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Lightvessels
A lightvessel, or lightship, is a ship that acts as a lighthouse. They are used in waters that are too deep or otherwise unsuitable for lighthouse construction. Although some records exist of fire beacons being placed on ships in Roman times, the first modern lightvessel was off the Nore sandbank at the mouth of the River Thames in England, placed there by its inventor Robert Hamblin in 1734. The type has become largely obsolete; lighthouses replaced some stations as the construction techniques for lighthouses advanced, while large, automated buoys replaced others. Construction A crucial element of lightvessel design is the mounting of a light on a sufficiently tall mast. Initially, it consisted of oil lamps that could be run up the mast and lowered for servicing. Later vessels carried fixed lamps which were serviced in place. Fresnel lenses were used as they became available, and many vessels housed them in small versions of the lanterns used in lighthouses. Some lightship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightvessel Fehrmarnbelt
A lightvessel, or lightship, is a ship that acts as a lighthouse. They are used in waters that are too deep or otherwise unsuitable for lighthouse construction. Although some records exist of fire beacons being placed on ships in Roman times, the first modern lightvessel was off the Nore sandbank at the mouth of the River Thames in England, placed there by its inventor Robert Hamblin in 1734. The type has become largely obsolete; lighthouses replaced some stations as the construction techniques for lighthouses advanced, while large, automated buoys replaced others. Construction A crucial element of lightvessel design is the mounting of a light on a sufficiently tall mast. Initially, it consisted of oil lamps that could be run up the mast and lowered for servicing. Later vessels carried fixed lamps which were serviced in place. Fresnel lenses were used as they became available, and many vessels housed them in small versions of the lanterns used in lighthouses. Some lightship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinity House
"Three In One" , formation = , founding_location = Deptford, London, England , status = Royal Charter corporation and registered charity , purpose = Maintenance of lighthouses, buoys and beacons , headquarters = Trinity House, Tower Hill, London, England , region = , membership = , leader_title = Master , leader_name = Anne, Princess Royal , leader_title2 = Deputy Master , leader_name2 = Captain Ian McNaught , revenue = £38,405,000 (2020) , expenses = £46,801,000 (2020) , staff = 312 (2020) , website trinityhouse.co.uk The Corporation of Trinity House of Deptford Strond, also known as Trinity House (and formally as The Master, Wardens and Assistants of the Guild Fraternity or Brotherhood of the most glorious and undivided Trinity and of St Clement in the Parish of Deptford Strond in the County of Kent), is the offi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Carr Light Ship 1988
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''north'' is related to the Old High German ''nord'', both descending from the Proto-Indo-European unit *''ner-'', meaning "left; below" as north is to left when facing the rising sun. Similarly, the other cardinal directions are also related to the sun's position. The Latin word ''borealis'' comes from the Greek '' boreas'' "north wind, north", which, according to Ovid, was personified as the wind-god Boreas, the father of Calais and Zetes. ''Septentrionalis'' is from ''septentriones'', "the seven plow oxen", a name of ''Ursa Major''. The Greek ἀρκτικός (''arktikós'') is named for the same constellation, and is the source of the English word ''Arctic''. Other languages have other derivations. For example, in Lezgian, ''kefer'' can mean b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inchcape
Inchcape or the Bell Rock is a reef about off the east coast of Angus, Scotland, near Dundee and Fife, occupied by the Bell Rock Lighthouse. The name ''Inchcape'' comes from the Scottish Gaelic ''Innis Sgeap'', meaning "Beehive isle", probably comparing the shape of the reef to old-style skep beehives. According to legend, probably folk etymology, the alternative name Bell Rock derives from a 14th-century attempt by the Abbot of Arbroath ("Aberbrothock") to install a warning bell on the reef; the bell was removed by a Dutch pirate who perished a year later on the rocks, a story that is immortalised in "The Inchcape Rock" (1802), a poem by Robert Southey. The main hazard the reef presents to shipping is that only a relatively small proportion of it is above water, but a large section of the surrounding area is extremely shallow and dangerous. The rock was featured in a one-hour episode of the BBC's ''Seven Wonders of the Industrial World'', which told the story of the Bell Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chain
A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A chain may consist of two or more links. Chains can be classified by their design, which can be dictated by their use: * Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped, which make the chain flexible in two dimensions (the fixed third dimension being a chain's length). Small chains serving as jewellery are a mostly decorative analogue of such types. * Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension. They are known as roller chains, though there are also non-roller chains such as block chains. Two distinct chains can be co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rule Of Thumb
