Right on Jeff,

You sprung the time trap on Longitude that I'd set up for Neal. It
didn't take you anytime at all. I raise my glass to you! You even picked
up the error of Mr Davis. They recommend using the plastic model for
practise only.

I'll only mention that a ten mile error is over the horizon and out of
sight. This in real voyaging could make DED course selection rather
iffy. I guess tied to a mooring overcomes that problem.

Good Job Jeff!

Ole Thom