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River-class Submarine
The River class, or ''Thames'' class, were a class of submarines built for the Royal Navy. Operating during the Second World War, the three boats of the class comprised , and . All the submarines were named after rivers in the United Kingdom. One was lost during the war and the rest taken out of service following it. Design The River class was the last attempt by the British Admiralty, Admiralty to produce "fleet submarines", submarines fast enough to operate as part of a fleet, which at the time meant being able to manage somewhere around while surfaced. The previous attempts had been the steam powered British K-class submarine, K-class submarines and the large gunned British M-class submarine, M-class submarines. The M class were K-class Hull (watercraft), hulls re-engined with diesels and modified to take a single naval gun directly forward of the conning tower. A design was drawn up in the late 1920s and three vessels were built by Vickers in Barrow: ''Thames'' in 1932 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British S-class Submarine (1931)
The S-class submarines of the Royal Navy were originally designed and built during the modernisation of the submarine force in the early 1930s to meet the need for smaller boats to patrol the restricted waters of the North Sea and the Mediterranean Sea, replacing the British H-class submarines. As part of the major naval construction for the Royal Navy during the Second World War, the S class became the single largest group of submarines ever built for the Royal Navy. A total of 62 were constructed over a period of 15 years, with fifty of the "improved" S class being launched between 1940 and 1945. At the start of the Second World War the S class was together with the British British U-class submarine, U and British T-class submarine, T class, Dutch and German Type VII submarine, Type VII one of the most advanced submarine classes in service at the time. Service The submarines operated in the waters around the United Kingdom and in the Mediterranean, and later in the Far East ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull (watercraft)
A hull is the watertight body of a ship, boat, submarine, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or Mast (sailing), mast. The line where the hull meets the water surface is called the waterline. General features There is a wide variety of hull types that are chosen for suitability for different usages, the hull shape being dependent upon the needs of the design. Shapes range from a nearly perfect box, in the case of scow barges, to a needle-sharp surface of revolution in the case of a racing multihull sailboat. The shape is chosen to strike a balance between cost, hydrostatic considerations (accommodation, load carrying, and stability), hydrodynamics (speed, power requirements, and motion and behavior in a seaway) and special considerations for the ship's role, such as the rounded bow of an icebreaker or the flat bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trincomalee
Trincomalee (; , ; , ), historically known as Gokanna and Gokarna, is the administrative headquarters of the Trincomalee District and major resort port city of Eastern Province, Sri Lanka, Eastern Province, Sri Lanka. Located on the east coast of the island overlooking the Trincomalee Harbour, Trincomalee has been one of the main centres of Sri Lankan Tamil dialects, Sri Lankan Tamil speaking culture on the island for nearly a millennium. With a population of 99,135, the city is built on a peninsula of the same name, which divides its inner and outer harbours. It is home to the famous Koneswaram temple from where it developed and earned its historic Tamil name ''Thirukonamalai''. The town is home to other historical monuments such as the Pathirakali Amman Temple, Bhadrakali Amman Temple, Trincomalee, the Trincomalee Hindu Cultural Hall and, opened in 1897, the R. K. M. Sri Koneswara Hindu College, Trincomalee Hindu College. Trincomalee is also the site of the Trincomalee railway s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Hawthorn
Operation Hawthorn was the codename for a series of British Commando raids on Sardinia during the Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo .... The raids between June and July 1943 were carried out by L Detachment Special Boat Squadron. The raiders were landed either by parachute or submarine and most of those who landed were killed or captured and the detachment had to be reconstituted. The operation was led by Captain John Verney who commanded the L Detachment of the Special Boat Squad. The operation was planned to span 3 days (from June 30 till July 2) yet was called off after the first day of battle. References {{DEFAULTSORT:Hawthorn, Operation of 1943 Conflicts in 1943 World War II British Commando raids Special Air Service operations Special ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malta
Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two official languages are Maltese language, Maltese and English language, English. The country's capital is Valletta, which is the smallest capital city in the EU by both area and population. It was also the first World Heritage Site, World Heritage City in Europe to become a European Capital of Culture in 2018. With a population of about 542,000 over an area of , Malta is the world's List of countries and dependencies by area, tenth-smallest country by area and the List of countries and dependencies by population density, ninth-most densely populated. Various sources consider the country to consist of a single urban region, for which it is often described as a city-state. Malta has been inhabited since at least 6500 BC, during the Mesolith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norway
Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of Norway. Bouvet Island, located in the Subantarctic, is a Dependencies of Norway, dependency, and not a part of the Kingdom; Norway also Territorial claims in Antarctica, claims the Antarctic territories of Peter I Island and Queen Maud Land. Norway has a population of 5.6 million. Its capital and largest city is Oslo. The country has a total area of . The country shares a long eastern border with Sweden, and is bordered by Finland and Russia to the northeast. Norway has an extensive coastline facing the Skagerrak strait, the North Atlantic Ocean, and the Barents Sea. The unified kingdom of Norway was established in 872 as a merger of Petty kingdoms of Norway, petty kingdoms and has existed continuously for years. From 1537 to 1814, Norway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean
The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Europe, on the south by North Africa, and on the west almost by the Morocco–Spain border. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The sea was an important rout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Sea
The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, covering . It hosts key north European shipping lanes and is a major fishery. The coast is a popular destination for recreation and tourism in bordering countries, and a rich source of energy resources, including wind energy, wind and wave power. The North Sea has featured prominently in geopolitical and military affairs, particularly in Northern Europe, from the Middle Ages to the modern era. It was also important globally through the power northern Europeans projected worldwide during much of the Middle Ages and into the modern era. The North Sea was the centre of the Viking Age, Vikings' rise. The Hanseatic League, the Dutch Golden Age, Dutch Republic, and Kingdom of Great Britain, Brita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compression (physics), compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the Cylinder (engine), cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a dies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vickers
Vickers was a British engineering company that existed from 1828 until 1999. It was formed in Sheffield as a steel foundry by Edward Vickers and his father-in-law, and soon became famous for casting church bells. The company went public in 1867, acquired more businesses, and began branching out into military hardware and shipbuilding. In 1911, the company expanded into aircraft manufacturer, aircraft manufacture and opened a flying school. They expanded even further into electrical and railway manufacturing, and in 1928 acquired an interest in the Supermarine. Beginning in the 1960s, various parts of the company were nationalised, and in 1999 the rest of the company was acquired by Rolls-Royce Holdings, Rolls-Royce plc, which sold the defence arm to Alvis plc. The Vickers name lived on in Alvis Vickers, until the latter was acquired by BAE Systems in 2004 to form BAE Systems Platforms & Services, BAE Systems Land Systems. History Early history Vickers was formed in Sheffiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
