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Some spring tides can also pass over the weir at Hanham, making the river tidal as far as Keynsham Lock. [2] Access to the harbour is only possible during the day when the lock keeper will open the gates unless the water level in the river between Netham and Hanham is above or below the level of the harbour. [3]
A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
The former Wharfinger's Building in New Bedford, Massachusetts. Wharfinger (pronounced wor-fin-jer) is an archaic term for a person who is the keeper or owner of a wharf.The wharfinger takes custody of and is responsible for goods delivered to the wharf, typically has an office on the wharf or dock, and is responsible for day-to-day activities including slipways, keeping tide tables and ...
Biden’s 13-minute address marked not only as his departing words after four years in the nation’s highest office, but also served as a coda to a career of public service that spanned more than ...
AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...
Intertidal – The intertidal zone is the region of land which is submerged during high tide and exposed during low tide. Introduced species – Species brought into an area where it does not naturally occur, but is able to survive and reproduce there. Invertebrates – animals without a backbone, such as octopus, shellfish, jellyfish and corals.
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Loggerhead Key is an uninhabited tropical island within the Dry Tortugas group of islands in the Gulf of Mexico. [3] At approximately 49 acres (19.8 hectares) in size, it is the largest island of the Dry Tortugas.