NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Silicon Sea Nav Problems
From: Dan Hogan
Date: 1996 Sep 05, 22:14 EDT
From: Dan Hogan
Date: 1996 Sep 05, 22:14 EDT
ALL,
After a short discussion amoung the working group, I am wondering if the
list pareticipents are aware that usin a Nav Log will ease working the
problems. The idea is that entries are made as if on a boat and any mistakes
are visible on one page, The log layout will depend on what DR and celestial
method you are using. Most will require at least the data in the following
sample. An 8 1/2 x 11 spiral binder is ideal/notebook.
==============================================
|Time|CC |Var |Dev |Tot | TC |Log |Dist|Speed|
| | | | |Err | | | | |
==============================================
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
|____|____|____|____|____|____|____|____|_____|
A one page per problem log can be developed by laying out SR in a columner
format. Allowing three sights per page below the DR. That is for all but the
formal format for 229.
But 229 can be shortend once one is familer with it by combining the
tabulated corrections. Also just use Left page for DR and Right page for SR.
Column SR 229
-------------
GMT Date
Body
IC
Dip
Sum
Hs
Alt. Corr.
Add'l
H.P. ( )
Corr'n Ha
Ho
DR Lat
DR Lon
GMT Time
Tab GHA
GHA Incr.
SHA/v
GHA
+ 360(?)
Assumd Lon(-W, +E)
LHA
Tab dec (d)
d corr'n
True Dec
Assumd Lat (N or S)
Dec Inc ((+/-) d)
Hc (tab alt)
tens (DS Diff)
units (DS corr)
Tot Corr'n
Hc
Ho
a (intercept)
Z
Zn (Td)
Dan Hogan
West Covina, CA
dhhogan@XXX.XXX
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