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RV Mirai
RV ''Mirai'' is a Japanese oceanographic research vessel. She was originally built as the nuclear-powered general cargo ship ''Mutsu'', but never carried commercial cargo.http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/27/029/27029493.pdf History Development and construction ''Mutsu'' (1972–1996) The reactor was completed on 25 August 1972, and fuel was loaded on 4 September. Good overview of the construction, leak, and lessons learnt. When officials announced that the first test run was to be run at the pier in Ōminato, local protests forced them to reconsider. Eventually it was decided to test the ship in the open ocean, east of Cape Shiriya. The ship departed Ōminato on 26 August 1974, and the reactor attained criticality on 28 August. Radiation accident As the crew brought the reactor up to 1.4% of capacity at 5pm on 1 September 1974, there was a minor shielding inadequacy that permitted the escape of neutrons and gamma rays from the reactor s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutsu, Aomori
is a city located in Aomori Prefecture, Japan. , the city had an estimated population of 56,244, and a population density of 65 persons per km2, in 28,778 households. The total area of the city is , making it the largest municipality in Aomori Prefecture in terms of area. Geography Mutsu occupies most of Shimokita Peninsula and is bordered by Mutsu Bay to the south and Tsugaru Strait to the north, and is the northernmost city on the island of Honshū. The volcanic Osorezan Mountain Range extends across the northern portion of the city, and includes a number of caldera lakes. Parts of the city is within the limits of the Shimokita Hantō Quasi-National Park, including Mount Osore, Yagen Valley, and Taijima. Neighboring municipalities *Aomori Prefecture ** Kazamaura ** Ōma **Higashidōri ** Sai **Yokohama Climate Mutsu has a rare oceanic climate (Köppen: ''Cfb'') or warm-summer humid continental climate (''Dfb'') by 0 °C isoterm, the south of the city being the norther ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Controllable Pitch Propeller
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch. Reversible propellers—those where the pitch can be set to negative values—can also create reverse thrust for braking or going backwards without the need to change the direction of shaft revolution. A controllable pitch propeller (CPP) can be efficient for the full range of rotational speeds and load conditions, since its pitch will be varied to absorb the maximum power that the engine is capable of producing. When fully loaded, a vessel will need more propulsion power than when empty. By varying the propeller blades to the optimal pitch, higher efficiency can be obtained, thus saving fuel. A vessel with a VPP can accelerate faster from a standstill and can decelerate much more effectively, making stopping quicker and safer. A CPP can also improve vessel maneuverability by directing a stronger flow of water onto the ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Vessels Of Japan
Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to controlling sources of bias and error. These activities are characterized by accounting and controlling for biases. A research project may be an expansion on past work in the field. To test the validity of instruments, procedures, or experiments, research may replicate elements of prior projects or the project as a whole. The primary purposes of basic research (as opposed to applied research) are documentation, discovery, interpretation, and the research and development (R&D) of methods and systems for the advancement of human knowledge. Approaches to research depend on epistemologies, which vary considerably both within and between humanities and sciences. There are several forms of research: scientific, humanities, artistic, economi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sevmorput
''Sevmorput'' ( rus, Севморпуть, p=sʲɪvmɐrˈputʲ, Northeast Passage) is a Russian nuclear-powered cargo ship. The 1988-built vessel is one of only four nuclear-powered merchant ships ever built and, after returning to service in 2016 following an extensive refit, the only such vessel to remain in service . History Development and construction After the Second World War, the Soviet Union began developing the Northern Sea Route in order to support the economic exploitation of the vast natural resources of the northern regions. The ambitious plan initiated by the 20th Congress of the Communist Party of the Soviet Union in the 1950s led to the construction of powerful icebreakers to escort cargo ships through the ice-covered waters and extend the navigating season in the Russian Arctic. The flagship of the post-war Soviet icebreaker fleet was the world's first nuclear-powered icebreaker, ''Lenin''. While numerous warships and submarines were built with nuclear mari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Hahn (ship)
''Otto Hahn'' was one of only four nuclear-powered cargo vessels built to date. Planning of a German-built trade and research vessel to test the feasibility of nuclear power in civil service began in 1960 under the supervision of German physicist Erich Bagge. Launched in 1964, her nuclear reactor was deactivated 15 years later in 1979 and replaced by a conventional diesel engine room. The ship was scrapped in 2009. History ''Otto Hahn''s keel was laid down in 1963 by Howaldtswerke Deutsche Werft AG of Kiel. She was launched in 1964 and named in honour of Professor Otto Hahn, the German chemist and Nobel prize-winner, who discovered the nuclear fission of uranium in 1938. The first captain of the ''Otto Hahn'' was Heinrich Lehmann-Willenbrock, a German U-boat ace of World War II. In 1968, the ship's 38-megawatt nuclear reactor was taken critical and sea trials began. In October of that year, NS ''Otto Hahn'' was certified for commercial freight transport and research. Config ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NS Savannah
