vanna a écrit :While I am on the computer everything works perfectly,the problems start while I am not at home or sleeping,than I have to programme the boat.
It can not be programmed following TWA,bot only following the course,which means in strait line.The direction of the wind is changing and and my TWA too,which means that to stay on same TWA,I should programme a lot of points in strait line with different courses,until I decide to programme luff of the boat.
After luff I should continue in same manner.
Damir, the "regulator", if switched on, will maintain the same TWA cell after cell and even after a weather update, there is no need to program any point. Also if you do program some schedule points, meeting the first one will automatically turn the auto heading (regulator) off.
Personally, I tend to not use the auto heading because with 9 scheduler points I can certainlycover 12 hours of sailing. Basically one point at each cell crossing where the wind is different and may require a course or sail change. Unlike at LS, the scheduler way points don't drift in a 12 hour period (from weather update to weather update). They will drift after that because the winds probably won't match the forecast.
The weather updates can be thought of as happening at 07:5x and 19:5x where x is the iteration minute. So a 07:5x or 19:5x I place a schedule points and set a course based on the 12h wind. If I do that 1 hour before the weather update, the boat will sail correctly after 08:00 or 20:00. It will look funny between 07:5x amd 08:00 because the display will show the old wind and the boat will already be heading as set for the new wind. Whatever you do, don't touch anything between those few minutes (it's best not to even look

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(by the way I assumed that when you said "luff" you meant tack. Did you mean something else? We can't luff competitors here as we can in a real race, it would be fun if we could

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Cheers,
John