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  2. 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 ...

  3. 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.

  4. 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).

  5. Lunitidal interval - Wikipedia

    en.wikipedia.org/wiki/Lunitidal_interval

    The lunitidal interval [1] measures the time lag from lunar culmination to the next high tide at a given location. It is also called the high water interval (HWI). [2] [3] Sometimes a term is not used for the time lag, but instead the terms age or establishment of the tide are used for the entry that is in tide tables.

  6. Greenslade - Wikipedia

    en.wikipedia.org/wiki/Greenslade

    Greenslade's third album, Spyglass Guest was their most commercially successful, reaching number 34 in the UK Albums Chart. Reeves left shortly after the album was finished so that he could focus on his career as a producer, [ 5 ] and was replaced on the U.S. tour and subsequent fourth album Time And Tide by Martin Briley , who also contributed ...

  7. Rule of twelfths - Wikipedia

    en.wikipedia.org/wiki/Rule_of_twelfths

    In many parts of the world the tides approximate to a semi-diurnal sine curve, that is there are two high- and two low- tides per day. As an estimate then each period equates to 1 hour, with the tide rising by 1, 2, 3, 3, 2, finally 1 twelfths of its total range in each hour, from low tide to high tide in about 6 hours, then the tide is ...

  8. Tide-Predicting Machine No. 2 - Wikipedia

    en.wikipedia.org/wiki/Tide-Predicting_Machine_No._2

    Tide-Predicting Machine No. 2, also known as Old Brass Brains, [1] was a special-purpose mechanical computer that uses gears, pulleys, chains, and other mechanical components to compute the height and time of high and low tides for specific locations. The machine can perform tide calculations much faster than a person could do with pencil and ...

  9. Tidewater (marine services) - Wikipedia

    en.wikipedia.org/wiki/Tidewater_(marine_services)

    The company was founded in 1956 by a group of investors led by the Laborde family. [1] [non-primary source needed] Tidewater created the "work boat" industry with its 1956 launch of the Ebb Tide, the world's first vessel tailor-made to support the offshore oil and gas industry. Today, Tidewater is the leading and most experienced provider of ...