1. The GP of a body for a high altitude sight is determined from the declination and the ? Greenwich hour angle.
2. The GP of a body for a high altitude sight is determined from the Greemvich hour angle and the ? Declination.
3. The line of position determined from a sight with an observed altitude (Ho) of 88°45.0 should be ? Plotted as an arc around the GP of the body.
4. The line of position should be plotted as a circle around the GP of the body when the Ho exceeds what minimum value ? 87°
5. The radius of a circle of equal altitude for a body equals the body's ? Zenith distance.
6. The radius of a circle of equal altitude of a body is equal to the ? Coaltitude of the body.
7. When plotting a circle of equal altitude for a high altitude sight, the radius of the circle is determined by the formula ? 90° - Ho.
8. The distance in miles between the circle of equal altitude for the observed altitude (Ho) and the circle of equal altitude for the completed altitude (Hc) is the ? Intercept .
9. The altitude at LAN may be observed by starting several minutes in advance and continuing until a maximum altitude occurs. This procedure should not be used ? On a fast vessel on northerly or southerly headings.
10. A latitude line will be obtained by observing a body ? At lower transit .
11. A star is observed at lower transit. The line of position derived from this sight is ?A latitude line.
12. In general, the most effective period for observing stars and planets occurs during the darker limit of ? Civil twilight.
13. What is the major problem with taking high altitude observations ? It is difficult to establish the point where the sextant is vertical to the horizon.
14. At evening stars, the first stars that should be observed are those with an azimuth in what quadrant ? Eastern.
15. At evening stars, the last stars that should be observed are those with an azimuth in what quadrant ? Western.
16. A body can only be observed at lower transit when ? The body is circumpolar.
17. In order for a star to be used for a sight at lower transit, the star must ? Be circumpolar.
18. At morning stars, the first stars that should be observed are those with an azimuth in which quadrant ? Eastern.
19. At morning stars, the last stars that should be observed are those with an azimuth in which quadrant ? Western.
20. In high latitudes, celestial observations can be made over a horizon covered with pack ice by bringing the sun tangent to the ice and ? Using a dip correction based on the height of eye above the ice.
