1.
Crichton-Vulcan
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Crichton-Vulcan is an abandoned shipyard in Turku, Finland, that once formed the cornerstone of the Finnish shipbuilding industry. The shipyard is best known for World War II coastal defence ships, shipbuilding at the yard gradually ended after 1976, after a new shipyard had been built in the suburb Perno. The old yard was taken over by Turku Repair Yard and used for repair until 2004. The shipyard by the Aura River in Turku then lied abandoned some time and was the target of vandalism, however, the site is currently being turned into an upper-class residential area. Demolition of the old buildings began in June 2011, the first shipyard in Turku was established in 1732 on the eastern bank of the Aura River. The first foundry and metal workshop was established in 1842, after the Crimean War the workshop was acquired by Scotsman William Crichton. Crichton built a new shipyard near the mouth of Aura, soon a joint-stock company, W, m Crichton & C, o Ab was established, merging smaller shipyards. In 1913 W, m Crichton & C, o Ab went bankrupt, Åbo mekaniska verkstads Ab was founded in 1874 and discontinued at the late 1890s. Ab Vulcan was started in 1898 to continue the operations, in 1924 the manager of Vulcan Allan Staffans organised a merger between the two companies creating Crichton-Vulcan Oy. It again was merged with Wärtsilä between 1936 and 1938, Wärtsilä bought the neighbouring boat and engine builder Andros in 1939 and joined it to Crichton-Vulcan. In 1966 the name of the shipyard was changed to Oy Wärtsilä Ab Turun telakka, during World War I, the shipyard served the Imperial Russian Navy. After Finnish independence in 1917, Finland started a program on naval armament, most of the ships were designed by the Dutch company Ingenieurskantoor voor Scheepsbouw and built by Crichton-Vulcan. The shipyard built two coastal ships for the Finnish Navy. The 3, 900-metric-ton Ilmarinen and Väinämöinen were ordered in 1927 and delivered in 1931 and 1932, the shipyard also built the prototypes for the World War II German U-boat fleet. Germany was banned under the Treaty of Versailles from building submarines, three 716-metric-ton submarines were ordered in 1927. The submarines were designed by Ingenieurskantoor voor Scheepsbouw, the design was based on the World War I German Type UB III submarine, the design work and the supervision of the construction was done by Germans. The submarines would serve as a step in the design of the German Type VIIA submarines, the Vetehinen, the Vesihiisi and the Iku-Turso were commissioned in 1930 and 1931. A smaller sub, the 250-metric-ton Vesikko, was launched in 1933 and it too was designed by Ingenieurskantoor voor Scheepsbouw, and was the direct prototype of the German Type II submarine
2.
Submarine
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A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability, the term most commonly refers to a large, crewed vessel. It is also used historically or colloquially to refer to remotely operated vehicles and robots, as well as medium-sized or smaller vessels, such as the midget submarine. The noun submarine evolved as a form of submarine boat, by naval tradition, submarines are usually referred to as boats rather than as ships. Although experimental submarines had been built before, submarine design took off during the 19th century, Submarines were first widely used during World War I, and now figure in many navies large and small. Civilian uses for submarines include marine science, salvage, exploration and facility inspection, Submarines can also be modified to perform more specialized functions such as search-and-rescue missions or undersea cable repair. Submarines are also used in tourism, and for undersea archaeology, most large submarines consist of a cylindrical body with hemispherical ends and a vertical structure, usually located amidships, which houses communications and sensing devices as well as periscopes. In modern submarines, this structure is the sail in American usage, a conning tower was a feature of earlier designs, a separate pressure hull above the main body of the boat that allowed the use of shorter periscopes. There is a propeller at the rear, and various hydrodynamic control fins, smaller, deep-diving and specialty submarines may deviate significantly from this traditional layout. Submarines use diving planes and also change the amount of water, Submarines have one of the widest ranges of types and capabilities of any vessel. Submarines can work at greater depths than are survivable or practical for human divers, modern deep-diving submarines derive from the bathyscaphe, which in turn evolved from the diving bell. In 1578, the English mathematician William Bourne recorded in his book Inventions or Devises one of the first plans for an underwater navigation vehicle and its unclear whether he ever carried out his idea. The first submersible of whose construction there exists reliable information was designed and built in 1620 by Cornelis Drebbel and it was propelled by means of oars. By the mid-18th century, over a dozen patents for submarines/submersible boats had been granted in England, in 1747, Nathaniel Symons patented and built the first known working example of the use of a ballast tank for submersion. His design used leather bags that could fill with water to submerge the craft, a mechanism was used to twist the water out of the bags and cause the boat to resurface. In 1749, the Gentlemens Magazine reported that a design had initially been proposed by Giovanni Borelli in 1680. By this point of development, further improvement in design stagnated for over a century, until new industrial technologies for propulsion. The first military submarine was the Turtle, a hand-powered acorn-shaped device designed by the American David Bushnell to accommodate a single person and it was the first verified submarine capable of independent underwater operation and movement, and the first to use screws for propulsion
3.
