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-----Original Message-----
From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]On
Behalf Of Stacy Hanna

Jim, I'm not entirely sure what you are asking. I'm not sure if you are
questioning why LAN should be observed or why the Navy is doing celestial at
all. (snipped)

Stacy: thank you for your very illuminating message on the current day's
work at sea instruction in the US Navy, however it does not answer my
poorly-framed question.  I was just pointing out the current Dutton's
emphasis on LAN observations, within the context of all the discussion we
have been seeing about the risk of error in deriving certain information
from a noon sun sight.  This thread is splitting into two themes: (1)
current CN practice at sea, and (2) discussion about the fine points of noon
sights, particularly error due to difficulty in determining the precise
point of LAN.  Recall that I am still finishing up my CN course, not an
experienced celestial navigator.

I made that quote because of the phrase, "it (noon sun sight) can usually be
relied upon to yield the most dependable celestial LOP of the day".  Given
the concerns expressed about errors in determining LAN, I am still not sure
that I understand why Dutton's uses the term, "dependable"?

-----Original Message-----
From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]
On Behalf Of Jim Thompson

From Dutton's, 15th edition (new this month): "...the LAN observation is
extremely important in navigation, chiefly because it can usually be relied
upon to yield the most dependable celestial LOP of the day.  The Sun should
be observed at LAN as a matter of routine aboard every vessel.".  Why do
they make that statement in 2004? Especially naval authors writing for
beginners in the modern digital navy.

Jim Thompson
jim2@jimthompson.net
www.jimthompson.net
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