Need some Help Nautical Chart Symbols

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  1. #1
    Dedicated TF Poster - Not a Tidal Fish Subscriber
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    Default Nautical Chart Symbols

    What does this magenta X inside a circle represent?

    Click image for larger version. 

Name:	Capture.PNG 
Views:	7 
Size:	15.5 KB 
ID:	256715

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  3. #2
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    And this one that looks like a flag
    Name:  Capture2.PNG
Views: 50
Size:  6.1 KB

  4. #3
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    Your query should be answered here:
    https://nauticalcharts.noaa.gov/publ...1/ChartNo1.pdf

    Bill

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  6. #4
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    It looks like the flag indicates a "local magnetic anomaly" and the X is "isolated danger of depth less than the safety contour".

  7. #5
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    Quote Originally Posted by swampfox View Post
    Your query should be answered here:
    https://nauticalcharts.noaa.gov/publ...1/ChartNo1.pdf

    Bill
    TY

    - - - Updated - - -

    Quote Originally Posted by Cabyn Fever View Post
    It looks like the flag indicates a "local magnetic anomaly" and the X is "isolated danger of depth less than the safety contour".
    Yep thanks

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