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  1. #1
    Join Date
    Jul 2003
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    17

    Default Underlined Depths

    Can anyone please confirm that the reason some chart depths are underlined is because they are not covered by water during the LAT. Thanks Nick

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  2. #2
    Join Date
    Sep 2001
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    18,526

    Default Re: Underlined Depths

    Yes, they are heights above LAT, I think, well I'm pretty sure.

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    If I agreed with you we'd both be wrong.

  3. #3
    Join Date
    Jan 2002
    Posts
    1,297

    Default Re: Underlined Depths

    I think you will find that underlined depths are technically drying heights above Chart Datum which is usually LAT on BA charts but not always .
    Chart Datum and LAT vary on foreign charts also.
    So take care....

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  4. #4
    Join Date
    Jun 2001
    Posts
    19

    Default Re: Underlined Depths

    Stephenh is absolutely right. Underlined heights show drying heights above Chart Datum.
    Rocks that dry are the most dangerous things out there and can catch the unwary.

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  5. #5
    Join Date
    Jul 2003
    Posts
    17

    Default Re: Underlined Depths

    Thanks guys.

    Nick

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  6. #6
    Moose's Avatar
    Moose is offline
    Location : West Sussex, Boat in Chichester
    Join Date
    Nov 2001
    Posts
    2,063

    Default Re: Underlined Depths

    Lobster pots are the most dangerous things "out there" At least you know where the rocks are.

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    El Alce




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