NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Kevin Coulombe
Date: 2012 Oct 25, 14:00 -0700
STAR FIX
WATCH TIME: 175625 LT 25.10.2012
ZD: +2
WATCH ERROR: 5 s fast
SEXTANT
FPM DRUM SEXTANT / AP MOLLER COMPANY ISSUE / CURRENT BRIDGE EQUIPMENT
4X40 MONOCULAR
RESIDUAL ERRORS +5” AT 20 DEGREES
INDEX ERROR 0.8 OFF THE ARC
BODY: ALPHERATZ
WATCH TIME: 175625 LT 25.10.2012
ZD: +2
WATCH ERROR: 5 s fast
SEXTANT ALTITUDE 38-37.3
BODY: ALTAIR
WATCH TIME: 175838 LT
SEXTANT ALTITUDE 57-58.4
BODY: KOCHAB
WATCH TIME: 180159
SEXTANT ALTITUDE 43-22.9
BODY: MOON
WATCH TIME: 175430
SEXTANT ALTITUDE 29-21.5
UPPER LIMB
HEIGHT OF EYE 30 METERS
BAROMETER 1010
AIR TEMP 18.5C
Assumed Position
L 42-00 N
Lo 034-10 W
Course 097 T
SOA 20.8 kt
Remarks:
Easy motion in moderate following sea.
Broken clouds made this round an interesting hunt. With the sextant preset and sighting at the calculated azimuth the star was either there or the clouds favored you a fleeting glimpse. I think Alpheratz is the least reliable. My moon shot is still unsatisfactory.
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