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USCGC Morgenthau (WHEC-722)
The USCGC ''Morgenthau'' (WHEC-722), was the eighth of twelve 378-foot dual-powered turbine/diesel high endurance cutters (WHECs) built by Avondale Shipyards in New Orleans, Louisiana. The Coast Guard commissioned the ''Morgenthau'' on March 10, 1969. After 48 years of continuous service the U.S. Coast Guard decommissioned the ''Morgenthau'' on April 18, 2017, and the ship was sold to Vietnam. On 27 May 2017 the Vietnam Coast Guard commissioned the former cutter as patrol craft ''CSB-8020''. In the 1960s-1970s the "jet-powered" ''Hamilton''-class cutters were state-of-the-art and technologically innovative. In 2011 the Coast Guard acknowledged its ''Hamilton''-class cutters had far exceeded their planned service life and phased them out over the next ten years, replacing them with National Security Cutters. In the 1960s the most distinctive aspect of these ''Hamilton''-class cutters were the twin turbine engines capable of propelling the cutter from 0 to 30+ knots in 60 second ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Turbine Engine
A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the direction of flow: * a rotating gas compressor * a combustor * a compressor-driving turbine. Additional components have to be added to the gas generator to suit its application. Common to all is an air inlet but with different configurations to suit the requirements of marine use, land use or flight at speeds varying from stationary to supersonic. A propelling nozzle is added to produce thrust for flight. An extra turbine is added to drive a propeller (turboprop) or ducted fan (turbofan) to reduce fuel consumption (by increasing propulsive efficiency) at subsonic flight speeds. An extra turbine is also required to drive a helicopter rotor or land-vehicle transmission (turboshaft), marine propeller or electrical generator (power turbine). Greater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-submarine Warfare
Anti-submarine warfare (ASW, or in older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typically carried out to protect friendly shipping and coastal facilities from submarine attacks and to overcome blockades. Successful ASW operations typically involved a combination of sensor and weapon technologies, along with effective deployment strategies and sufficiently trained personnel. Typically, sophisticated sonar equipment is used for first detecting, then classifying, locating, and tracking a target submarine. Sensors are therefore a key element of ASW. Common weapons for attacking submarines include torpedoes and naval mines, which can both be launched from an array of air, surface, and underwater platforms. ASW capabilities are often considered of significant strategic importance, particularly following provocative instan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold War
The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because there was no large-scale fighting directly between the two superpowers, but they each supported major regional conflicts known as proxy wars. The conflict was based around the ideological and geopolitical struggle for global influence by these two superpowers, following their temporary alliance and victory against Nazi Germany and Imperial Japan in 1945. Aside from the nuclear arsenal development and conventional military deployment, the struggle for dominance was expressed via indirect means such as psychological warfare, propaganda campaigns, espionage, far-reaching embargoes, rivalry at sports events, and technological competitions such as the Space Race. The Western Bloc was led by the United States as well as a number of othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbine Engines
A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator.Munson, Bruce Roy, T. H. Okiishi, and Wade W. Huebsch. "Turbomachines." Fundamentals of Fluid Mechanics. 6th ed. Hoboken, NJ: J. Wiley & Sons, 2009. Print. A turbine is a turbomachine with at least one moving part called a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades so that they move and impart rotational energy to the rotor. Early turbine examples are windmills and waterwheels. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention of the reaction turbine, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Security Cutters
The Legend-class cutter, also known as the National Security Cutter (NSC) and Maritime Security Cutter, Large, is the largest active patrol cutter class of the United States Coast Guard. Entering into service in 2008, the Legend-class is the largest of several new cutter designs developed as part of the Integrated Deepwater System Program. Mission These vessels can be used for a variety of tasks, including environmental protection, search and rescue, fisheries protection, ports, waterways, and coastal security, counterterrorism activities, law enforcement, drug interdiction, defense operations, and other military/naval operations, including assigned naval warfare tasks with the U.S. Navy. Design The Legend-class cutters are the second-longest of all U.S. Coast Guard cutters, behind the research icebreaker , and will replace the 12 ''Hamilton''-class cutters in service. These cutters are envisioned by the Coast Guard as being able to undertake the entire range of the high-end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Orleans, Louisiana
