Expedition Expedition Navigation Software

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11/22/2019 6:14 pm  #1


Optimal route only shows rhumb line

No matter what I do, optimal routing solution always follows route marks exactly, even if it means sailing apparent wind angles below 10. I have checked boat polars which look accurate.

I have been going through the North U 101 Webinar,  so don't know if I changed something while doing that?

I haven't been able to find answer by searching forum.

Thanks

 

11/22/2019 6:29 pm  #2


Re: Optimal route only shows rhumb line

Have you selected 'Optimise along great circle' ?

 

11/22/2019 6:41 pm  #3


Re: Optimal route only shows rhumb line

Yes,  that was selected. Back to normal now that it is off- thanks.

Why does that happen with great circle route selected?

     Thread Starter
 

11/22/2019 7:36 pm  #4


Re: Optimal route only shows rhumb line

It is there in case you want to sail along the great circle. A delivery motor-sailing would be one scenario.

 

11/23/2019 7:15 pm  #5


Re: Optimal route only shows rhumb line

Start with the really obvious - once you know - have you selected passing sides for your marks, or are they all set to "Sail to mark", which is the default.

 

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