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Skillagalee Island Lighthouse
Ile Aux Galets Light, also known as Skillagalee Island Light, is located on Ile Aux Galets (more commonly known as ''Skillagalee Island''), a gravelly, low-lying island in northeast Lake Michigan, between Beaver Island and the mainland, approximately northwest of Cross Village in Emmet County, Michigan. Along with nearby Grays Reef, Waugoshance, and White Shoal Lights, it warns shipping away from the reefs and shoals of Waugoshance Point, which pose an imminent hazard to navigation. United States Lighthouse Board records initially used both names when referring to the lighthouse, but by 1889 Skillagalee started to be used exclusively. Around 1910, Ile Aux Galets started to be used again, and it is listed by that name on modern light lists published by the United States Coast Guard. History The islet is home to a significant colony of ring-billed gulls. Its name, given by early French explorers, means "Isle of Pebbles." It is said that the English speakers found the French n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octagon
In geometry, an octagon (from the Greek ὀκτάγωνον ''oktágōnon'', "eight angles") is an eight-sided polygon or 8-gon. A '' regular octagon'' has Schläfli symbol and can also be constructed as a quasiregular truncated square, t, which alternates two types of edges. A truncated octagon, t is a hexadecagon, . A 3D analog of the octagon can be the rhombicuboctahedron with the triangular faces on it like the replaced edges, if one considers the octagon to be a truncated square. Properties of the general octagon The sum of all the internal angles of any octagon is 1080°. As with all polygons, the external angles total 360°. If squares are constructed all internally or all externally on the sides of an octagon, then the midpoints of the segments connecting the centers of opposite squares form a quadrilateral that is both equidiagonal and orthodiagonal (that is, whose diagonals are equal in length and at right angles to each other).Dao Thanh Oai (2015), "Equilatera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Lighthouse Board
The United States Lighthouse Board was the second agency of the U.S. federal government, under the Department of Treasury, responsible for the construction and maintenance of all lighthouses and navigation aids in the United States, between 1852 and 1910. The new agency was created following complaints of the shipping industry of the previous administration of lighthouses under the Treasury's Lighthouse Establishment, which had had jurisdiction since 1791, and since 1820, been under the control of Stephen Pleasonton. The quasi-military board first met on April 28, 1851, and with its establishment, the administration of lighthouses and other aids to navigation would take their largest leap toward modernization since the inception of federal government control.Amy K. Marshall "Frequently Close to the Point of Peril: A History of Buoys and Tenders in U.S. Coastal Waters, 1789–1939'", A Master's Thesis In 1910, the Lighthouse Board was disestablished in favor of a more civilian Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse Keeper
A lighthouse keeper or lightkeeper is a person responsible for tending and caring for a lighthouse, particularly the light and lens in the days when oil lamps and clockwork mechanisms were used. Lighthouse keepers were sometimes referred to as "wickies" because of their job trimming the wicks. Duties and functions Historically, lighthouse keepers were needed to trim the wicks, replenish fuel, wind clockworks and perform maintenance tasks such as cleaning lenses and windows. They were also responsible for the fog signal and the weather station, and played a major role in search and rescue at sea. Because most lighthouses are located in remote, isolated or inaccessible areas on islands and coastlines, it was typical for the work of lighthouse keeper to remain within a family, passing from parents to child, all of whom lived in or near the lighthouse itself. "Stag light" was an unofficial term given to some isolated lighthouses in the United States Lighthouse Service. It meant sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaver Island Head Light
The Beaver Head Light is located high on a bluff on the southern tip of Beaver Island. Boats trying to navigate North on Lake Michigan need to carefully work their way between Beaver Island and Gray's Reef. The cylindrical tower was built in 1858, to replace an 1852 tower. The decagonal lantern room offers panoramic vistas of the Lake. The tower is open to the public from 8:00 a.m. though 9:00 p.m. during the summer. In 1866, the attached yellow brick lighthouse keeper's dwelling was constructed. A frame addition was added to the keepers quarters to accommodate assistant keepers. In 1915, the fog signal building was constructed. Other outbuildings on the grounds including an oil house, garage and storage building and outhouse. A radio beacon was placed in 1962, at which time the station was decommissioned and declared surplus. That same year, the original Fourth Order Fresnel lens was removed and placed in the dwelling, where it can still be seen. In 1975, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Whistle
A steam whistle is a device used to produce sound in the form of a whistle using live steam, which creates, projects, and amplifies its sound by acting as a vibrating system (compare to train horn). Operation The whistle consists of the following main parts, as seen on the drawing: the whistle bell (1), the steam orifice or aperture (2), and the valve (9). When the lever (10) is actuated (usually via a pull cord), the valve opens and lets the steam escape through the orifice. The steam will alternately compress and rarefy in the bell, creating the sound. The pitch, or tone, is dependent on the length of the bell; and also how far the operator has opened the valve. Some locomotive engineers invented their own distinctive style of whistling. Uses of steam whistles Steam whistles were often used in factories, and similar places to signal the start or end of a shift, etc. steam-powered railway locomotives, traction engines, and steam ships have traditionally been fitted wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fog Signal
