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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] |
USS Silversides Submarine Museum
USS ''Silversides'' (SS/AGSS-236) is a ''Gato''-class submarine, the first ship of the United States Navy to be named for the silversides. ''Silversides'' was one of the most successful submarines in the Pacific Theater of World War II, with 23 confirmed sinkings, totalling more than of shipping. She received a Presidential Unit Citation for cumulative action over four patrols, and twelve battle stars. She presently serves as a museum ship in Muskegon, Michigan, and is a National Historic Landmark. Construction Her keel was laid down on 4 November 1940, by the Mare Island Navy Yard in Vallejo, California. She was launched on 26 August 1941, sponsored by Mrs. Elizabeth H. Hogan, and commissioned on 15 December 1941, with Lieutenant Commander Creed C. Burlingame in command. Service in World War II First patrol: April–June 1942 After shakedown off the California coast, ''Silversides'' set course for Hawaii, arriving at Pearl Harbor on 4 April 1942. Departing Pear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muskegon, Michigan
Muskegon ( ') is a city in Michigan. It is the county seat of Muskegon County. Muskegon is known for fishing, sailing regattas, pleasure boating, and as a commercial and cruise ship port. It is a popular vacation destination because of the expansive freshwater beaches, historic architecture, and public art collection. It is the most populous city along the western shore of Michigan. At the 2020 United States Census the city population was 38,318. It is at the southwest corner of Muskegon Township, but is administratively autonomous. Muskegon is the center of the Muskegon Metropolitan Statistical Area, which is coextensive with Muskegon County and had a population of 173,566 in 2019. It is also part of the larger Grand Rapids- Kentwood-Muskegon-Combined Statistical Area with a population of 1,433,288. History Early inhabitants Human occupation of the Muskegon area goes back seven or eight thousand years to the nomadic Paleo-Indian hunters who occupied the area following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Park Service
The National Park Service (NPS) is an List of federal agencies in the United States, agency of the Federal government of the United States, United States federal government within the United States Department of the Interior, U.S. Department of the Interior that manages all List of areas in the United States National Park System, national parks, most National monument (United States), national monuments, and other natural, historical, and recreational properties with various title designations. The United States Congress, U.S. Congress created the agency on August 25, 1916, through the National Park Service Organic Act. It is headquartered in Washington, D.C., within the main headquarters of the Department of the Interior. The NPS employs approximately 20,000 people in 423 individual units covering over 85 million acres in List of states and territories of the United States, all 50 states, the Washington, D.C., District of Columbia, and Territories of the United States, US territ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megawatt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brake 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 ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patrol Boat
A patrol boat (also referred to as a patrol craft, patrol ship, or patrol vessel) is a relatively small naval vessel generally designed for coastal defence, border security, or law enforcement. There are many designs for patrol boats, and they generally range in size. They may be operated by a nation's navy, coast guard, police, or customs, and may be intended for marine (" blue water"), estuarine (" green water"), or river (" brown water") environments. Per their name, patrol boats are primarily used to patrol a country's exclusive economic zone (EEZ), but they may also be used in other roles, such as anti- smuggling, anti-piracy, fishery patrols, immigration law enforcement, or search and rescue. Depending on the size, organization, and capabilities of a nation's armed forces, the importance of patrol boats may range from minor support vessels that are part of a coast guard, to flagships that make up a majority of a navy's fleet. Their small size and relatively low cost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 s ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder (engine)
In a reciprocating engine, the cylinder is the space in which a piston travels. The inner surface of the cylinder is formed from either a thin metallic liner (also called "sleeve") or a surface coating applied to the engine block. A piston is seated inside each cylinder by several metal piston rings, which also provide seals for compression and the lubricating oil. The piston rings do not actually touch the cylinder walls, instead they ride on a thin layer of lubricating oil. Steam engines The cylinder in a steam engine is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were cast in cast iron and later in steel. The cylinder casting can include other features such as valve ports and mounting feet. Internal combustion engines The cylinder is the space through which the piston travels, propelled to the energy generated from the combustion of the air/fuel mixture in the combustion chamber. In an ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knot (unit)
The knot () is a unit of speed equal to one nautical mile per hour, exactly (approximately or ). The ISO standard symbol for the knot is kn. The same symbol is preferred by the Institute of Electrical and Electronics Engineers ( IEEE), while kt is also common, especially in aviation, where it is the form recommended by the International Civil Aviation Organization (ICAO). The knot is a non- SI unit. The knot is used in meteorology, and in maritime and air navigation. A vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour. Definitions ;1 international knot = :1 nautical mile per hour (by definition), : (exactly), : (approximately), : (approximately), : (approximately) : (approximately). The length of the internationally agreed nautical mile is . The US adopted the international definition in 1954, having previously used the US nautical mile (). The UK adopted the international nautical mile definition in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gun Mount
A gun is a ranged weapon designed to use a shooting tube (gun barrel) to launch projectiles. The projectiles are typically solid, but can also be pressurized liquid (e.g. in water guns/cannons, spray guns for painting or pressure washing, projected water disruptors, and technically also flamethrowers), gas (e.g. light-gas gun) or even charged particles (e.g. plasma gun). Solid projectiles may be free-flying (as with bullets and artillery shells) or tethered (as with Taser guns, spearguns and harpoon guns). A large- caliber gun is also called a ''cannon''. The means of projectile propulsion vary according to designs, but are traditionally effected pneumatically by a high gas pressure contained within the barrel tube, produced either through the rapid exothermic combustion of propellants (as with firearms), or by mechanical compression (as with air guns). The high-pressure gas is introduced behind the projectile, pushing and accelerating it down the length of the tube ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antiaircraft
Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, subsurface ( submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defence. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. In some countries, such as Britain and Germany during the Second World War, the Soviet Union, and modern NATO and the United States, ground-based air defence and air defence airc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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