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USS Ajax (1869)
USS ''Ajax'', originally named USS ''Manayunk'' after a town in Pennsylvania, was a single-turreted built for the Union Navy during the American Civil War. Completed after the end of the war, ''Ajax'' was laid up until 1871, although she received her new name in 1869. The ship was briefly activated in 1871, before a much longer commission began in 1874–1875. She was assigned to the North Atlantic Squadron during this time. ''Ajax'' was again placed in reserve in 1891. The ship was on militia duty when the Spanish–American War began and she was recommissioned in 1898, to defend Baltimore, Maryland, although she was decommissioned later in the year before the necessary refit could be completed. ''Ajax'' was sold for scrap in 1899. Design ''Ajax'' was long overall, had a beam of and had a maximum draft of . ''Ajax'' had a tonnage of 1,034 tons burthen and displaced . Her crew consisted of 100 officers and enlisted men. ''Ajax'' was powered by a two-cylinder horizonta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish–American War
The Spanish–American War (April 21 – August 13, 1898) was fought between Restoration (Spain), Spain and the United States in 1898. It began with the sinking of the USS Maine (1889), USS ''Maine'' in Havana Harbor in Cuba, and resulted in the U.S. acquiring sovereignty over Puerto Rico, Guam, and the Philippines, and establishing a protectorate over Cuba. It represented U.S. intervention in the Cuban War of Independence and Philippine Revolution, with the latter later leading to the Philippine–American War. The Spanish–American War brought an end to almost four centuries of Spanish presence in the Americas, Asia, and the Pacific; the United States meanwhile not only became a major world power, but also gained several island possessions spanning the globe, which provoked rancorous debate over the wisdom of expansionism. The 19th century represented a clear decline for the Spanish Empire, while the United States went from a newly founded country to a rising power. In 1895, C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muzzle-loading
A muzzleloader is any firearm in which the user loads the projectile and the propellant charge into the muzzle end of the gun (i.e., from the forward, open end of the gun's barrel). This is distinct from the modern designs of breech-loading firearms, in which user loads the ammunition into the breech end of the barrel. The term "muzzleloader" applies to both rifled and smoothbore type muzzleloaders, and may also refer to the marksman who specializes in the shooting of such firearms. The firing methods, paraphernalia and mechanism further divide both categories as do caliber (from cannons to small-caliber palm guns). Modern muzzleloading firearms range from reproductions of sidelock, flintlock and percussion long guns, to in-line rifles that use modern inventions such as a closed breech, sealed primer and fast rifling to allow for considerable accuracy at long ranges. Modern mortars use a shell with the propelling charge and primer attached at the base. Unlike older muzzleloa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alban C
Alban may refer to: *Alban (surname) *Alban (given name) *Alban people, Latin people from the city of Alba Longa. *Things or people from or related to Alba (Gaelic for 'Scotland') *Alban wine, a wine of ancient Rome from Colli Albani * Alban Vineyards, California wine produced by vintner John Alban *An alternative name used in Spain for wines made from the Palomino (grape) *A minor Kazakh Jüz "horde", numbering ca. 100,000 Places *Alban hills of Rome, Italy ( also known as Colli Albania ) * Alban, Tarn, France * Alban, Wisconsin, US, a town *Alban (community), Wisconsin, US, an unincorporated community *Alban, Ontario, Canada *Albán, Colombia *Albán, Cundinamarca, Colombia * Yr Alban, Welsh for Scotland See also *Albany (other) *Albania (other) *Albanian (other) *Saint-Alban (other) * St. Albans (other) *St Albans railway station (other) St Albans station may refer to: * St Albans City railway station St Albans Cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from stern sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Displacement (ship)
The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used. Ship displacement varies by a vessel's degree of load, from its empty weight as designed (known as "lightweight tonnage") to its maximum load. Numerous specific terms are used to describe varying levels of load and trim, detailed below. Ship displacement should not be confused with measurements of volume or capacity typically used for commercial vessels and measured by tonnage: net tonnage and gross tonnage. Calculation The process of determining a vessel's displacement begins with measuring its draft.George, 2005. p. 5. This is accomplished by means of its "draft marks". A merchant vessel has t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship is a determined depth of the vessel below the waterline, measured vertically to its hull's lowest—its propellers, or keel, or other reference point. Draft varies according to the loaded condition of the ship. A deeper draft means the ship will have greater vertical depth below the waterline. Draft is used in under keel clearance calculations, where the draft is calculated with the available depth of water (from Electronic navigational charts) to ensure the ship can navigate safely, without grounding. Navigators can determine their draught by calculation or by visual observation (of the ship's painted load lines). Related terminology A ship's draft/draught is the "depth of the vessel below the waterline measured vertically to the lowest part of the hull, propellers, or other reference point". That is, the draft or draught is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beam (nautical)