Diesel engine
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Diesel engines work by compressing only the air. This increases the air temperature inside the cylinder to such a degree that it ignites atomised diesel fuel that is injected into the combustion chamber. This contrasts with spark-ignition engines such as an engine or gas engine. In diesel engines, glow plugs may be used to aid starting in cold weather, or when the engine uses a lower compression-ratio, the original diesel engine operates on the constant pressure cycle of gradual combustion and produces no audible knock. Low-speed diesel engines can have an efficiency that exceeds 50%. Diesel engines may be designed as either two-stroke or four-stroke cycles and they were originally used as a more efficient replacement for stationary steam engines. Since the 1910s they have used in submarines and ships. Use in locomotives, trucks, heavy equipment and electricity generation plants followed later, in the 1930s, they slowly began to be used in a few automobiles. Since the 1970s, the use of engines in larger on-road and off-road vehicles in the US increased. According to the British Society of Motor Manufacturing and Traders, the EU average for diesel cars accounts for 50% of the total sold, including 70% in France and 38% in the UK. The worlds largest diesel engine is currently a Wärtsilä-Sulzer RTA96-C Common Rail marine diesel, the definition of a Diesel engine to many has become an engine that uses compression ignition. To some it may be an engine that uses heavy fuel oil, to others an engine that does not use spark ignition. However the original cycle proposed by Rudolf Diesel in 1892 was a constant temperature cycle which would require higher compression than what is needed for compression ignition. Diesels idea was to compress the air so tightly that the temperature of the air would exceed that of combustion, to make this more clear, let it be assumed that the subsequent combustion shall take place at a temperature of 700°. Then in that case the pressure must be sixty-four atmospheres, or for 800° centigrade the pressure must be ninety atmospheres. In later years Diesel realized his original cycle would not work, Diesel describes the cycle in his 1895 patent application. Notice that there is no longer a mention of compression temperatures exceeding the temperature of combustion, now all that is mentioned is the compression must be high enough for ignition. In 1806 Claude and Nicéphore Niépce developed the first known internal combustion engine, the Pyréolophore fuel system used a blast of air provided by a bellows to atomize Lycopodium
4.
