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USS Dewey (YFD-1)
USS ''Dewey'' (YFD-1) was a floating dry dock built for the United States Navy in 1905, and named for American Admiral George Dewey. The auxiliary floating drydock was towed to her station in the Philippines in 1906 and remained there until scuttled by American forces in 1942, to prevent her falling into the hands of the invading Japanese. History Laid down in early 1905 at Maryland Steel Co. of Sparrows Point, Maryland, ''Dewey'' was floated for the first time on 10 June 1905. She was christened on that date with the traditional bottle of wine by Miss Endicott, the daughter of U.S. Navy Chief of Yards Mordecai T. Endicott. ''Dewey'' was very large and state of the art at her time. ''Dewey'' was in length, had a beam width of , and a working deck surface wide. The sidewalls reached above the deck. She displaced 18,500 tons empty. She had a draft of from . Ballast pontoons tanks were flooded with water to submerge or pumped dry to raise the ship. The wide sidewalls co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Pennsylvania (ACR-4) In Drydock Dewey
USS ''Pennsylvania'' may refer to: * was a 130-gun ship of the line A ship of the line was a type of naval warship constructed during the Age of Sail from the 17th century to the mid-19th century. The ship of the line was designed for the naval tactic known as the line of battle, which depended on the two colu ... launched in 1837 and burned to prevent capture in 1861 * A screw steamer, laid down as ''Keywaden'' in 1863 but never launched, was renamed ''Pennsylvania'' while she lay in the ways before being broken up in 1884 * was the lead ship of the launched in 1903; renamed ''Pittsburgh'' in 1912; scrapped in 1931 * was the lead ship of the launched in 1915 and sunk during atomic bomb testing in 1948 * is an launched in 1988 and currently in service See also * * * {{DEFAULTSORT:Pennsylvania, USS United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sparrows Point
Sparrow's Point is an unincorporated community in Baltimore County, Maryland, United States, adjacent to Dundalk. Named after Thomas Sparrow, landowner, it was the site of a very large industrial complex owned by Bethlehem Steel, known for steelmaking and shipbuilding. In its heyday in the mid-20th century, it was the largest steel mill in the world. The site of the former Bethlehem Sparrows Point Shipyard and steel mill is now renamed Tradepoint Atlantic in a revitalization program to clean up the environment and make it one of the largest ports on the East Coast of the United States. Today Sparrows Point is home to many distribution centers, fulfillment centers, training lots, storage lots, and the like, including those operated by Under Armour, Amazon, Home Depot, Volkswagen, and McCormick & Company. History Sparrow's Point was originally marshland home to Native American tribes until being granted to one Thomas Sparrow Jr. (1620 - 1674) by Cecilius Calvert, 2nd Baron Baltimor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Class Travel
First class is the most luxurious and most expensive travel class of seats and service on a train, passenger ship, airplane, bus, or other system of transport. Compared to business class and economy class, it offers the best service and most comfortable accommodation. Aviation The First class (aviation), first-class section of a fixed-wing jet airliner is typically toward the front of the aircraft. Many airlines have removed first class altogether from their international flights, offering business class as their highest level of international service. First class passengers are usually allowed into Airport lounge, lounges at airports while they wait for their flights. Railways While first-class travel accommodation is common in intercity public transport rail services, they have become increasingly prevalent for commuters' short-distance daily travel, especially in rapid transit contexts, rather than longer-distance regional rail. Australia Australia has internal rail opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrack
Barracks are usually a group of long buildings built to house military personnel or laborers. The English word originates from the 17th century via French and Italian from an old Spanish word "barraca" ("soldier's tent"), but today barracks are usually permanent buildings for military accommodation. The word may apply to separate housing blocks or to complete complexes, and the plural form often refers to a single structure and may be English plurals#Plural in form but singular in construction, singular in construction. The main object of barracks is to separate soldiers from the civilian population and reinforce discipline, training, and ''esprit de corps''. They have been called "discipline factories for soldiers". Like industrial factories, some are considered to be shoddy or dull buildings, although others are known for their magnificent architecture such as Collins Barracks, Dublin, Collins Barracks in Dublin and others in Paris, Berlin, Madrid, Vienna, or London. From the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: ''direct lift'', ''displacement'', and ''gravity'' pumps. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. When a casing contains only one revolving impeller, it is called a single-stage pump. Whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Tank
A water tank is a container for storing water. Water tanks are used to provide storage of water for use in many applications, drinking water, irrigation agriculture, fire suppression, agricultural farming, both for plants and livestock, chemical manufacturing, food preparation as well as many other uses. Water tank parameters include the general design of the tank, and choice of construction materials, linings. Various materials are used for making a water tank: plastics (polyethylene, polypropylene), fiberglass, concrete, stone, steel (welded or bolted, carbon, or stainless). Earthen pots, such as matki used in South Asia, can also be used for water storage. Water tanks are an efficient way to help developing countries to store clean water. History Throughout history, wood, ceramic and stone tanks have been used as water tanks. These containers were all naturally occurring and some man made and a few of these tanks are still in service. The Indus Valley civilization (30 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontoon (boat)
A pleasure boat with two lengthwise pontoons A pontoon boat is a flattish boat that relies on floats to remain buoyant. These pontoons (also called ''tubes'') contain much reserve buoyancy and allow designers to create large deck plans fitted with a variety of accommodations including expansive lounge areas, stand-up bars, and sun pads. Better tube designs have allowed builders to put ever-increasing amounts of horsepower on the stern. Pontoon boat drafts may be as shallow as eight inches (20 centimetres), which reduces risk of running aground and underwater damage, this allows it to come close to shore to pick up and drop off loads. History A pontoon ferry crossing the Zambezi at Kazungula The 1951 invention of the pontoon motorboat in the United States is credited to a farmer who lived on the Horseshoe chain of lakes, near Richmond, Minnesota. Ambrose Weeres put a wooden platform on two columns of steel barrels welded together end-to-end, creating a sturdy deck that would ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ballast Tank
A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct trim or list, to provide a more even load distribution along the hull to reduce structural hogging or sagging stresses, or to increase draft, as in a semi-submersible vessel or platform, or a SWATH, to improve seakeeping. Using water in a tank provides easier weight adjustment than the stone or iron ballast used in older vessels, and makes it easy for the crew to reduce a vessel's draft when it enters shallower water, by temporarily pumping out ballast. Airships use ballast tanks mainly to control buoyancy and correct trim. History The basic concept behind the ballast tank can be seen in many forms of aquatic life, such as the blowfish or argonaut octopus. The concept has been invented and reinvented many times by humans to serve a variety of purpo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draft (hull)
The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water. The more heavily a vessel is loaded, the deeper it sinks into the water, and the greater its draft. After construction, the shipyard creates a table showing how much water the vessel displaces based on its draft and the density of the water (salt or fresh). The draft can also be used to determine the weight of cargo on board by calculating the total displacement of water, accounting for the content of the ship's bunkers, and using Archimedes' principle. The closely related term "trim" is defined as the difference between the forward and aft ... [...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" (or "load lines"). A mer ... [...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 extremities 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 cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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