically at a specific depth. Depth charges can be dropped by ships, patrol aircraft, and helicopters. Depth charges were developed during World War I, and were one of the first viable methods of attacking a submarine underwater. They were widely used in World War I and World War II, and remained part of the anti-submarine arsenals of many navies during the Cold War, during which they were supplemented, and later largely replaced, by anti-submarine homing torpedoes. A depth charge fitted with a nuclear warhead is also known as a " nuclear depth bomb". These were designed to be dropped from a patrol plane or deployed by an anti-submarine missile from a surface ship, or a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-aircraft Warfare
Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, subsurface ( submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defence. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. In some countries, such as Britain and Germany during the Second World War, the Soviet Union, and modern NATO and the United States, ground-based air defence and air defence airc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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