Torpedo tube
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A torpedo tube is a cylinder shaped device for launching torpedoes. There are two types of torpedo tube, underwater tubes fitted to submarines and some surface ships. Thus a submarine torpedo tube operates on the principle of an airlock, the diagram on the right illustrates the operation of a submarine torpedo tube. The diagram is somewhat simplified but does show the working of a torpedo launch. A torpedo tube has a number of interlocks for safety reasons. For example, an interlock prevents the door and muzzle door from opening at the same time. The submarine torpedo launch sequence is, in simplified form, Open the breech door in the torpedo room, load the torpedo into the tube. Hook up the connection and the torpedo power cable. Shut and lock the breech door, turn on power to the torpedo. A minimum amount of time is required for torpedo warmup, fire control programs are uploaded to the torpedo. This may be manually or automatically, from sea or from tanks. The tube must be vented during this process to allow for complete filling, Open the equalizing valve to equalize pressure in the tube with ambient sea pressure. If the tube is set up for Impulse Mode the slide valve will open with the muzzle door, if Swim Out Mode is selected, the slide valve remains closed. The slide valve allows water from the pump to enter the tube. Modern torpedoes have a safety mechanism that prevents activation of the torpedo unless the torpedo senses the required amount of G-force, the power cable is severed at launch. However, if a wire is used, it remains connected through a drum of wire in the tube. Torpedo propulsion systems vary but electric torpedoes swim out of the tube on their own and are of a smaller diameter,21 weapons with fuel-burning engines usually start outside of the tube. Once outside the tube the torpedo begins its run toward the target as programmed by the control system
5.
Torpedo
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Historically, it was called an automotive, automobile, locomotive or fish torpedo, colloquially called a fish. The term torpedo was originally employed for a variety of devices, from about 1900, torpedo has been used strictly to designate an underwater self-propelled weapon. Todays torpedoes can be divided into lightweight and heavyweight classes, and into straight-running, autonomous homers and they can be launched from a variety of platforms. The word torpedo comes from the name of a genus of rays in the order Torpediniformes. In naval usage, the American Robert Fulton introduced the name to refer to a gunpowder charge used by his French submarine Nautilus to demonstrate that it could sink warships. The concept of a torpedo existed many centuries before it was successfully developed. In 1275, Hasan al-Rammah described. an egg which moves itself, in modern language, a torpedo is an underwater self-propelled explosive, —but historically, the term also applied to primitive naval mines. These were used on an ad hoc basis during the modern period up to the late 19th century. An early submarine, the Turtle, attempted to lay a bomb with a fuse on the hull of HMS Eagle during the American Revolutionary War. In the early 1800s, the American inventor Robert Fulton, while in France and he coined the term torpedo in reference to the explosive charges he outfitted his submarine Nautilus. However, both the French and the Dutch governments were uninterested in the submarine, Fulton then concentrated on developing the torpedo independent of a submarine deployment. However, the British government refused to purchase the invention, stating they did not wish to introduce into naval warfare a system that would give advantage to weaker maritime nations. Fulton carried out a demonstration for the US government on 20 July 1807. Further development languished as Fulton focused on his steam-boat matters, during the War of 1812, torpedoes were employed in attempts to destroy British vessels and protect American harbors. In fact a submarine deployed torpedo was used in an attempt to destroy HMS Ramillies while in New Londons harbor. Hardy to warn the Americans to cease efforts with the use of any boat in this cruel and unheard-of warfare. Torpedoes were used by the Russian Empire during the Crimean War in 1855 against British warships in the Gulf of Finland and they used an early form of chemical detonator. During the American Civil War, the torpedo was used for what is today called a contact mine
6.
