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USCGC Humboldt (WAVP-372)
USS ''Humboldt'' (AVP-21) was a United States Navy Barnegat class seaplane tender, ''Barnegat''-class small seaplane tender in commission from 1941 to 1947 that served in the Atlantic during World War II. She was briefly reclassified as a miscellaneous auxiliary and redesignated AG-121 during 1945. After the war, she was in commission in the United States Coast Guard as the United States Coast Guard Cutter, cutter USCGC ''Humboldt'' (WAVP-372), later WHEC-372, from 1949 to 1969, Construction and commissioning ''Humboldt'' (AVP-21) was Keel-laying, laid down at the Boston Navy Yard, Massachusetts, on 6 September 1940. She was Ship naming and launching, launched on 17 March 1941, sponsored by Mrs. William T. Tarrant, and Ship commissioning, commissioned on 7 October 1941. United States Navy service World War II South Atlantic operations Following rigorous shakedown cruise, shakedown training off the United States East Coast, ''Humboldt'' sailed from Norfolk, Virginia, Norfolk, V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston Navy Yard
The Boston Navy Yard, originally called the Charlestown Navy Yard and later Boston Naval Shipyard, was one of the oldest shipbuilding facilities in the United States Navy. It was established in 1801 as part of the recent establishment of the new United States Department of the Navy, U.S. Department of the Navy in 1798. After 175 years of military service, it was decommissioned as a naval installation on 1 July 1974. The property is administered by the National Park Service, becoming part of Boston National Historical Park. Enough of the yard remains in operation to support the moored USS Constitution, USS ''Constitution'' ("Old Ironsides") of 1797, built as one of the Original six frigates of the United States Navy, original six heavy frigates for the revived American navy, and the oldest warship still commissioned in the United States Navy and afloat in the world. , a 1943 World War II-era Fletcher-class destroyer, ''Fletcher''-class destroyer serving as a museum ship, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
5"/38 Caliber Gun
The Mark 12 5"/38 caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships. The 38 caliber barrel was a mid-length compromise between the previous United States standard 5"/51 low-angle gun and 5"/25 anti-aircraft gun. United States naval gun terminology indicates the gun fired a projectile in diameter, and the barrel was 38 calibers long. The increased barrel length provided greatly improved performance in both anti-aircraft and anti-surface roles compared to the 5"/25 gun. However, except for the barrel length and the use of semi-fixed ammunition, the 5"/38 gun was derived from the 5"/25 gun. Both weapons had power ramming, which enabled rapid fire at high angles against aircraft. The 5"/38 entered service on , commissioned in 1934, the first new destroyer design since the last ''Clemson'' was built in 1922. The base ring mount, which improved the effective rate of fire, entered service on , commissioned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warrant Officer
Warrant officer (WO) is a rank or category of ranks in the armed forces of many countries. Depending on the country, service, or historical context, warrant officers are sometimes classified as the most junior of the commissioned ranks, the most senior of the non-commissioned officer (NCO) ranks, or in a separate category of their own. Warrant officer ranks are especially prominent in the militaries of Commonwealth nations and the United States. The name of the rank originated in medieval England. It was first used during the 13th century, in the Royal Navy, where Warrant Officers achieved the designation by virtue of their accrued experience or seniority, and technically held the rank by a warrant—rather than by a formal commission (as in the case of a commissioned officer). Nevertheless, WOs in the British services have traditionally been considered and treated as distinct from non-commissioned officers, as such (even though neither group has, technically, held a commiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commissioned Officer
An officer is a person who holds a position of authority as a member of an armed force or uniformed service. Broadly speaking, "officer" means a commissioned officer, a non-commissioned officer, or a warrant officer. However, absent contextual qualification, the term typically refers only to a force's ''commissioned officers'', the more senior members who derive their authority from a commission from the head of state. Numbers The proportion of officers varies greatly. Commissioned officers typically make up between an eighth and a fifth of modern armed forces personnel. In 2013, officers were the senior 17% of the British armed forces, and the senior 13.7% of the French armed forces. In 2012, officers made up about 18% of the German armed forces, and about 17.2% of the United States armed forces. Historically, however, armed forces have generally had much lower proportions of officers. During the First World War, fewer than 5% of British soldiers were officers (partly ... [...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] |
