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- Master & Chief Mate (Oceans or Near Coastal (Offshore Supply Vessel)) »
- Q204 - Navigation General: Oceans
270. In working out a local apparent noon sight for your latitude, you subtract the Ho from 90°. The 90° represents the angular distance from __________.
The 90 represents the fixed angular distance between the horizon and zenith; subtracting the observed altitude (Ho) from 90 converts the altitude to a zenith distance.
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