Celestial Navigation · The Day's Work — Sequence
A traditional celestial 'day's work' includes, in sequence:
- ATwo sun sights one minute apart
- BOnly a single noon sight
- CContinuous star sights all day
- DMorning stars, a forenoon sun line, LAN for latitude, an afternoon sun line, and evening stars✓ Correct
Explanation
The classic day's work is morning twilight stars (a fix), a forenoon sun line (advanced to noon), latitude by meridian altitude at LAN, an afternoon sun line, and evening twilight stars — giving fixes or running fixes through the day to control the DR.
Authority: Bowditch (Pub. No. 9), The Day's Work
Practice the full Celestial Navigation bank
Free spaced-repetition quizzing across 2550 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Celestial Navigation questions
- Time
The Nautical Almanac tabulates the positions of celestial bodies against which time standard?
- Time
A vessel in west longitude has a zone description of +5. To convert zone time to UT you must:
- Coordinates
How is the GHA of a star obtained from the Nautical Almanac?
- Coordinates
Sidereal Hour Angle (SHA) is best defined as:
- Coordinates
Declination of a celestial body is the celestial equivalent of:
- The Nautical Almanac
Approximately how fast does the GHA of the Sun increase with time?