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  2. Chart datum - Wikipedia

    en.wikipedia.org/wiki/Chart_datum

    A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [1] Common chart datums are lowest astronomical tide (LAT) [1] and mean lower low water (MLLW).

  3. Tide table - Wikipedia

    en.wikipedia.org/wiki/Tide_table

    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 ...

  4. Maunalua Bay - Wikipedia

    en.wikipedia.org/wiki/Maunalua_Bay

    Kaiser donated it to the City and County of Honolulu in 1960. [2] Public access to the bay is easily made through the city and county beach park off of Kalanianaʻole Highway across from Hawaii Kai Drive. [3] Despite the tide height, this bay and reef are always accessible to watercraft, standup paddlers, fishers, and kayakers.

  5. Tide - Wikipedia

    en.wikipedia.org/wiki/Tide

    Tide flow information is most commonly seen on nautical charts, presented as a table of flow speeds and bearings at hourly intervals, with separate tables for spring and neap tides. The timing is relative to high water at some harbour where the tidal behaviour is similar in pattern, though it may be far away.

  6. Tidal range - Wikipedia

    en.wikipedia.org/wiki/Tidal_range

    Tidal range is the difference in height between high tide and low tide. Tides are the rise and fall of sea levels caused by gravitational forces exerted by the Moon and Sun, by Earth's rotation and by centrifugal force caused by Earth's progression around the Earth-Moon barycenter. Tidal range depends on time and location.

  7. Pacific Tsunami Warning Center - Wikipedia

    en.wikipedia.org/wiki/Pacific_Tsunami_Warning_Center

    The system covered all countries of the Pacific Ocean with data from 20 seismic stations around the world and 40 tide stations. [2] [1] In the aftermath of the 1964 Alaska earthquake and tsunami, which killed 131 people, it was decided to create another warning system to provide timely warnings about local events for coastal areas of Alaska.

  8. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Maro Reef - Wikipedia

    en.wikipedia.org/wiki/Maro_Reef

    Unlike most atolls, the coral extends out from the center like spokes on a wheel. Located about 850 miles (740 nmi; 1,370 km) northwest of Honolulu, Hawaii, Maro Reef contains about 1 acre (4,000 m 2) of dry land which itself can be submerged depending on the tides. Some scientists believe that it "may be on the verge of drowning" because the ...