ES-CY-L2.4

The sextant and altitude corrections: Sun and stars

ES-CY-M2 · Time, the almanac and the corrected altitude · ES-CY-M2-A Time conversions, the Sun and stars from the almanac, meridian passage time, the sextant and altitude corrections (UT1, UT2).

From **altura instrumental** to **altura verdadera**: index error, dip, refraction, parallax and semi-diameter, in order and with signs.

Independent study. xplor is not affiliated with the Dirección General de la Marina Mercante, any Spanish regional government or the Govern de les Illes Balears, and awards no title, certificate or endorsement. Passing these mocks does not replace the official theory exam, and the title also requires the regulated practicals at an authorised nautical school, the radio course and a medical report. AI-drafted content pending subject-matter-expert review.