Celestial Navigation · Sextant Corrections — Dip
The dip correction applied to a sextant altitude depends on the:
- AAir temperature
- BBody's declination
- CIndex error
- DHeight of eye above the water✓ Correct
Explanation
Dip corrects for the observer's height of eye, which depresses the visible horizon below the true horizontal. It is always subtractive and increases with height of eye.
Authority: The Nautical Almanac, dip table; Bowditch (Pub. No. 9)
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