SS Portmar (1919)
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SS Portmar (1919)
''Portmar'' was a United States-flagged merchant vessel that was constructed in response to World War I, operated by a succession of companies in the interwar period, then taken up for wartime shipping in World War II. The ship was built to Design 1013, as part of wartime orders by the United States Shipping Board (USSB). She was laid down by Northwest Steel of Portland, Oregon, with the name ''West Minsi''. The USSB order was cancelled during construction, but Northwest Steel completed the ship for private sale. She was sold to the Green Star Line before launching in November 1919, and was assigned the name ''Centaurus''. The freighter was sold to Nafra in 1920, then on to the Planet Steamship Company in 1923. In 1929, the ship was sold to the Calmar Steamship Company, who renamed the ship ''Portmar''. In late 1941, ''Portmar'' was chartered by the United States Department of War to carry supplies to the Philippines but due to the Japanese invasion of the Philippines was r ...
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Green Star Line
The Green Star Line was an American steamship shipping line created in 1919 and operated until 1923. Established by Irish businessmen as a response to the Shipping Board's campaign urging Americans to buy ships for wealth and patriotism during and after World War I. History Summary Mr. Joseph Mercadante, who also led the Nafra Steamship company, became a head of the Green Star Line (called the Green Star Steamship Corporation at the time). The Green Star Line initially purchased four steamers from Portland and set up its headquarters in Baltimore. The company initially ran four distinct services: one between Baltimore and the River Plate section of South America, one between Maryland and Bordeaux, one to Shanghai, China, and one to Antwerp and Rotterdam. Although it also ran services to Hamburg and Bremen in Germany, and continued operating the New York to Genoa line that was run by the Nafra Steamship company. By October 1921 the government and creditors became worried about ...
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Smoky Cape
Smoky Cape is a headland in Australia on the New South Wales Mid-North Coast. It lies just east of the town of South West Rocks, New South Wales, South West Rocks, and within the Hat Head National Park. Cape The cape was named ''Smoky Cape'' by James Cook, Captain Cook when he passed it on 13 May 1770, writing of "a point or headland, on which were fires that Caused a great Quantity of smook, which occasioned my giving it the name of Smooky Cape". ''Smook'' was his usual spelling of ''smoke'', the spelling for the cape now follows the modern spelling. The hills there were an important meeting place for aboriginal people from various surrounding areas, it's possible Cook saw fires from such a gathering. A lighthouse was proposed for the cape in 1886 and completed in 1891. Known as the Smoky Cape Lighthouse it was built from concrete and local granite Aggregate (geology), aggregate in an octagonal shape at the highest point on the cape. Fish Rock Fish Rock is a small bare ...
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Leg Irons
Legcuffs are physical restraints used on the ankles of a person to allow walking only with a restricted stride and to prevent running and effective physical resistance. Frequently used alternative terms are leg cuffs, (leg/ankle) shackles, footcuffs, fetters or leg irons. The term "fetter" shares a root with the word "foot". Shackles are typically used on prisoners and slaves. Leg shackles also are used for chain gangs to keep them together. Metaphorically, a fetter may be anything that restricts or restrains in any way, hence the word "''unfettered''". History The earliest fetters found in archaeological excavations date from the prehistoric age and are mostly of the puzzle lock type. Fetters are also referenced in ancient times in the Bible (, , ) A variety of restraint types already existed in Roman times. Some early versions of cup lock shackles existed at this time. These were widely used in medieval times, but their use declined when mass production made the manufact ...
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Callao
Callao () is a Peruvian seaside city and Regions of Peru, region on the Pacific Ocean in the Lima metropolitan area. Callao is Peru's chief seaport and home to its main airport, Jorge Chávez International Airport. Callao municipality consists of the whole Callao Region, which is also coterminous with the Province of Callao. Founded in 1537 by the Spaniards, the city has a long naval history as one of the main ports in Latin America and the Pacific, as it was one of vital Spanish towns during the Spanish America, colonial era. Central Callao is about west of the Historic Centre of Lima. History El Callao was founded by Spanish colonists in 1537, just two years after Lima (1535). It soon became the main port for Spanish commerce in the Pacific Ocean, Pacific. The origin of its name is unknown; both Amerindian (particularly Yunga language (Peru), Yunga, or Coastal Peruvian) and Spanish sources are credited, but it is certain that it was known by that name since 1550. Other sou ...
