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No longer part of the QMOW Comnavsurforinst 3530.4B 28 Jan 08.
11. Days work in Navigation.APPENDIX D
STANDARD DAY’S WORK IN NAVIGATION
OPEN OCEAN NAVIGATION Weather permitting; minimum daily celestial activity will include the following:
Morning Twilight Usually 45 minutes before sunrise, shoot available celestial bodies, to include selected stars, planet(s), the moon, and Polaris. Reduce sightings to LOPs, plot on plotting sheet, and determine ship’s position. Advance celestial fix to 0800 for 0800 Ship’s Position Report. Transfer fix to track chart. Inform CIC/CDC of position.
Early Morning Determine gyro error by azimuth/amplitude of sun or other celestial body. Include any gyro error noted in 0800 and 1200 Ship’s Position Report. Verify Figure Of Merit (FOM) on the WRN-6/GPS and include on position reports.
0800 If required by the CO, submit 0800 Ship’s Position Report to CO, after being reviewed and signed by the Navigator.
8—12 QMOW compute watch time of LAN (Local Apparent Noon).
Morning Shoot sun to determine LOP. Plot on plotting sheet.
Mid-morning Shoot sun to determine LOP. Plot on plotting sheet.
Noon Observe LAN. Recommend observations be started at 10 minutes before computed time of LAN, and for a couple of minutes after. Reduce sighting and determine ship’s latitude. Advance mid-morning sun LOP to LAN LOP on plotting sheet to obtain running fix. Plot running fix on track chart and pass fix information to CIC/CDC. Advance sun LOPs to 1200, for 1200 Ship’s Position Report.
1200 If required by the CO, submit 1200 Ship’s Position Report to CO, after being reviewed and signed by the Navigator.
Afternoon Shoot sun to determine LOP. Plot LOP on plotting sheet. Advance LAN LOP to afternoon LOP on plotting sheet to obtain running fix (minimum three Sun Lines for R-Fix) . Plot running fix on track chart and pass fix information to CIC/CDC.
D- 1
Mid—Afternoon Shoot sun to determine LOP. Plot LOP on plotting sheet. Advance afternoon LOPs to establish an R—Fix. Plot on track chart and pass information to CIC/CDC.
12—16 QMOW determine time of sunset and star time. Compute celestial bodies available, including planets.
Late Afternoon Include any gyro error computed in 1200 Ship’s Position Report.
Evening Twilight Usually 30 minutes after sunset, shoot celestial bodies, to include selected stars, planet(s), moon, and Polaris. Reduce sightings to LOPs, plot on plotting sheet, and determin ship’s position. Advance celestial fix to 2000 for 2000 Ship’s Position Report. Transfer fix to track chart. Inform CIC/CDC of position.
1600—2000 QMOW determine time of sunrise and moonrise/set for CO’s Night Orders. Also compute star time for morning star shoot. Determine celestial bodies available, including planet(s)
2000 If required by the CO, submit 2000 Ship’s Position Report to CO, after being reviewed and signed by the Navigator.
0000—0400 Compute Latitude by Polaris, lines of position of the moon and planet(s), as available, and gyro error by Polaris.
All celestial work must be documented in the ship’s Navigation Workbook withthe Navigator’s signature at the end of each celestial day. When using computer software (i.e., STELLA), documentation of all observations must be maintained in a loose leaf binder.
D-2

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