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Seymour Narrows is notable also because the flowing current can be sufficiently turbulent to realize a Reynolds number of about , i.e. one hundred million, which is possibly the largest Reynolds number regularly attained in natural water channels on Earth (the current speed is about 8 m/s, 26 ft/s, the nominal depth about 100 m, 330 ft). [4]
Tide tables, sometimes called tide charts, are used for tidal prediction and show the daily times and levels of high and low tides, usually for a particular location. [1] Tide heights at intermediate times (between high and low water) can be approximated by using the rule of twelfths or more accurately calculated by using a published tidal ...
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Each day, tides force large amounts of seawater through the narrows—760,000,000 m 3 (200 × 10 ^ 9 US gal) of water on a 3 m (9.8 ft) tide. The difference in water levels on either side of the rapids can exceed 2 m (6 ft 7 in) in height. Current speeds can exceed 16 knots (30 km/h; 18 mph), [2] up to 17.68 kn (32.74 km/h; 20.35 mph). [3]
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The CHS is administratively part of Fisheries and Oceans Canada's Oceans and Ecosystems Science Sector. According to mandated obligations of the Oceans Act and the Canada Shipping Act, the CHS is led by the Hydrographer General of Canada who is responsible for gathering, managing, transforming and disseminating bathymetric, hydrographic and nautical data and information into paper and ...
Depending on the scale of the chart, it may show depths of water and heights of land , natural features of the seabed, details of the coastline, navigational hazards, locations of natural and human-made aids to navigation, information on tides and currents, local details of the Earth's magnetic field, and human-made structures such as harbours ...
A U.S. Coast Guard boat steams past in 2021 as workers prepare to deploy a tidal turbine onto a lift arm on a platform just west of the railroad bridge on the Cape Cod Canal in Buzzards Bay.