In English, the phrase ''rule of thumb'' refers to an approximate method for doing something, based on practical experience rather than theory. This usage of the phrase can be traced back to the 17th century and has been associated with various trades where quantities were measured by comparison to the width or length of a thumb. A modern folk etymology holds that the phrase is derived from the maximum width of a stick allowed for wife-beating under English common law, but no such law ever existed. This belief may have originated in a rumored statement by 18th-century judge Sir Francis Buller that a man may beat his wife with a stick no wider than his thumb. The rumor produced numerous jokes and satirical cartoons at Buller's expense, but there is no record that he made such a statement. English jurist Sir William Blackstone wrote in his ''Commentaries on the Laws of England'' of an "old law" that once allowed "moderate" beatings by husbands, but he did not mention thumbs or any ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightship Finngrundet
The Lightship Finngrundet is a lightvessel built in 1903 and now a museum ship moored in Stockholm, Sweden. History She was the second Finngrundet lightvessel, built in Gävle, Sweden in 1903 and replacing one dating from 1859. She was stationed on the Finngrund banks in the Baltic Sea northeast of Gävle during the ice-free part of the year. She was extensively modified in a refit in 1927 at Öregrunds Ship och Varvs AB, the original paraffin light being replaced with an AGA beacon. The fog bell was augmented with a "nautophone" fog signal and an underwater fog signal. Further modifications carried out in 1940 included the addition of wireless communication along with equipment for her to function as a weather station, and the electrification of her light. Her final refit was in 1957 when the deckhouse and crew space were modified. The optics were built by G.W. Lyth of Stockholm. They are mounted 11.5 metres above sea level and had a range of around . Two flashes were produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huron Lightship Early Career
Huron may refer to: People * Wyandot people (or Wendat), indigenous to North America * Wyandot language, spoken by them * Huron-Wendat Nation, a Huron-Wendat First Nation with a community in Wendake, Quebec * Nottawaseppi Huron Band of Potawatomi, a band of Potawatomi American Indians, based in Calhoun County, Michigan), are also known as the Huron Potawatomi Bodies of water * Lake Huron, one of the North American Great Lakes * Huron Swamp in Springfield Township, Oakland County, Michigan * Huron Falls, one of 24 named waterfalls in Ricketts Glen State Park in Pennsylvania * Huron Lake, in the parish municipality of Lac-aux-Sables, Mékinac Regional County Municipality, Quebec * Huron River (other) * Rivière des Hurons (other) Places Canada * Lac-Huron, Quebec, an unorganized territory in the Rimouski-Neigette Regional County Municipality * Huron-Kinloss, a township in Bruce County, Ontario * Huron East, Ontario, a municipality in Huron County, Ontario * Rural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Stevenson (civil Engineer)
Robert Stevenson, FRSE, FGS, FRAS, FSA Scot, MWS (8 June 1772 – 12 July 1850) was a Scottish civil engineer, and designer and builder of lighthouses. His works include the Bell Rock Lighthouse. Early life Robert Stevenson was born in Glasgow. His father was Alan Stevenson, a partner in a West Indies sugar trading house in the city. Alan died of an epidemic fever on the island of St. Christopher in the West Indies on 26 May 1774, a few days before Robert's second birthday. Robert's uncle died of the same disease around the same time. Since this left Alan's widow, Jean Lillie Stevenson, in much-reduced financial circumstances, Robert was educated, as a young child, at a charity school. Robert's mother intended him to join the ministry, so when he was a bit older she enrolled him in the school of a locally famous Glasgow linguist, a Mr Macintyre. But when Robert was 15, she remarried and the family moved to 1 Blair Street, off the Royal Mile in Edinburgh. Robert's new stepfath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minots Ledge
Minot's Ledge, also known as the Cohasset Rocks, is a reef off the harbor of Cohasset, Massachusetts, 15 miles (24 kilometers) southeast of Boston, Massachusetts. It is the site of the Minot's Ledge Light Minot's Ledge Light, officially Minots Ledge Light, is a lighthouse on Minots Ledge, one mile offshore of the towns of Cohasset and Scituate, Massachusetts, to the southeast of Boston Harbor. It is a part of the Town of Cohassett, in Plymouth C ..., completed in 1860 and considered one of the most significant American engineering achievements of the 19th century. It was constructed by installing pins through tons of granite blocks into the rocks beneath to form the 40-foot base of the tower. The lighthouse is still operating. It is located within the Town of Scituate, in Plymouth County. References Sources * Cohasset, Massachusetts Landforms of Norfolk County, Massachusetts Landforms of Plymouth County, Massachusetts Reefs of the Atlantic Ocean Reefs of the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