A foghorn or fog signal is a device that uses sound to warn vehicles of navigational hazards such as rocky coastlines, or boats of the presence of other vessels, in foggy conditions. The term is most often used in relation to marine transport. When visual navigation aids such as lighthouses are obscured, foghorns provide an audible warning of rock outcrops, shoals, headlands, or other dangers to shipping. Description All foghorns use a vibrating column of air to create an audible tone, but the method of setting up this vibration differs. Some horns, such as the Daboll trumpet, used vibrating plates or metal reeds, a similar principle to a modern electric car horn. Others used air forced through holes in a rotating cylinder or disk, in the same manner as a siren. Semi-automatic operation of foghorns was achieved by using a clockwork mechanism (or "coder") to sequentially open the valves admitting air to the horns; each horn was given its own timing characteristics to help mari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Huron
Lake Huron ( ) is one of the five Great Lakes of North America. Hydrology, Hydrologically, it comprises the easterly portion of Lake Michigan–Huron, having the same surface elevation as Lake Michigan, to which it is connected by the , Straits of Mackinac. It is shared on the north and east by the Canadian province of Ontario and on the south and west by the U.S. state of Michigan. The name of the lake is derived from early French explorers who named it for the Wyandot people, Huron people inhabiting the region. The Huronian glaciation was named from evidence collected from Lake Huron region. The northern parts of the lake include the North Channel (Ontario), North Channel and Georgian Bay. Saginaw Bay is located in the southwest corner of the lake. The main inlet is the St. Marys River (Michigan–Ontario), St. Marys River, and the main outlet is the St. Clair River. Geography By surface area, Lake Huron is the second-largest of the Great Lakes, with a surface area of — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Sanilac Light
Port Sanilac Light is a United States Coast Guard lighthouse located on Point Sanilac, near Port Sanilac on the eastern side of Michigan's Thumb. It is an automated and active aid to navigation on Lake Huron. History Characterized by shallow water and sandbanks, the stretch of coastline between the Fort Gratiot Light and Pointe aux Barques Light is a hazard to navigation. Even after the establishment of the Sand Beach Harbor of Refuge Light in 1875, of coast line still remained completely unlit.Port Sanilac Lighthouse at Seeing the Light by Terry Pepper. Eighteen years after the first attempts to get congressional funding, the station was established and first lit in 1886. This |
United States Department Of The Treasury
The Department of the Treasury (USDT) is the national treasury and finance department of the federal government of the United States, where it serves as an executive department. The department oversees the Bureau of Engraving and Printing and the U.S. Mint. These two agencies are responsible for printing all paper currency and coins, while the treasury executes its circulation in the domestic fiscal system. The USDT collects all federal taxes through the Internal Revenue Service; manages U.S. government debt instruments; licenses and supervises banks and thrift institutions; and advises the legislative and executive branches on matters of fiscal policy. The department is administered by the secretary of the treasury, who is a member of the Cabinet. The treasurer of the United States has limited statutory duties, but advises the Secretary on various matters such as coinage and currency production. Signatures of both officials appear on all Federal Reserve notes. The depart ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trenton, Michigan
Trenton is a city in Wayne County, Michigan, United States. At the 2010 census, the city population was 18,853. A Shawnee village was built in the area by war chief Blue Jacket after the 1795 Treaty of Greenville. The area later became the site of the Battle of Monguagon between Americans and a British-Indian coalition during the War of 1812. The battle is commemorated with a Michigan State Historical Site marker in present-day Elizabeth Park, which was the first county park in Michigan when it was established in 1919. Portions of the Detroit River International Wildlife Refuge are within the southern portion of Trenton. The area was once part of the now-defunct Monguagon Township. Trenton was incorporated as a village in 1855 and again as a city in 1957. The city is part of the Downriver collection of communities south of Detroit on the west bank of the Detroit River. Trenton is known for its waterfront and growing boating community. Major industries include Stellantis-Chrysl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sidewheeler
A paddle steamer is a steamship or steamboat powered by a steam engine that drives paddle wheels to propel the craft through the water. In antiquity, paddle wheelers followed the development of poles, oars and sails, where the first uses were wheelers driven by animals or humans. In the early 19th century, paddle wheels were the predominant way of propulsion for steam-powered boats. In the late 19th century, paddle propulsion was largely superseded by the screw propeller and other marine propulsion systems that have a higher efficiency, especially in rough or open water. Paddle wheels continue to be used by small, pedal-powered paddle boats and by some ships that operate tourist voyages. The latter are often powered by diesel engines. Paddle wheels The paddle wheel is a large steel framework wheel. The outer edge of the wheel is fitted with numerous, regularly spaced paddle blades (called floats or buckets). The bottom quarter or so of the wheel travels under water. An e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seul Choix Light
The Seul Choix Light is a lighthouse located in the northwest corner of Lake Michigan in Schoolcraft County, Michigan. The station was established in 1892 with a temporary light, and this light started service in 1895, and was fully automated in 1972. It is an active aid to navigation. There is now a museum at the light and both the building and the grounds are open fovisitorsfrom Memorial Day until the middle of October. History This location is the only harbor of refuge along a treacherous stretch of coast. Its French name is "only choice", suggesting that it was used as a refuge by the early French traders in this area. Local references state that the correct pronunciation is "Sis-shwa", assumed to be the common name used by both the French Voyageurs and the Native Americans with whom they traded. In the 1880s, there was increased maritime traffic between the harbors on Lake Michigan's western shore and Green Bay on the one hand, and the Straits of Mackinac on the other. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
