It seems to me that if you are sailing with wind vane
self-steering that you need something to tell you when the wind
has shifted significantly and that your yacht is now going in the wrong direction, and it can make an alarm
I believe that such a standalone device could be using very little electricity and could be sold quite cheaply.
Does anybody use such a device? Can I buy such a device? If not could I make such a device?
I can get one for a supertanker, but I do not drive a supertanker, and do not have pockets to match. Obviously, if nobody makes one, nobody uses one, and nobody sees the necessity for one, then I am barking up the wrong tree?