Turku
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Turku is a city on the southwest coast of Finland at the mouth of the Aura River, in the region of Southwest Finland. Turku, as a town, was settled during the 13th century and founded most likely at the end of the 13th century and it quickly became the most important city in Finland, a status it retained for hundreds of years. Because of its history, it has been the site of many important events. Along with Tallinn, the city of Estonia, Turku was designated the European Capital of Culture for 2011. In 1996, it was declared the official Christmas City of Finland, due to its location, Turku is a notable commercial and passenger seaport with over three million passengers traveling through the Port of Turku each year to Stockholm and Mariehamn. As of 31 December 2016, the population of Turku was 187,564, there were 318,168 inhabitants living in the Turku sub-region, ranking it as the third largest urban area in Finland after the Greater Helsinki area and Tampere sub-region. The city is bilingual as 5.2 percent of its population identify Swedish as a mother-tongue. The Finnish name Turku originates from an Old East Slavic word, tǔrgǔ, the word turku still means market place in some idioms in Finnish. The Swedish word for market place is torg, and was borrowed from Old East Slavic. The Swedish name Åbo may be a combination of å. As this pattern does not appear in any other Swedish place names in Finland, one theory is that it comes from Aabo, the Finnish rendition of the Russian Avram, which could also be the origin of the name of the river Aura. There is however an old legal term called åborätt, which gave citizens the right to live at land owned by the crown. In Finnish, the genitive of Turku is Turun, meaning of Turku, the Finnish names of organizations and institutes of Turku often begin with this word, as in Turun yliopisto for the University of Turku. Turku has a history as Finlands largest city and occasionally as the administrative center of the country. The citys identity stems from its status as the oldest city in Finland, originally, the word Finland referred only to the area around Turku. Although archaeological findings in the date back to the Stone Age. The Cathedral of Turku was consecrated in 1300, during the Middle Ages, Turku was the seat of the Bishop of Turku, covering the then eastern half of the Kingdom of Sweden until the 17th century. Even if Turku had no official status, both the short-lived institutions of Dukes and Governors-General of Finland usually had their Finnish residences there
7.
Netherlands
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The Netherlands, also informally known as Holland is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing borders with Belgium, the United Kingdom. The three largest cities in the Netherlands are Amsterdam, Rotterdam and The Hague, Amsterdam is the countrys capital, while The Hague holds the Dutch seat of parliament and government. The port of Rotterdam is the worlds largest port outside East-Asia, the name Holland is used informally to refer to the whole of the country of the Netherlands. Netherlands literally means lower countries, influenced by its low land and flat geography, most of the areas below sea level are artificial. Since the late 16th century, large areas have been reclaimed from the sea and lakes, with a population density of 412 people per km2 –507 if water is excluded – the Netherlands is classified as a very densely populated country. Only Bangladesh, South Korea, and Taiwan have both a population and higher population density. Nevertheless, the Netherlands is the worlds second-largest exporter of food and agricultural products and this is partly due to the fertility of the soil and the mild climate. In 2001, it became the worlds first country to legalise same-sex marriage, the Netherlands is a founding member of the EU, Eurozone, G-10, NATO, OECD and WTO, as well as being a part of the Schengen Area and the trilateral Benelux Union. The first four are situated in The Hague, as is the EUs criminal intelligence agency Europol and this has led to the city being dubbed the worlds legal capital. The country also ranks second highest in the worlds 2016 Press Freedom Index, the Netherlands has a market-based mixed economy, ranking 17th of 177 countries according to the Index of Economic Freedom. It had the thirteenth-highest per capita income in the world in 2013 according to the International Monetary Fund, in 2013, the United Nations World Happiness Report ranked the Netherlands as the seventh-happiest country in the world, reflecting its high quality of life. The Netherlands also ranks joint second highest in the Inequality-adjusted Human Development Index, the region called Low Countries and the country of the Netherlands have the same toponymy. Place names with Neder, Nieder, Nether and Nedre and Bas or Inferior are in use in all over Europe. They are sometimes used in a relation to a higher ground that consecutively is indicated as Upper, Boven, Oben. In the case of the Low Countries / the Netherlands the geographical location of the region has been more or less downstream. The geographical location of the region, however, changed over time tremendously
8.
