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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 ...
Theoretically, peak tidal forces at a given location would concur when the Moon reaches the meridian, but a delay usually precedes high tide, depending largely on the shape of the coastline and the sea floor. Therefore, the lunitidal interval varies from place to place – from three hours over deep oceans to eight hours at New York Harbor. [4]
Southeast Farallon Islands (from nautical chart of 1957) A Fata Morgana mirage of the Farallon Islands, as viewed from San Francisco. The Farallon Islands (/ f æ r ə l ɔː n / FA-ra-lon), [2] or Farallones (from Spanish farallón 'pillar, sea cliff'), are a group of islands and sea stacks in the Gulf of the Farallones, off the coast of San Francisco, California, United States.
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Associated Oil Company (Flying A) was an American oil and gas company once headquartered in San Francisco, California [1] and served much of the Pacific West Coast, including Hawaii, as well as the Orient [2] and merged with the Tidewater Oil Company in 1938.
On nautical charts, the top of the chart is always true north, rather than magnetic north, towards which a compass points. Most charts include a compass rose depicting the variation between magnetic and true north. However, the use of the Mercator projection has drawbacks. This projection shows the lines of longitude as parallel.
Tidewater Oil Company (rendered as Tide Water Oil Company from 1887 to 1936) was a major petroleum refining company during the early 20th century. After operating independently from 1887 to 1926, Tidewater was sold to a holding company. Over the decades, it passed through various corporate hands.