New Orleans ( , ,New Orleans Merriam-Webster. ; french: La Nouvelle-Orléans , es, Nueva Orleans) is a consolidated city-parish located along the Mississippi River in the southeastern region of the of Louisiana. With a population of 383,997 according to the 2020 U.S. census, it is the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USCG High Endurance Cutter
The designation of high endurance cutter (WHEC) was created in 1965 when the United States Coast Guard adopted its own designation system. High endurance cutters encompass the largest cutters previously designated by the United States Navy as gunboats, destroyer escorts, and seaplane tenders. The term High Endurance Cutter may refer to any of five individual ship classes that have seen service in the Coast Guard. *The Legend-class cutter is the newest class in this category. *The is a contemporary design. These vessels are also known as Secretary- or Hero-class cutters. They are currently being replaced by newer Legend-class cutters. *The was a World War II design, the last was retired in the 1970s. *The was a pre-World War II design, the last was retired in the 1980s under the Philippine Navy. *The , a class from 1936 to the mid-1980s. Class history The US Coast Guard's predecessor, the U.S. Revenue Cutter Service designated cutters and craft based on classes. From appr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M240
The M240 – officially the Machine Gun, 7.62 mm, M240 – is the U.S. military designation for the FN MAG, a family of belt-fed, gas-operated medium machine guns that chamber the 7.62×51mm NATO cartridge. The M240 has been used by the United States Armed Forces since the late 1970s. It is used extensively by infantry, most often in rifle companies, as well as on ground vehicles, watercraft and aircraft. Though it is heavier than some comparable weapons, it is highly regarded for reliability and its standardization among NATO members is a major advantage. All variants are fed from disintegrating belts and are capable of firing most types of 7.62 mm (.30/.308 cal) NATO ammunition. M240 variants can be converted to use non-disintegrating belts. There are significant differences in weight and some features among some versions which restrict the interchangeability of parts. The M240s used by the U.S. military are currently manufactured by FN America, the Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M2 Browning
The M2 machine gun or Browning .50 caliber machine gun (informally, "Ma Deuce") is a heavy machine gun that was designed towards the end of World War I by John Browning. Its design is similar to Browning's earlier M1919 Browning machine gun, which was chambered for the .30-06 cartridge. The M2 uses Browning's larger and more powerful .50 BMG (12.7 mm) cartridge. The design has had many designations; the official U.S. military designation for the current infantry type is Browning Machine Gun, Cal. .50, M2, HB, Flexible. It is effective against infantry, unarmored or lightly armored vehicles and boats, light fortifications, and low-flying aircraft. The gun has been used extensively as a vehicle weapon and for aircraft armament by the United States since the 1930s. It was heavily used during World War II, the Korean War, the Vietnam War, the Falklands War, the Soviet–Afghan War, the Gulf War, the Iraq War, and the War in Afghanistan. It is the primary heavy machine gun of NA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autocannons
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber ( or more) armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal performance than machine guns, due to the use of larger/heavier munitions (most often in the range of , but bigger calibers also exist), but are usually smaller than tank guns, howitzers, field guns or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or occasionally "rotary cannon", for short (particularly on aircraft). Autocannons are heavy weapons that are unsuitable for use by infantry. Due to the heavy weight and recoil, they are typically installed on fixed mounts, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M242 Bushmaster
The M242 Bushmaster chain gun is a 25 mm (25×137mm) single-barrel chain-driven autocannon. It is used extensively by the U.S. military, such as in the Bradley fighting vehicle, as well as by other NATO members and some other nations in ground combat vehicles and various watercraft. Hughes Helicopters in Culver City, California was the original designer and manufacturer. McDonnell Douglas Helicopters acquired Hughes Helicopters in 1985, and merged into Boeing Corporation in 1997. In 2002, it was sold again to Alliant Techsystems, which merged with Orbital Sciences Corporation in 2015 to form Orbital Science ATK and was, in turn, bought out by Northrop Grumman in 2018. , Northrop Grumman Innovation Systems produces the gun. It is an externally powered, chain-driven, single-barrel weapon, that may be fired in semi-automatic, burst, or automatic modes. It is fed by a metallic link belt and has dual-feed capability. The term "chain gun" derives from the use of a roller cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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