Air draft (or air draught ) is the distance from the surface of the water to the highest point on a vessel . This is similar to the deep draft of a vessel which is measured from the surface of the water to the deepest part of the hull below the surface. However, air draft is expressed as a height (positive upward), while deep draft is expressed as a depth (positive downward).
12-422: (Redirected from Shermans Creek ) Sherman Creek may refer to: Sherman Creek (New York) Shermans Creek (Pennsylvania) [REDACTED] Topics referred to by the same term This disambiguation page lists articles about distinct geographical locations with the same name. If an internal link led you here, you may wish to change the link to point directly to
24-528: Is the distance in excess of the air draft which allows a vessel to pass safely under a bridge or obstacle such as power lines , etc. A bridge's "clearance below" is most often noted on charts as measured from the surface of the water to the underside of the bridge at the chart datum Mean High Water (MHW), a less restrictive clearance than Mean Higher High Water (MHHW). In 2014, the United States Coast Guard reported that 1.2% of
36-566: The Harmony of the Seas will fit within the canal's new widened locks , but they are too tall to pass under the bridge, even at low tide (the two first ships are 72 m (236 ft), but do have lowerable funnels, enabling them to pass the 65-metre (213 ft) Great Belt Bridge in Denmark). New vessels are rarely built not clearing 65 m (213 ft), a height which accommodates all but
48-581: The Columbia University crew, and the river is the home course for the university's crew. Since 1952, a large flat rock face, called the "(Big) C Rock" has been painted with Columbia's varsity "C". Also on the river are the Peter Jay Sharp Boathouse and Harlem River Community Rowing, two community rowing facilities. The river is used by crews from New York University , Fordham University , and Manhattan University , though
60-775: The Croton Aqueduct across the river. It is the oldest bridge in New York City. The New York City Department of Transportation advises that while they make every effort to ensure that all bridges are operating, many of them are under repair at any time, and outside contractors are responsible for opening of bridges under repair. Top: closed position bottom: open position Download coordinates as: Notes Further reading 40°50′05.00″N 73°56′02.85″W / 40.8347222°N 73.9341250°W / 40.8347222; -73.9341250 ( Harlem River ) Air draft The vessel's clearance
72-697: The Harlem River Speedway , along the riverbank of the park; the project started construction in 1894 and opened in July 1898. The Speedway later became the Harlem River Drive, and regular motorists were first allowed on the drive in 1919. The Harlem River is spanned by seven swing bridges, four lift bridges, and four arch bridges, and is navigable to any boat with less than 55 feet (17 m) of air draft . However, any boat requiring more than 5 feet (1.5 m) of clearance will require
84-776: The Hudson River and the East River and separating the island of Manhattan from the Bronx on the United States mainland. The northern stretch, also called the Spuyten Duyvil ("spewing devil") Creek , has been significantly altered for navigation purposes. Originally it curved around the north of Marble Hill , but in 1895 the Harlem Ship Canal was dug between Manhattan and Marble Hill, and in 1914
96-568: The Spuyten Duyvil Bridge to swing open. All other movable bridges on the Harlem River provide at least 24 feet (7.3 m) of clearance while closed, so boats and ships requiring between 5 and 24 feet (1.5 and 7.3 m) of clearance need only have one bridge swing open. These bridges replaced fixed bridges or lower bridges in the late 19th century to improve navigation. High Bridge was erected between 1837 and 1848 to carry
108-581: The collisions that it investigated in the recent past were caused by vessels attempting to pass under structures with insufficient clearance resulting in bridge strikes . The Bridge of the Americas in Panama limits which ships can traverse the Panama Canal due to its height at 61.3 m (201 ft) above the water. The world's largest cruise ships, Oasis of the Seas , Allure of the Seas and
120-530: The intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Sherman_Creek&oldid=1192179408 " Category : Place name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Sherman Creek (New York) The Harlem River is an 8-mile (13 km) tidal strait in New York City , New York , flowing between
132-615: The only university with permanent facilities on the river is Columbia. Historically, the west bank of the Harlem River was also an amusement destination. The area between 190th and 192nd Streets was occupied by the Fort George Amusement Park , a trolley park / amusement park , from 1895 to 1914. Its site is now a seating area in Highbridge Park . In the 1890s, the City of New York built a racetrack for horses,
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#1732801495144144-780: The original course was filled in. Harlem River Drive and Harlem River Greenway run along the west bank of the river, and the Metro-North Railroad 's Hudson Line and Major Deegan Expressway on the east. The Harlem River was the traditional rowing course for New York, analogous to the Charles River in Boston and the Schuylkill River in Philadelphia . On the Harlem's banks is the boathouse for
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