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Archimede-class Submarine
The ''Archimede'' class were a group of four submarines built for the (Royal Italian Navy) in the early 1930s. The boats fought in the Spanish Civil War (under the Nationalist flag) and in World War II. In Spanish service, two boats were known as the ''General Mola'' class; these were taken out of service in 1959. Design The ships were designed by the firm Cavallini and were a partially double hulled design. They were an enlarged version of the with ballast tanks rearranged, greater range, fuel and torpedo capacity for ocean service. Like most of the later ocean-going submarines of the Italian navy, their deck armament consisting of two guns was conceived to deal with armed merchantmen in surface combat. They also mounted two anti-aircraft machine guns. The number of torpedoes was increased from 12 on the ''Settembrini'' class to 16. Boats All boats were built by the shipyard of Franco Tosi at Taranto Taranto (; ; previously called Tarent in English) is a coastal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimède
The bathyscaphe ''Archimède'' is a deep diving research submersible of the French Navy. It used of hexane as the gasoline buoyancy of its float. It was designed by Pierre Willm and Georges Houot. In 1964, ''Archimède'' descended into "what was then thought to be the deepest part of the Puerto Rico Trench", which the NY Times reported as . ''Archimède'' was christened on 27 July 1961, at the French Navy base of Toulon. It was designed to go beyond , and displaced 61 tons. In October 1961, ''Archimède'' passed its first dive tests, diving to unmanned. On 27 November 1961, ''Archimède'' achieved a speed of , over a distance of at a depth of in the Mediterranean Sea. On 23 May 1962, ''Archimède'' descended to off Honshu, Japan, in the Pacific, at the Japan Deep. On 15 July 1962, ''Archimède'' descended to into the Kurile-Kamchatcha Trench, making it the second deepest dive ever, at that point in time, second only to the dive on the Challenger Deep. On 12 August 1962 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballast Tank
A ballast tank is a Compartment (ship), compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct Trim (vessel), trim or Angle of list, list, to provide a more even load distribution along the hull to reduce structural Hogging and sagging, hogging or sagging stresses, or to increase Draft (hull), draft, as in a semi-submersible vessel or platform, or a SWATH, to improve seakeeping. Using water in a tank provides easier weight adjustment than the stone or iron ballast used in older vessels, and makes it easy for the crew to reduce a vessel's Draft (hull), draft when it enters shallower water, by temporarily pumping out ballast. Airships use ballast tanks mainly to control buoyancy and correct trim. History The concept of ballast tanks, inspired by nature, can be seen in aquatic life forms like blowfish and the argonaut octopus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galileo Galilei
Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei ( , , ) or mononymously as Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a polymath. He was born in the city of Pisa, then part of the Duchy of Florence. Galileo has been called the father of observational astronomy, modern-era classical physics, the scientific method, and modern science. Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of the pendulum and "hydrostatic balances". He was one of the earliest Renaissance developers of the thermoscope and the inventor of various sector (instrument), military compasses. With an improved telescope he built, he observed the stars of the Milky Way, the phases of Venus, the Galilean moons, four largest satellites of Jupiter, Saturn's r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PBY Catalina
The Consolidated Model 28, more commonly known as the PBY Catalina (U.S. Navy designation), is a flying boat and amphibious aircraft designed by Consolidated Aircraft in the 1930s and 1940s. In U.S. Army service, it was designated as the OA-10 and in Canadian service as the Canso, and it later received the NATO reporting name Mop. It was one of the most widely used seaplanes of World War II. Catalinas served with every branch of the United States Armed Forces and in the air forces and navies of many other nations. The last military PBYs served until the 1980s. As of 2021, 86 years after its first flight, the aircraft continues to fly as a waterbomber (or airtanker) in aerial firefighting operations in some parts of the world. Design and development Background The PBY was originally designed to be a patrol bomber, an aircraft with a long operational range intended to locate and attack enemy transport ships at sea to disrupt enemy supply lines. With a mind to a poten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of the Royal Flying Corps (RFC) and the Royal Naval Air Service (RNAS). Following the Allies of World War I, Allied victory over the Central Powers in 1918, the RAF emerged as the largest air force in the world at the time. Since its formation, the RAF has played History of the Royal Air Force, a significant role in Military history of the United Kingdom, British military history. In particular, during the Second World War, the RAF established Air supremacy, air superiority over Nazi Germany's Luftwaffe during the Battle of Britain, and led the Allied strategic bombing effort. The RAF's mission is to support the objectives of the British Ministry of Defence (United Kingdom), Ministry of Defence (MOD), which are to "provide the capabilities nee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galileo Ferraris
Galileo Ferraris (31 October 1847 – 7 February 1897) was an Italian university professor, physicist and electrical engineer, one of the pioneers of AC power system and inventor of the induction motor although he never patented his work. Many newspapers touted that his work on the induction motor and power transmission systems were some of the greatest inventions of all ages. He published an extensive and complete monograph on the experimental results obtained with open-circuit transformers of the type designed by the power engineering, power engineers Lucien Gaulard and John Dixon Gibbs. Biography Born at Livorno Vercellese (Kingdom of Sardinia), Ferraris gained a master's degree in engineering and became an assistant of technical physics near the Regal Italian Industrial Museum. Ferraris independently researched the rotating magnetic field, rotary magnetic field in 1885. Ferraris experimented with different types of asynchronous electric motors. The research and his studies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Torbay (N79)
