Celestial Navigation · The Day's Work
Which sequence best describes the classic celestial 'day's work' at sea?
- AMorning twilight stars, morning sun line, LAN latitude, afternoon sun line, evening twilight stars✓ Correct
- BNoon sight only, repeated hourly
- CContinuous Polaris observations through the night
- DA single three-star fix at midnight
Explanation
The traditional day's work: a morning star fix at twilight, a forenoon sun line, latitude by meridian altitude at LAN, an afternoon sun line (often a running fix with the noon line), and an evening star fix — bracketing the day with several independent positions.
Authority: Bowditch (Pub. No. 9), the day's work in celestial navigation
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