@idefix37 said in How to use a route planner:

@danies
Hello,
Sorry, I don't share your statement on the problem you are reporting.
In the route planner, Windy displays only the true wind, not the apparent wind.
Try using the Flight option with a speed of 200 kt. You will see that it is not the apparent wind. Just the wind predicted by the weather model at the boat/plane position based on the time.
And the waves are only those predicted by the wave model based on the true wind and swell.
The difference between your screenshots (speed on and speed off) is only because when the speed is off, the wind and waves are those predicted at the time of start. When you set the speed, you get the wind and waves at the different time steps of the planned trip.
The route planner is reliable as long as the weather forecast is reliable and the boat speed is accurate. This last point in the case of a sailboat is probably the one that introduces maximum error because a sailboat rarely has a constant speed like a motorboat along a whole trip.

Ok thanks

Hi i think there is a problem in the route planner.

if i create a route , the prediction change if i activate a velocity of boat or if is deselected.

this is wright if is considered the AWS APPARENT WIND SPEED or the TWS TRUE WIND SPEED but i think this working on the contrary. if my boat direction is against the wind, the wind speed must increase if the wind is behind and must decrease.

Furthermore, the height of the wave must not be influenced by the speed of the boat or the apparent wind because it is determined only by the true wind.

I don't know how to point this out to the programmers but currently the route forecast is not reliable.

regards Daniele Sciannimanico Bari Italy