Expedition Navigation Software 
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- Calibrate9008
- Contributor
Offline - Registered: 6/11/2023
- Posts: 6
Route optimization restricted to certain wind angles
Hi there,
I'm relatively new to the software and recently finished a delivery using it as our primary routing software. One feature I assume it would be capable of but could not locate was running a route while giving it a lower and upper limit on TWA I'd like to experience during the voyage. For example, could I specify to it that over the course I input (or just between two marks) that I want to sail at no greater than 120 TWA and no less than 90 TWA?
Thanks!
- sparky
- Expert
Offline
- From: Cambridge UK
- Registered: 4/27/2018
- Posts: 225
Re: Route optimization restricted to certain wind angles
The output of the routing isn't strictly a list of sailing angles or directions.
There are sections of the routing (dashes on the charts) where you are expected to be tacking or gybing along a line to make the best VMG given e conditions.
- Calibrate9008
- Contributor
Offline
- Registered: 6/11/2023
- Posts: 6
Re: Route optimization restricted to certain wind angles
Thanks for the info Sparky! I'm aware of that but I was wondering if you could give a preferred wind angle / restrict it to within certain TWAs when able. The idea being that along a line between two points where wind is expected to shift significantly there is a route that you could theoretically spend the majority of your time on with a wind angle close to XXX degrees true.
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Thread Starter- barne
- Expert
Offline
- Registered: 9/01/2017
- Posts: 47
Re: Route optimization restricted to certain wind angles
If you just adjust your polars (temporary) with very low boatspeed outside the desired wind angle range, I guess you should be able to get what you're looking for.
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