A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
The American Association of Variable Star Observers (AAVSO) is an international nonprofit organization. Founded in 1911, the organization focuses on coordinating, analyzing, publishing, and archiving variable star observations made largely by amateur astronomers. The AAVSO creates records that establish light curves depicting the variation in brightness of a star over time. The AAVSO makes these records available to professional astronomers, researchers, and educators.
A pea coat is an outer coat, generally of a navy-coloured heavy wool, originally worn by sailors of European and later American navies. Pea coats are characterized by short length, broad lapels, double-breasted fronts, often large wooden, metal or plastic buttons, three or four in two rows, and vertical or slash pockets. References to the pea jacket appear in American newspapers at least as early as the 1720s, and modern renditions still maintain the original design and composition.
Anderson Mesa Station is an astronomical observatory established in 1959 as a dark-sky observing site for Lowell Observatory. It is located at Anderson Mesa in Coconino County, Arizona, about 12 miles (19 km) southeast of Lowell's main campus on Mars Hill in Flagstaff, Arizona.
Destructor was a 19th-century Spanish warship. She was a fast ocean-going torpedo gunboat and the main precursor of the destroyer type of vessel. Destructor was the first warship classified as a "destroyer" at the time of her commissioning. Her designer was a Spanish Navy officer, Fernando Villaamil, commissioned by the Minister of the Navy, Vice-Admiral Manuel Pezuela.
Journal Citation Reports (JCR) is an annual publication by Clarivate. It has been integrated with the Web of Science and is accessed from the Web of Science Core Collection. It provides information about academic journals in the natural and social sciences, including impact factors. The JCR was originally published as a part of the Science Citation Index. Currently, the JCR, as a distinct service, is based on citations compiled from the Science Citation Index Expanded and the Social Sciences Citation Index. As of the 2023 edition, journals from the Arts and Humanities Citation Index and the Emerging Sources Citation Index will also be included.
The Society for Nautical Research is a British society that conducts research and sponsors projects related to maritime history worldwide.
Charles Christopher Lloyd was a British naval historian, who served as Professor of History at the Royal Naval College, Greenwich, 1962–1966.
Adler von Lübeck, also called Der Große Adler or Lübscher Adler, was a 16th-century warship of the Hanseatic city of Lübeck, Germany. Adler von Lübeck was one of the largest ships in the world at her time, being 78.30 m long overall and displacing 2–3,000 tons.
Dimethazan (Elidin) is a stimulant drug of the xanthine class related to caffeine and theophylline. It also has tranquilizing and respiratory-stimulating effects and has been sold as an antidepressant.
Lieutenant Colonel William Gordon Perrin, OBE (1874–1931) was an RAF and Navy officer, and the Admiralty librarian from 1908 to 1931. He is most well known for his works on flags; particularly British Flags: Their Early History, and Their Development at Sea which has been described as the standard by which all other flag books are compared and Nelson's Signals in which he established that the flags which had been accepted as denoting Nelson's historic signal at Trafalgar were incorrect.
Standard weight in fish is the typical or expected weight at a given total length for a specific species of fish. Most standard weight equations are for freshwater fish species.
Innes McCartney is a British nautical archaeologist and historian. He is a Visiting Fellow at Bournemouth University in the UK.
The Royal Naval War College was a training establishment for senior officers of the Royal Navy that existed from 1900 to 1914. It was based originally at Greenwich, then Plymouth, then Portsmouth, and then Greenwich again. Branch colleges were also based at Chatham and Plymouth prior to the First World War.
Roger Charles Anderson was an independently-wealthy English maritime historian, collector, and a leading figure in the early years of the Society for Nautical Research and of the Navy Records Society. Four times editor of the Mariner's Mirror, Anderson was also a founder trustee, and later chairman of the board of trustees, of the National Maritime Museum, Greenwich. He was a Fellow of the Royal Historical Society, a Fellow of the Society of Antiquaries of London, and held the higher Doctor of Letters degree. In 2005, the Swedish naval historian Jan Glete characterised Anderson as "one of the most important naval historians of the twentieth century. He mainly wrote about early modern warship technology and used his linguistic skills to write books and essays based on the literature from several countries."
The15th Destroyer Flotilla, or Fifteenth Destroyer Flotilla, was a naval formation of the British Royal Navy from August 1916 to March 1919 and again from September 1939 to May 1945.
Patricia Holmgren is an American botanist. Holmgren's main botanical interests are the flora of the U.S. intermountain west and the genera Tiarella and Thlaspi. Holmgren was the director of the herbarium at the New York Botanical Garden from 1981–2000, and editor of Index Herbariorum from 1974–2008.
Roger Charles Carolin is a botanist, pteridologist and formerly an associate professor at Sydney University. He was appointed as a lecturer in botany at the University of Sydney in 1955 earned a Ph.D from Sydney University in 1962 with a thesis on the floral morphology of the campanales, and retired as an associate professor in 1989.
Grahame Edgar Farr was a maritime historian, specialising in the history of ships and shipping in the south-west of England from the eighteenth century onwards. He also wrote about the history of the lifeboat.
