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    Pats QoD 03/07/2025
    5 Posts ยท 4 Followers ยท 1 Photo ยท 5 Likes
    Began 10 days ago by
    Lieutenant Commander
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    Latest Post 9 days ago by
    Commodore
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    Nickthesteam
    Commodore
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Pats QoD 03/07/2025
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    I must get up earlier!
    If it don't fit, use a hammer to make it fit....
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    SouthportPat
    Lieutenant Commander
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Pats QoD 03/07/2025
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    Well done EdW first to get it right - of course it does not work everywhere - the Solent spring to mind but it is a good approximation
    EdW
    Lieutenant
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    ๐Ÿ“ Pats QoD 03/07/2025
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    The Rule of Twelfths applies to tidal changes which are not linear but follow a sine curve.
    It states it changes by 1/12 in the first period, 2/12 in the second period and 3/12 in the third and fourth periods. The fifth period it reduces to 2/12 and in the sixth and final period it reduces again to 1/12.
    This gives you a 1-2-3-3-2-1 giving you a total of 12.
    ๐Ÿค”
    AlessandroSPQR
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    ๐Ÿ‡ฎ๐Ÿ‡น Italy
    ๐Ÿ“ Pats QoD 03/07/2025
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    Hi Pat, is this about the tide?
    SouthportPat
    Lieutenant Commander
    ๐Ÿ‡ฌ๐Ÿ‡ง United Kingdom
    ๐Ÿ“ Pats QoD 03/07/2025
    28 Views ยท 1 Like
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    Hi Shippers

    Not had much time to prepare today been busy and only had the phone to access the internet.

    But here we go:-

    What is the rule of Twelfths all about and explain the theory behind it.


    Good Luck


    Pat



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