So what you are saying Dave is that it will work when my boat is upside down?
Don't really know now I've read it again
Maybe that bottle of red has something to do with it now! But let me know if you try it
Dont know why there is all this problem with compasses - we run down the leading lights in and out every trip and they are bob on, and our stock courses we use for nav excercises all work fine with the compass. Being an old(ish) git, before even Decca was available for little boats we ran to our fishing marks on a compass and watch in all sorts of visibility. Mind you it was worth it then cos there was something left in the sea to catch