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Active-class Patrol Boat
The ''Active''-class patrol boat was one of the most useful and long-lasting classes of United States Coast Guard cutters. Of the 35 built in the 1920s, 16 were still in service during the 1960s. The last to be decommissioned from active service was the in 1970; the last in actual service was the , which sank after an accidental collision in 1978. Design and construction The ''Active''-class was designed for trailing the "mother ships" along the outer line of patrol during Prohibition. They were constructed at a cost of $63,173 USD each ($979,038.74 in 2021 rates). They gained a reputation for durability that was only enhanced by their re-engined in the late 1930s; their original 6-cylinder Winton 114-6 diesels were replaced by significantly more powerful 8-cylinder units that used the original engine beds and gave the vessels an additional 3 knots. They were meant to be able to stay at sea for long periods of time in any kind of weather, and were able to expand berthing sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown, Boveri & Cie
Brown, Boveri & Cie. (Brown, Boveri & Company; BBC) was a Swiss group of electrical engineering companies. It was founded in Zürich, in 1891 by Charles Eugene Lancelot Brown and Walter Boveri who worked at the Maschinenfabrik Oerlikon. In 1970 BBC took over the Maschinenfabrik Oerlikon. In 1988 it merged with ASEA to form ABB. Early History of BBC Brown Boveri BBC Brown Boveri was established in 1891. The company was one of only a few multinational corporations to operate subsidiaries that were larger than the parent company. Because of the limitations of the Swiss domestic market, Brown Boveri established subsidiaries throughout Europe relatively early in its history, and at times had difficulty maintaining managerial control over some of its larger operating units. The merger with ASEA, a company which was praised for its strong management, was expected to help Brown Boveri reorganize and reassert control over its vast international network. Activity in Britain Brown Bove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Pump (internal Combustion Engine)
The oil pump is an internal combustion engine part that circulates engine oil under pressure to the rotating bearings, the sliding pistons and the camshaft of the engine. This lubricates the bearings, allows the use of higher-capacity fluid bearings and also assists in cooling the engine. As well as its primary purpose for lubrication, pressurized oil is increasingly used as a hydraulic fluid to power small actuators. One of the first notable uses in this way was for hydraulic tappets in camshaft and valve actuation. Increasingly common recent uses may include the tensioner for a timing belt or variators for variable valve timing systems. Pumps The type of pump used varies. Gear pumps trochoid pumps and vane pumps are all commonly used. Plunger pumps have been used in the past, but these are now only used rarely, for small engines. To avoid the need for priming, the pump is always mounted low-down, either submerged or around the level of the oil in the sump. A short pick-up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buoy Tender
A buoy tender is a type of vessel used to maintain and replace navigational buoys. This term can also apply to an actual person who does this work. The United States Coast Guard uses buoy tenders to accomplish one of its primary missions of maintaining all U.S. aids to navigation (ATON). The Canadian Coast Guard uses multi-use vessels (most being icebreakers) with tasks including buoy tending. Types of coast guard buoy tenders United States Coast Guard *240' *225' USCG seagoing buoy tender (WLB) *175' USCG coastal buoy tender (WLM) *100' USCG inland buoy tender ( WLI) *100' USCG inland construction tender (WLIC) * 75' River buoy tender ( WLR) * 75' Inland construction tender (WLIC) * 65' River buoy tender ( WLR) * 65' Inland buoy tender ( WLI) * 49' Buoy utility stern loading boat (BUSL) * Other miscellaneous aids to navigation boats Canadian Coast Guard *272' *272' *228' *228' *198' *180' *179' *180' *144' *125' *66' Further reading * United States Coast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Submarine Ro-32
''Ro-32'', originally named ''Submarine No. 71'', was an Imperial Japanese Navy ''Kaichu''-Type submarine of the ''Kaichu'' V (''Toku Chu'') subclass. She was in commission from 1924 to 1938, seeing service in the waters of Formosa and Japan, then served as a stationary training hulk during World War II. Design and description The submarines of the ''Kaichu'' V sub-class were designed for anti-shipping operations and carried more fuel and had greater range and a heavier gun armament than preceding ''Kaichu''-type submarines. They displaced surfaced and submerged. The submarines were long and had a beam of and a draft of . They had a diving depth of . For surface running, the submarines were powered by two Sulzer diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, they had a range of — although the Imperial Japanese Navy officially announced it as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USCGC McLane (WSC-146)
USCGC ''McLane'' (WSC-146) is a United States Coast Guard ''Active''-class patrol boat in commission from 1927 to 1971. She was named for Louis McLane, (1786–1857) who was appointed in 1833 as United States Secretary of State. In May 1966, she was redesignated as (WMEC-146). Development and design ''Alert''-class ships were designed for trailing " mother ships" along the outer line of patrol during Prohibition. They were constructed at a cost of $63,173 each. They gained a reputation for durability that was only enhanced by their re-engining in the late 1930s; their original 6-cylinder diesel engines were replaced by significantly more powerful 8-cylinder units that used the original engine beds and gave the vessels an additional of speed. All served in World War II and two, and , were lost during the war in the 1944 Great Atlantic hurricane. Ten were refitted as buoy tenders during the war and reverted to patrol work afterward. Originally designated WPC, for pat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called 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). Diesel engines work by compressing only air, or air plus 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 the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is une ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lansing, Michigan
Lansing () is the capital of the U.S. state of Michigan. It is mostly in Ingham County, although portions of the city extend west into Eaton County and north into Clinton County. The 2020 census placed the city's population at 112,644, making it the sixth largest city in Michigan. The population of its metropolitan statistical area ( MSA) was 541,297 at the 2020 census, the third largest in the state after metropolitan Detroit and Grand Rapids. It was named the new state capital of Michigan in 1847, ten years after Michigan became a state. The Lansing metropolitan area, colloquially referred to as "Mid-Michigan", is an important center for educational, cultural, governmental, commercial, and industrial functions. Neighboring East Lansing is home to Michigan State University, a public research university with an enrollment of more than 50,000. The area features two medical schools, one veterinary school, two nursing schools, and two law schools. It is the site of the Mich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hill Diesel Engine Company
A hill is a landform that extends above the surrounding terrain. It often has a distinct summit. Terminology The distinction between a hill and a mountain is unclear and largely subjective, but a hill is universally considered to be not as tall, or as steep as a mountain. Geographers historically regarded mountains as hills greater than above sea level, which formed the basis of the plot of the 1995 film ''The Englishman who Went up a Hill but Came down a Mountain''. In contrast, hillwalkers have tended to regard mountains as peaks above sea level. The ''Oxford English Dictionary'' also suggests a limit of and Whittow states "Some authorities regard eminences above as mountains, those below being referred to as hills." Today, a mountain is usually defined in the UK and Ireland as any summit at least high, while the official UK government's definition of a mountain is a summit of or higher. Some definitions include a topographical prominence requirement, typically or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Motor
An electric motor is an Electric machine, electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a Electromagnetic coil, wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy. Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, Inverter (electrical), inverters or electrical generators. Electric motors may be classified by considerations such as power source type, construction, application and type of motion output. They can be powered by AC or DC, be Brushed motor, brushed or Brushless motor, brushless, single-phase, Two-phase electric power, two-p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other types of piston engines, as well as turbines, electric motors and other machinery. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit. History The development of the stea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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