Hover or tap underlined Spanish terms to see their translation and exam tip.
¿Es posible corregir los errores en la lectura del sextante?Is it possible to determine and correct the index error in a sextant reading?
Show the answer
Correct answer: d) Yes, by sighting the Sun, the stars, the planets or the sea horizon.
Why it is correct
A sextant’s index error (IE) can be determined (and either adjusted out or applied as index correction IC = −IE) with the index arm near 0° 00′ by bringing the direct and reflected images into coincidence using the sea horizon, a star, a planet or the limbs of the Sun.
Why the others are not
- a) Index error can and should always be checked before every sight.
- b) In addition to the Sun, it can be measured using stars, planets or the sea horizon.
- c) At night or when the horizon is hazy, stars, planets or the Sun are used.
How to work it out in the exam
- Determining sextant index error: using the sea horizon, stars, planets or the Sun.
Where this question comes from
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de julio · CY Test 2 · question 7 Official paper · Official answer key
- Ministerio de Transportes (Madrid) · 2021 · Convocatoria de julio · CY Test 3 · question 9 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.