NS ''Savannah'' was the first nuclear-powered merchant ship. She was built in the late 1950s at a cost of $46.9 million (including a $28.3 million nuclear reactor and fuel core) and launched on July 21, 1959. She was funded by United States government agencies. ''Savannah'' was a demonstration project for the potential use of nuclear energy. The ship was named after , the first steamship to cross the Atlantic ocean. She was in service between 1962 and 1972 as one of only four nuclear-powered cargo ships ever built. (The Soviet ice-breaker ''Lenin'', launched on December 5, 1957, was the first nuclear-powered civil ship.) ''Savannah'' was deactivated in 1971 and after several moves has been moored at Pier 13 of the Canton Marine Terminal in Baltimore, Maryland, since 2008. Origin In 1955, President Dwight Eisenhower proposed building a nuclear-powered merchant ship as a showcase for his "Atoms for Peace" initiative. The next year, Congress authorized ''Savan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutsu Science Museum
Mutsu may refer to: Places * Mutsu, Aomori, a city in Aomori prefecture, Japan * Mutsu Province, one of the old provinces of Japan * Mutsu Bay, a bay inside Aomori Prefecture, Japan * Mutsu, Estonia, a village in Vastseliina Parish, Võru County, Estonia People * Mutsu Munemitsu (1844–1897), diplomat in Japan during the Meiji period * Mutsu Hirokichi (1869–1942), Japanese diplomat and an educator in Meiji and Taishō period Japan * Iso Mutsu (1867–1930), author of the first guide to Kamakura ever written Other uses * , a 1970 merchant ship that was Japan's only nuclear-powered ship * , a 1920 battleship of the Imperial Japanese Navy * Bluefish, a sushi/sashimi ingredient * Mutsu (apple), a yellow-gold apple also known as Crispin * The fictional Mutsu clan in the manga and anime series ''Shura no Toki - Age of Chaos'' * Mutsu Kokubun-ji Yakushidō is a Buddhist temple in Wakabayashi-ku, Sendai, Japan, belonging to the Shingon-shū Chizan-ha sect, and is the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sasebo, Nagasaki
is a Core cities of Japan, core city located in Nagasaki Prefecture, Japan. It is also the second largest city in Nagasaki Prefecture, after its capital, Nagasaki. On 1 June 2019, the city had an estimated population of 247,739 and a population density of 581 persons per km2 (1,505 persons per square mile). The total area is . The city includes a part of Saikai National Park. Located in the southern part of the city is the Dutch-styled theme park ''Huis Ten Bosch (theme park), Huis Ten Bosch''. The island of Ukujima is also administered as part of Sasebo city. History The area of present-day Sasebo was a small fishing village under the control of nearby Hirado Domain until shortly after the start of the Meiji period. Imperial Japanese Navy Admiral Tōgō Heihachirō, when surveying the coasts of northwestern Kyūshū for the site of a navy base, selected his location based on its protected, deep-water harbor, geographic proximity to China and Korea, and the presence of nearby Coal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westinghouse Electric Corporation
The Westinghouse Electric Corporation was an American manufacturing company founded in 1886 by George Westinghouse. It was originally named "Westinghouse Electric & Manufacturing Company" and was renamed "Westinghouse Electric Corporation" in 1945. The company acquired the CBS television network in 1995 and was renamed "CBS Corporation" until being acquired by Viacom in 1999, a merger completed in April 2000. The CBS Corporation name was later reused for one of the two companies resulting from the split of Viacom in 2006. The Westinghouse trademarks are owned by Westinghouse Electric Corporation, and were previously part of Westinghouse Licensing Corporation. The nuclear power business, Westinghouse Electric Company, was spun off from the Westinghouse Electric Corporation in 1999. History Westinghouse Electric was founded by George Westinghouse in Pittsburgh, Pennsylvania, on January 8, 1886. The firm became active in developing electric infrastructure throughout the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Marine Propulsion
Nuclear marine propulsion is propulsion of a ship or submarine with heat provided by a nuclear reactor. The power plant heats water to produce steam for a turbine used to turn the ship's propeller through a gearbox or through an electric generator and motor. Nuclear propulsion is used primarily within naval warships such as nuclear submarines and supercarriers. A small number of experimental civil nuclear ships have been built. Compared to oil- or coal-fuelled ships, nuclear propulsion offers the advantages of very long intervals of operation before refueling. All the fuel is contained within the nuclear reactor, so no cargo or supplies space is taken up by fuel, nor is space taken up by exhaust stacks or combustion air intakes. However, the low fuel cost is offset by high operating costs and investment in infrastructure, so nearly all nuclear-powered vessels are military. Power plants Basic operation of naval ship or submarine Most naval nuclear reactors are of the pressurize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Vessel
A research vessel (RV or R/V) is a ship or boat designed, modified, or equipped to carry out research at sea. Research vessels carry out a number of roles. Some of these roles can be combined into a single vessel but others require a dedicated vessel. Due to the demanding nature of the work, research vessels may be constructed around an icebreaker hull, allowing them to operate in polar waters. History The research ship had origins in the early voyages of exploration. By the time of James Cook's ''Endeavour'', the essentials of what today we would call a research ship are clearly apparent. In 1766, the Royal Society hired Cook to travel to the Pacific Ocean to observe and record the transit of Venus across the Sun. The ''Endeavour'' was a sturdy vessel, well designed and equipped for the ordeals she would face, and fitted out with facilities for her "research personnel", Joseph Banks. As is common with contemporary research vessels, ''Endeavour'' also carried out more than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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