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HMS Penn (G77)
HMS ''Penn'' was a P-class destroyer built for the Royal Navy during the Second World War. Description The P-class destroyers were repeats of the preceding O class, except that they were armed with 4-inch (102 mm) anti-aircraft guns. They displaced at standard load and at deep load. The ships had an overall length of , a beam of and a deep draught of . They were powered by two Parsons geared steam turbines, each driving one propeller shaft, using steam provided by two Admiralty three-drum boilers. The turbines developed a total of and gave a maximum speed of . The ships carried a maximum of of fuel oil that gave them a range of at . The ships' complement was 176 officers and men.Lenton, p. 172 ''Penn'' was armed with four QF 4-inch Mark V guns in single mounts, two pairs uperfiringfore and aft. Her light anti-aircraft suite was composed of one quadruple mount for 2-pounder "pom-pom" guns and four single Oerlikon 20 mm cannon. The ship was fitted with two above-w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vickers Armstrong
Vickers-Armstrongs Limited was a British engineering conglomerate formed by the merger of the assets of Vickers Limited and Sir W G Armstrong Whitworth & Company in 1927. The majority of the company was nationalised in the 1960s and 1970s, with the remainder being divested as Vickers plc in 1977. History Vickers merged with the Tyneside-based engineering company Armstrong Whitworth, founded by William Armstrong, to become Vickers-Armstrongs. Armstrong Whitworth and Vickers had developed along similar lines, expanding into various military sectors and produced a whole suite of military products. Armstrong Whitworth were notable for their artillery manufacture at Elswick and shipbuilding at a yard at High Walker on the River Tyne. 1929 saw the merger of the acquired railway business with those of Cammell Laird to form Metropolitan Cammell Carriage and Wagon (MCCW); Metro Cammell. In 1935, before rearmament began, Vickers-Armstrongs was the third-largest manufacturing employ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Length Overall
__NOTOC__ Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth (for example, £2.50 per metre LOA). LOA is usually measured on the hull alone. For sailing ships, this may ''exclude'' the bowsprit and other fittings added to the hull. This is how some racing boats and tall ships use the term LOA. However, other sources may include bowsprits in LOA. Confusingly, LOA has different meanings. "Sparred length", "Total length including bowsprit", "Mooring length" and "LOA including bowsprit" are other expressions that might indicate the full length of a sailing ship. LOD Often used to distinguish between the length of a vessel including projections (e.g. bow sprits, etc.) from the length of the hull itself, the Length on Deck or LOD is often repor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valletta
Valletta (, mt, il-Belt Valletta, ) is an Local councils of Malta, administrative unit and capital city, capital of Malta. Located on the Malta (island), main island, between Marsamxett Harbour to the west and the Grand Harbour to the east, its population within administrative limits in 2014 was 6,444. According to the data from 2020 by Eurostat, the Functional Urban Area and metropolitan region covered the whole island and has a population of 480,134. Valletta is the southernmost capital of Europe, and at just , it is the European Union's smallest capital city. Valletta's 16th-century buildings were constructed by the Hospitaller Malta, Knights Hospitaller. The city was named after Jean Parisot de Valette, who succeeded in defending the island from an Ottoman invasion during the Great Siege of Malta. The city is Baroque architecture, Baroque in character, with elements of Mannerist architecture#Mannerist architecture, Mannerist, Neoclassical architecture, Neo-Classical and Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Harbour
The Grand Harbour ( mt, il-Port il-Kbir; it, Porto Grande), also known as the Port of Valletta, is a natural harbour on the island of Malta. It has been substantially modified over the years with extensive docks (Malta Dockyard), wharves, and fortifications. Description The harbour mouth faces north east and is bounded to the north by Saint Elmo Point and further sheltered by an isolated breakwater and is bounded to the south by Ricasoli Point. Its north west shore is formed by the Sciberras peninsula, which is largely covered by the city of Valletta and its suburb Floriana. This peninsula also divides Grand Harbour from a second parallel natural harbour, Marsamxett Harbour. The main waterway of Grand Harbour continues inland almost to Marsa. The southeastern shore of the harbour is formed by a number of inlets and headlands, principally Rinella Creek, Kalkara Creek, Dockyard Creek, and French Creek, which are covered by Kalkara and the Three Cities: Cospicua, Vittoriosa, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malta
Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies south of Sicily (Italy), east of Tunisia, and north of Libya. The official languages are Maltese and English, and 66% of the current Maltese population is at least conversational in the Italian language. Malta has been inhabited since approximately 5900 BC. Its location in the centre of the Mediterranean has historically given it great strategic importance as a naval base, with a succession of powers having contested and ruled the islands, including the Phoenicians and Carthaginians, Romans, Greeks, Arabs, Normans, Aragonese, Knights of St. John, French, and British, amongst others. With a population of about 516,000 over an area of , Malta is the world's tenth-smallest country in area and fourth most densely populated sovereign cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Pedestal
