Mark-1
Well-known member
Fair enough.
If you can average 60nm error with something like that, that would be good going. In sea state, more error. But just to play for fun, it's fine.
Guess I am a romantic in this respect. I find my sextant to be a "beautiful instrument", to be loved and cared for. It's accurate to around 0.2nm. If I can hold it still enough! In reality anything better than 3nm is very good on a small boat with moderate seastate.
For Heath Robinson Navigation, I find this guy's trips fascinating:
http://www.furledsails.com/article.php3?article=774
There's a guy called Tristan Gooley who does similar on land:
https://www.naturalnavigator.com/books-and-library/