Jeff Morris wrote:
Yes, its just that simple. You understand perfectly.

Good-o.


There's only
one problem. Here's what Bowditch has to say, from the 2002 edition
(LAN is Local Apparent Noon):

snip

Yup, I'm aware of the difficulty in taking a sight precisely at local noon
due to the sun apparently hanging in the sky, and that some method of
extrapolation from sights either side of zenith is needed.


The exercise of plotting a Noon Sight is one of the first things a
novice learns. Neal's lack of understanding shows he has never
actually done this.

Neal seems to be contending that it's possible to line up a limb of the sun
with the horizon, such that there's a perceptible difference between limb
and horizon being 'in contact' and being separated. While this may well be
possible when everything is nice and stable, I can't help feeling that it
would be rather difficult in a bobbing boat.


--
Wally
www.art-gallery.myby.co.uk
Latest work: The Langlois Bridge (after Van Gogh)