Above is a picture of my windicator. It is new to me, and we have just used it on our 3 day shake down cruise of our Seaward 25. I am used to using a mechanical windvane, and was surprised had how I have come to depend on it.
Though not an expert on vector forces, I understand apparent wind, and that this measures apparent wind, as well as my angle to the apparent wind.
What confused me was that some of the readings didn't jibe with my expectaions. Sailing wing on wing, I expected to be much closer to 180 than I was. Also, spending time at around 20 apparent, whch at my speed and apparent wind speed, would put me at 33 to the true wind.
So- any tricks to these? Anything that makes them tend to give inaccurate readings?
We are sailing a boat very susceptable to side slip, and are trying to figure the baest sail managemnt for upwind sailing, and at what point pointing high is too high.