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Astoria, Oregon
Astoria is a port city and the seat of Clatsop County, Oregon, United States. Founded in 1811, Astoria is the oldest city in the state and was the first permanent American settlement west of the Rocky Mountains. The county is the northwest corner of Oregon, and Astoria is located on the south shore of the Columbia River, where the river flows into the Pacific Ocean. The city is named for John Jacob Astor, an investor and entrepreneur from New York City, whose American Fur Company founded Fort Astoria at the site and established a monopoly in the fur trade in the early 19th century. Astoria was incorporated by the Oregon Legislative Assembly on October 20, 1876. The city is served by the deepwater Port of Astoria. Transportation includes the Astoria Regional Airport. U.S. Route 30 and U.S. Route 101 are the main highways, and the Astoria–Megler Bridge connects to neighboring Washington across the river. The population was 10,181 at the 2020 census. History Prehistoric sett ...
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Official Number
Official numbers are ship identifier numbers assigned to merchant ships by their flag state, country of registration. Each country developed its own official numbering system, some on a national and some on a port-by-port basis, and the formats have sometimes changed over time. As an internationally recognized ship identifier, national official numbers have largely been superseded by the IMO number, though flag states still use national systems, which also cover those vessels not subject to the IMO regulations. British official number Beginning in 1855, with the implementation of the Merchant Shipping Act 1854, all British seagoing vessels were assigned an official number to give each ship a unique identity, even after being renamed or changing the port of registry. U.S. official number After the passage of legislation in the United States Congress in 1866, all American ships were required to carve the official number on the main beam; the system was controlled by the Bureau of Sta ...
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United States Shipping Board Merchant Fleet Corporation
The Emergency Fleet Corporation (EFC) was established by the United States Shipping Board, sometimes referred to as the War Shipping Board, on 16 April 1917 pursuant to the Shipping Act (39 Stat. 729) to acquire, maintain, and operate merchant ships to meet national defense, foreign and domestic commerce during World War I. The Shipping Board had been established while the United States was at peace, with the intent to restore the nation's Merchant Marine. That changed with war. In the words of Edward N. Hurley, Chairman of the Board: When the United States declared war against Germany the whole purpose and policy of the Shipping Board and the Fleet Corporation suffered a radical change overnight. From a body established to restore the American Merchant Marine to its old glory, the Shipping Board was transformed into a military agency to bridge the ocean with ships and to maintain the line of communication between America and Europe. Conceived as an instrumentality of peace, the B ...
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Nominal 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 steam ...
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Hamilton, Ohio
Hamilton is a city in and the county seat of Butler County, Ohio, United States. Located north of Cincinnati, Hamilton is the second largest city in the Greater Cincinnati area and the 10th largest city in Ohio. The population was 63,399 at the 2020 census. Hamilton is governed under a council-manager form of government; the current mayor is Patrick Moeller and the city manager is Joshua Smith. Most of the city is served by the Hamilton City School District. Hamilton has three designated National Historic Districts: Dayton Lane, German Village, and Rossville. The industrial city is seeking to revitalize through the arts; it declared itself the "City of Sculpture" in 2000. Its initiative has attracted many sculpture installations to the city, which founded the Pyramid Hill Sculpture Park. History Fort Hamilton Hamilton started as Fort Hamilton (named to honor Alexander Hamilton, first Secretary of the Treasury), constructed in Sept.-Oct. 1791 by General Arthur St. Clair, ...
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Hooven-Owens-Rentschler
The firm of Hooven, Owens, Rentschler, and Company manufactured steam and diesel engines in Hamilton, Ohio. Because the firm was frequently known by its initials, H.O.R., the ''Hooven'' is sometimes incorrectly rendered as ''Hoover'', and the ''Owens'' may be mistaken for ''Owen''. History Origin The firm was the successor to the firm of Owens, Ebert & Dyer (founded in 1845 by Job E. Owens) which went into receivership in 1876. In 1882, George A. Rentschler, J. C. Hooven, Henry C. Sohn, George H. Helvey, and James E. Campbell merged the firm with the iron works of Sohn and Rentschler, and adopted the name Hooven, Owens, Rentschler Co. In 1883 the firm began the manufacture of Corliss steam engines, producing a total of 700 such engines by 1901. 20th century, first part By World War I, the Hooven-Owens-Rentschler Company operated the largest exclusive Corliss Engine plant in the country, employing nearly 800 men. In 1928 the company merged with the Niles Tool Works to ...
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Net Register Tonnage
Net register tonnage (NRT, nrt, n.r.t.) is a ship's cargo volume capacity expressed in "register tons", one of which equals to a volume of . It is calculated by subtracting non-revenue-earning spaces i.e. spaces not available for carrying cargo, for example engine rooms, fuel tanks and crew quarters, from the ship's gross register tonnage.Units and Systems of Measurement Their Origin, Development, and Present Status
. National Institute of Standards and Technology.
Net tonnage is thus used in situations where a vessel's earning capacity is important, rather than its mere size. Net register tonnage is not a measure of the weight of the ship or its cargo, and should not be confused with terms such as