NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Kevin Coulombe
Date: 2012 Oct 26, 06:53 -0700
LAN
CALCULATED 1123 LT
Observed: 1124 LT
BODY: SUN
Lower Limb
WATCH TIME: 112400 LOCAL TIME
ZD: +2
WATCH ERROR: 4S FAST
SEXTANT ALTITUDE 36-24.0
Index error 0.9’ off the arc
HEIGHT OF EYE 30 METERS
BAROMETER 1015
AIR TEMP 21C
DR
L 40-55 N
Lo 025-53 W
Course 102 T
SOA 21 kt
Remarks:
Easy motion in long, low swell
This observation seems to have come up short by about 7 minutes of arc compared to GPS position.
Sextant notes:
SEXTANT
FPM DRUM SEXTANT / AP MOLLER COMPANY ISSUE / CURRENT BRIDGE EQUIPMENT
4X40 telescope
RESIDUAL ERRORS
-0- AT 10 DEGREES
+5” AT 20 DEGREES
+5” AT 30 DEGREES
+16” AT 40 DEGREES
+15” AT 50 DEGREES
+15” AT 60 DEGREES
+26” AT 70 DEGREES
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