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    Re: Height Correction
    From: Robert Swartz
    Date: 2020 May 6, 22:43 -0700

    Found the following table in the back of the Air Almanac post which may be applicable:
    "Corrections To Be Applied To Marine Sextant Altitudes" (dip of the horizon)

    It seems that my 1-2 feet above sea level when using the natural horizon for sextant calibration is within the accuracy parameters of most bubble sextants.(1 min. of angle)

    Robert Swartz

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