Operation Pedestal ( it, Battaglia di Mezzo Agosto, Battle of mid-August), known in Malta as (), was a British operation to carry supplies to the island of Malta in August 1942, during the Second World War. Malta was a base from which British ships, submarines and aircraft attacked Axis convoys to Libya, during the North African Campaign (1940–1943). From 1940 to 1942, the Axis conducted the Siege of Malta, with air and naval forces. Despite many losses, enough supplies were delivered by the British for the population and military forces on Malta to resist, although it ceased to be an offensive base for much of 1942. The most crucial supply item in Operation Pedestal was fuel, carried by , an American tanker with a British crew. The convoy sailed from Britain on 3 August 1942 and passed through the Strait of Gibraltar into the Mediterranean on the night of The Axis attempt to prevent the fifty ships of the convoy reaching Malta, using bombers, German E-boats, Italian MA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warship Week
Warship Weeks were British National savings campaigns during the Second World War, with the aim of a Royal Navy warship being adopted by a civil community. During the early parts of the war, the Royal Navy not only had lost many capital ships but was facing increasing pressure to provide escorts for convoys in the Atlantic. While there was not a shortage of sailors, ships sunk by enemy action had to be replaced. The equivalent for the British Army was Salute the Soldier Week and the equivalent for the Royal Air Force was Wings for Victory Week. Campaign Local fund-raising A level of savings would be set to raise enough money to provide the cost of building a particular naval ship. The aim was for cities to raise enough to adopt battleships and aircraft carriers, while towns and villages would focus on cruisers and destroyers. Smaller towns and villages would be set a lower figure. Once the target money was saved for the ship, the community would adopt the ship and its crew. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newcastle-on-Tyne
Newcastle upon Tyne ( RP: , ), or simply Newcastle, is a city and metropolitan borough in Tyne and Wear, England. The city is located on the River Tyne's northern bank and forms the largest part of the Tyneside built-up area. Newcastle is also the most populous city of North East England. Newcastle developed around a Roman settlement called Pons Aelius and the settlement later took the name of a castle built in 1080 by William the Conqueror's eldest son, Robert Curthose. Historically, the city’s economy was dependent on its port and in particular, its status as one of the world's largest ship building and repair centres. Today, the city's economy is diverse with major economic output in science, finance, retail, education, tourism, and nightlife. Newcastle is one of the UK Core Cities, as well as part of the Eurocities network. Famous landmarks in Newcastle include the Tyne Bridge; the Swing Bridge; Newcastle Castle; St Thomas’ Church; Grainger Town including Grey's M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laid Down
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 life ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Oil
Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil, marine fuel oil (MFO), bunker fuel, furnace oil (FO), gas oil (gasoil), heating oils (such as home heating oil), diesel fuel and others. The term ''fuel oil'' generally includes any liquid fuel that is burned in a furnace or boiler to generate heat ( heating oils), or used in an engine to generate power (as motor fuels). However, it does not usually include other liquid oils, such as those with a flash point of approximately , or oils burned in cotton- or wool-wick burners. In a stricter sense, ''fuel oil'' refers only to the heaviest commercial fuels that crude oil can yield, that is, those fuels heavier than gasoline (petrol) and naphtha. Fuel oil consists of long-chain hydrocarbons, particularly alkanes, cycloalkanes, and aromatics. Small molecules, such as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Admiralty Three-drum Boiler
Three-drum boilers are a class of water-tube boiler used to generate steam, typically to power ships. They are compact and of high evaporative power, factors that encourage this use. Other boiler designs may be more efficient, although bulkier, and so the three-drum pattern was rare as a land-based stationary boiler. The fundamental characteristic of the "three-drum" design is the arrangement of a steam drum above two water drums, in a triangular layout. Water tubes fill in the two sides of this triangle between the drums, and the furnace is in the centre. The whole assembly is then enclosed in a casing, leading to the exhaust flue. Firing can be by either coal or oil. Many coal-fired boilers used multiple firedoors and teams of stokers, often from both ends. Development Development of the three-drum boiler began in the late 19th century, with the demand from naval ships that required high power and a compact boiler. The move to water-tube boilers had already begun, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller Shaft
A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power and torque and rotation, usually used to connect other components of a drivetrain that cannot be connected directly because of distance or the need to allow for relative movement between them. As torque carriers, drive shafts are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, while avoiding too much additional weight as that would in turn increase their inertia. To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints, jaw couplings, or rag joints, and sometimes a splined joint or prismatic joint. History The term ''driveshaft'' first appeared during the mid-19th centu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