Prototype
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A prototype is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from. It is a used in a variety of contexts, including semantics, design, electronics. A prototype is used to evaluate a new design to enhance precision by system analysts. Prototyping serves to provide specifications for a real, working system rather than a theoretical one, in some design workflow models, creating a prototype is the step between the formalization and the evaluation of an idea. The word prototype derives from the Greek πρωτότυπον prototypon, primitive form, neutral of πρωτότυπος prototypos, original, primitive, from πρῶτος protos, first and τύπος typos, a Working Prototype represents all or nearly all of the functionality of the final product. A Visual Prototype represents the size and appearance, but not the functionality, a User Experience Prototype represents enough of the appearance and function of the product that it can be used for user research. A Functional Prototype captures both function and appearance of the design, though it may be created with different techniques. A Paper Prototype is a printed or hand-drawn representation of the interface of a software product. In some cases, the final production materials may still be undergoing development themselves, process - Mass-production processes are often unsuitable for making a small number of parts, so prototypes may be made using different fabrication processes than the final product. Differences in fabrication process may lead to differences in the appearance of the prototype as compared to the final product, verification - The final product may be subject to a number of quality assurance tests to verify conformance with drawings or specifications. These tests may involve custom inspection fixtures, statistical sampling methods, prototypes are generally made with much closer individual inspection and the assumption that some adjustment or rework will be part of the fabrication process. Prototypes may also be exempted from some requirements that apply to the final product. Engineers and prototype specialists will attempt to minimize the impact of these differences on the role for the prototype. Engineers and prototyping specialists seek to understand the limitations of prototypes to exactly simulate the characteristics of their intended design and it is important to realize that by their very definition, prototypes will represent some compromise from the final production design. Due to differences in materials, processes and design fidelity, it is possible that a prototype may fail to perform acceptably whereas the design may have been sound. In general, it can be expected that individual prototype costs will be greater than the final production costs due to inefficiencies in materials. Prototypes are also used to revise the design for the purposes of reducing costs through optimization and it is possible to use prototype testing to reduce the risk that a design may not perform as intended, however prototypes generally cannot eliminate all risk. As an alternative, rapid prototyping or rapid application development techniques are used for the prototypes, which implement part
9.
Winter War
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The Winter War was a military conflict between the Soviet Union and Finland in 1939–1940. It began with the Soviet invasion of Finland on 30 November 1939, the League of Nations deemed the attack illegal and expelled the Soviet Union from the League on 14 December 1939. Finland refused and the USSR invaded the country, the Soviets possessed more than three times as many soldiers as the Finns, thirty times as many aircraft, and a hundred times as many tanks. The Red Army, however, had been crippled by Soviet leader Joseph Stalins Great Purge of 1937. With more than 30,000 of its officers executed or imprisoned, including most of those of the highest ranks, because of these factors, and high morale in the Finnish forces, Finland repelled Soviet attacks for several months, much longer than the Soviets expected. However, after reorganization and adoption of different tactics, the renewed Soviet offensive overcame Finnish defenses at the borders, hostilities ceased in March 1940 with the signing of the Moscow Peace Treaty. Finland ceded territory representing 11% of its area and 13% of its economy to the Soviet Union. Soviet losses were heavy, and the international reputation suffered. While the Soviet Union did not conquer all Finland, Soviet gains exceeded their pre-war demands and they gained substantial territory along Lake Ladoga, providing a buffer for Leningrad, and territory in northern Finland. Finland retained its sovereignty and enhanced its international reputation, the end of the war cancelled the Franco-British plan to send troops to Finland through northern Scandinavia. One of the goals of the projected Franco-British operation had been to take control of northern Swedens iron ore. For this reason it was also a factor in the launching of Operation Weserübung, Nazi Germanys invasion of Denmark. The poor performance of the Red Army encouraged Hitler to think that an attack on the Soviet Union would be successful, until the beginning of the 19th century, Finland constituted the eastern part of the Kingdom of Sweden. In 1809, to protect their capital, Saint Petersburg. While abortive because of Russias internal strife, these attempts ruined Russias relations with the Finns, the new Bolshevik Russian government was weak, and with the threat of civil war looming Soviet Russia recognized the new Finnish government just three weeks after the declaration of independence. Sovereignty was fully achieved in May 1918 after a civil war. Finland joined the League of Nations in 1920, from which it sought security guarantees, nevertheless, the government of Sweden carefully avoided committing itself to Finnish foreign policy. Another Finnish military policy was the top secret military cooperation between Finland and Estonia, the 1920s and early 1930s were a politically unstable time in Finland
Finland