Fairbanks-Morse
Fairbanks, Morse and Company was an American manufacturing company in the late 19th and early 20th century. Originally a weighing scale manufacturer, it later diversified into pumps, engines, windmills, coffee grinders, radios, farm tractors, feed mills, locomotives, and industrial supplies until it was purchased by Penn Texas in 1958. There are three separate corporate entities that could be considered successors to the company, none of which is a complete and direct descendant of the original company. All claim the heritage of Fairbanks Morse and Company: * Fairbanks Scales is a privately owned company in Kansas City, Missouri, that manufactures scales * Fairbanks Morse Defense, a subsidiary company of Arcline Investment Management, is a company based in Beloit, Wisconsin, that manufactures and services engines * Fairbanks Nijhuis is a part of Pentair Water in Kansas City, Kansas, and manufactures pumps Founding and early history Fairbanks Morse and Company began in 1823 whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Coast Guard Cutter
United States Coast Guard Cutter is the term used by the U.S. Coast Guard for its commissioned vessels. They are or greater in length and have a permanently assigned crew with accommodations aboard. They carry the ship prefix USCGC. History of the USCG cutters The Revenue Marine and the Revenue Cutter Service, as it was known variously throughout the late 18th and the 19th centuries, referred to its ships as cutters. The term is English in origin and refers to a specific type of vessel, namely, "a small, decked ship with one mast and bowsprit, with a gaff mainsail on a boom, a square yard and topsail, and two jibs or a jib and a staysail." With general usage, that term came to define any vessel of the United Kingdom's HM Customs and Excise and the term was adopted by the U.S. Treasury Department at the creation of what would become the Revenue Marine. Since that time, no matter what the vessel type, the service has referred to its vessels with permanently assigned crew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casco Class Cutter
The ''Casco'' class was a large class of United States Coast Guard cutters in commission from the late 1940s through the late 1980s. They saw service as weather reporting ships in the Atlantic and Pacific Oceans until the early 1970s, and some saw combat service during the Vietnam War. Design Between 1941 and 1946, the United States Navy acquired 35 ''Barnegat''-class small seaplane tenders, designated "AVP" in the Navys alphanumeric hull numbering system and designed to logistically and administratively support a squadron of flying boats operating from undeveloped areas and, with a substantial anti-air, antisurface, and antisubmarine capability, to escort larger seaplane tenders. Most of them served during World War II, although even during the war the Navy determined the number of ''Barnegat''s to be surplus to requirements; as a result, one was completed as a catapult training ship for Navy floatplane pilots (retaining its "AVP" designation) and four were converted during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviation Fuel
Aviation fuels are petroleum-based fuels, or petroleum and synthetic fuel blends, used to power aircraft. They have more stringent requirements than fuels used for ground use, such as heating and road transport, and contain additives to enhance or maintain properties important to fuel performance or handling. They are kerosene-based (JP-8 and Jet A-1) for gas turbine-powered aircraft. Piston-engined aircraft use leaded gasoline and those with diesel engines may use jet fuel (kerosene). By 2012, all aircraft operated by the U.S. Air Force had been certified to use a 50-50 blend of kerosene and synthetic fuel derived from coal or natural gas as a way of stabilizing the cost of fuel. Specific energy (energy per unit mass) is an important criterion in selecting fuel for an aircraft. The much higher energy storage capability of hydrocarbon fuels compared to batteries has so far prevented electric aircraft using electric batteries as the main propulsion energy store becoming viabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Squadron (aviation)
A squadron in air force An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an a ..., army aviation, or naval aviation is a Military unit, unit comprising a number of military aircraft and their aircrews, usually of the same type, typically with 12 to 24 aircraft, sometimes divided into three or four flight (military unit), flights, depending on aircraft type and air force. Land-based squadrons equipped with heavier type aircraft such as long-range bombers, cargo aircraft, or air refueling tankers have around 12 aircraft as a typical authorization, while most land-based fighter equipped units have an authorized number of 18 to 24 aircraft. In naval aviation, sea-based and land-based squadrons will typically have smaller numbers of aircraft, ranging from as low as four for early warning t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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