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    Re: Chart-plotters, dead reckoning, pilotage, etc.
    From: Steve Dunlop
    Date: 2018 Sep 25, 08:51 -0700

    <<It all depends on how much you want to spend on your chart plotter.  ECDIS grade chart plotters will maintain a DR plot based on heading input (compass) and log (typically sonar) if GNSS inputs are lost (the alarm alerting you of this makes an racket). >>

    Right now I'm using my phone, but I'm looking at OpenCPN and standard products from B&G and Raymarine.  I don't know what they are actually capable of. 

       
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