HMS ''Torbay'' (N79) was a T-class submarine of the Royal Navy. She was laid down at Chatham Dockyard and launched on 9 April 1940. ''Torbay'' had an active career, serving mainly in the Mediterranean, although she also served in the Pacific Far East at the end of the war. Altogether she sank 17 merchant ships, totalling 38,000 tons, plus 5 warships and 24 sailing vessels, and was involved in an attack on Corfu harbour that won her captain, Lieutenant Commander (Lt. Cdr.) Anthony Miers, the Victoria Cross. ''Torbay'' was also allegedly involved in two incidents of war crimes. Service history ''Torbay'' was commissioned on 14 January 1941, under the command of Lt. Cdr. Anthony Miers. In March 1941 she sailed from Portsmouth on her first offensive patrol, to intercept the battleships and , which were heading for Brest after their raiding sortie in the North Atlantic. Unable to find them, ''Torbay'' was ordered to continue to Gibraltar, and, after another patrol in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MV Ciudad De Barcelona
Ciudad De Barcelona was an ocean liner that was torpedoed and sunk on 30 May 1937, with the loss of more than 200 people. She was built by Cantiere Navale Triestino, Monfalcone, Italy for the Compañía Trasmediterranea and launched on 8 June 1929. Her original name was ''Infante Don Jaime'', but after the declaration of the Second Spanish Republic in April 1931, the ship was renamed ''Ciudad De Barcelona''. The ship was owned by a company of the Spanish businessman Juan March Ordinas who was an important Falangist’s financial supporter. As the Spanish Civil War broke out in June 1936, ''Ciudad De Barcelona'' was nationalized by the Republican government. She was torpedoed by the Spanish Nationalist ''Archimede''-class submarine '' General Sanjurjo'' and sunk off the coast of Malgrat de Mar on 30 May 1937. ''Ciudad De Barcelona'' was carrying 200–250 volunteers of the International Brigades from Marseille to Spain. Up to 65 of them are estimated to have drowned, as well as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
José Sanjurjo
José Sanjurjo y Sacanell (; 28 March 1872 – 20 July 1936) was a Spanish military officer who was one of the military leaders who plotted the July 1936 ''coup d'état'' that started the Spanish Civil War. He was endowed the nobiliary title of "Marquis of the Rif" in 1927. A monarchist opponent of the Second Spanish Republic proclaimed in 1931, he led a ''coup d'état'' known as ''la Sanjurjada'' in August 1932. The authorities easily suppressed the coup and initially condemned Sanjurjo to death, then later commuted his sentence to life imprisonment. The government of Alejandro Lerroux – formed after the 1933 general election – eventually amnestied him in 1934. He took part, from his self-exile in Portugal, in the military plot for the 1936 coup d'état. Following the coup, Sanjurjo, expected by some to become the commander-in-chief of the Nationalist faction, died in an air crash on the third day of the war, when travelling back to Spain. He had chosen to fly in a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archimedes
Archimedes of Syracuse ( ; ) was an Ancient Greece, Ancient Greek Greek mathematics, mathematician, physicist, engineer, astronomer, and Invention, inventor from the ancient city of Syracuse, Sicily, Syracuse in History of Greek and Hellenistic Sicily, Sicily. Although few details of his life are known, based on his surviving work, he is considered one of the leading scientists in classical antiquity, and one of the greatest mathematicians of all time. Archimedes anticipated modern calculus and mathematical analysis, analysis by applying the concept of the Cavalieri's principle, infinitesimals and the method of exhaustion to derive and rigorously prove many geometry, geometrical theorem, theorems, including the area of a circle, the surface area and volume of a sphere, the area of an ellipse, the area under a parabola, the volume of a segment of a paraboloid of revolution, the volume of a segment of a hyperboloid of revolution, and the area of a spiral. Archimedes' other math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shipyard
A shipyard, also called a dockyard or boatyard, is a place where ships are shipbuilding, built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Compared to shipyards, which are sometimes more involved with original construction, dockyards are sometimes more linked with maintenance and basing activities. The terms are routinely used interchangeably, in part because the Shipyard#History, evolution of dockyards and shipyards has often caused them to change or merge roles. Countries with large shipbuilding industries include Australia, Brazil, China, Croatia, Denmark, Finland, France, Germany, India, Republic of Ireland, Ireland, Italy, Japan, the Netherlands, Norway, the Philippines, Poland, Romania, Russia, Singapore, South Korea, Sweden, Taiwan, Turkey, the United Arab Emirates, Ukraine, the United Kingdom, the United States and Vietnam. The shipbuilding industry is more fragmented in Economy of Europe, Europe than in Econom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perim
Perim (), also called Mayyun () in Arabic, is a Yemeni volcanic island in the Strait of Mandeb at the south entrance into the Red Sea, off the south-west coast of Yemen. It administratively belongs to Dhubab District or Bab al-Mandab District, Taiz Governorate. The island of Perim divides the strait of Mandeb into two channels. The island, as a dependency of Aden colony, was a part of the British Empire between 1857 and 1967. Etymology In ancient time, it was called "the island of Diodorus" (, ). It is mentioned by Pliny the Elder, by the author of the ''Periplus of the Erythraean Sea'' and in Ptolemy's Geography. ''Perim'' possibly derives from the Arab general term ''Barim'' (chain) associated with the history of the Straits and one of its Arab names, the other Arab name being Mayyun. The Portuguese called it Majun or Meho (derived from Mayun), although Albuquerque had solemnly named the island ''Vera Cruz'' in 1513. On many British and French maps of the 17th and 18th cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