The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer sides of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water. Generally speaking, the wider the beam of a ship (or boat), the more initial stability it has, at the expense of secondary stability in the event of a capsize, where more energy is required to right the vessel from its inverted position. A ship that heels on her ''beam ends'' has her deck beams nearly vertical. Typical values Typical length-to-beam ratios ( aspect ratios) for small sailboats are from 2:1 (dinghies to trailerable sailboats around ) to 5:1 (racing sailboats over ). Large ships have widely varying beam ratios, some as large as 20:1. Rowing shells designed for flatwater racing may have length to beam ratios as high as 30:1, while a cora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Length Overall
Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth (for example, £2.50 per metre LOA). LOA is usually measured on the hull alone. For sailing ships, this may ''exclude'' the bowsprit and other fittings added to the hull. This is how some racing boats and tall ships use the term LOA. However, other sources may include bowsprits in LOA. Confusingly, LOA has different meanings. "Sparred length", "Total length including bowsprit", "Mooring length" and "LOA including bowsprit" are other expressions that might indicate the full length of a sailing ship. LOD Often used to distinguish between the length of a vessel including projections (e.g. bow sprits, etc.) from the length of the hull itself, the Length on Deck or LOD is often reported. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltimore
Baltimore is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census and estimated at 568,271 in 2024, it is the 30th-most populous U.S. city. The Baltimore metropolitan area is the 20th-largest metropolitan area in the country at 2.84 million residents. The city is also part of the Washington–Baltimore combined statistical area, which had a population of 9.97 million in 2020. Baltimore was designated as an independent city by the Constitution of Maryland in 1851. Though not located under the jurisdiction of any county in the state, it forms part of the central Maryland region together with the surrounding county that shares its name. The land that is present-day Baltimore was used as hunting ground by Paleo-Indians. In the early 1600s, the Susquehannock began to hunt there. People from the Province of Maryland established the Port of Baltimore in 1706 to support the tobacco trade with Europe and established the Town ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Militia
A militia ( ) is a military or paramilitary force that comprises civilian members, as opposed to a professional standing army of regular, full-time military personnel. Militias may be raised in times of need to support regular troops or serve as a pool of available manpower for regular forces to draw from. When acting independently, militias are generally unable to hold ground against regular forces. Militias commonly support regular troops by skirmishing, holding fortifications, or conducting irregular warfare, instead of undertaking offensive campaigns by themselves. However, militias may also engage in defense activities to protect a community, its territory, property, and laws. For example, naval militias may comprise fishermen and other civilians which are organized and sanctioned by a state to enforce its maritime boundaries. Beginning in the late 20th century, some militias (in particular officially recognized and sanctioned militias of a government) act as professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Atlantic Squadron
The North Atlantic Squadron was a section of the United States Navy operating in the North Atlantic. It was renamed as the North Atlantic Fleet in 1902. In 1905 the European and South Atlantic squadrons were abolished and absorbed into the North Atlantic Fleet. On 1 January 1906, the Navy's Atlantic Fleet was established by combining the North Atlantic Fleet with the South Atlantic Squadron. Commanders-in-Chief North Atlantic Squadron * Commodore/Rear Admiral James S. Palmer 1 November 1865 – 7 December 1867 * Rear Admiral Henry K. Hoff 22 February 1868 – 19 August 1869 * Rear Admiral Charles H. Poor 19 August 1869 – 9 June 1870 * Rear Admiral Samuel Phillips Lee June 1870 – May 1873 * Rear Admiral Gustavus H. Scott May 1873 – 13 June 1874 * Rear Admiral James Robert Madison Mullany 13 June 1874 – January 1876 * Rear Admiral William E. Le Roy January 1876 – September 1876 * Rear Admiral Stephen Decatur Trenchard September 1876 – September 1878 * Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
