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    3/15/2021 6:47 am  #1

    SiljeWith
    Expert

    Offline

    Registered: 11/17/2017
    Posts: 27

    Current effect on forecast GWD for TWD when calcuating optimal route

    hei there
    I tried to search for this in the forum, but couldn't find.
    As I see it,
    - the wind forecasts deliver GROUND WIND (GWS, GWD).
    - This wind forecast is input into the optimal route calculations.

    When adding current/tide into the optimal route calculations, does the algorithms then add the effect the current/tide has on the TWD/TWS? so that the for example the TWA given in the optimal route results, is based on GW+CURRENT? Or is the current only included as an effect on SOG and COURSE?

    was this clear??

    best regards
    silje
     

     

    3/15/2021 11:08 am  #2

    Nick
    Moderator

    Offline

    Registered: 9/16/2015
    Posts: 3,285

    Re: Current effect on forecast GWD for TWD when calcuating optimal route

    Hello,

    Yes, Exp converts the forecast wind into the sailing wind.
     

     

     

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