Practical Navigation Course
← Unit 4 · Celestial Navigation

Unit 4 test

Fifteen questions across the unit's chapters. Answers and rationales are revealed on submission; 70% to pass.

Unit 4 test

0 of 15 answered

  1. 1.With declination 12°N and latitude 40°N, the amplitude is approximately:

  2. 2.Zone time is 0800 at ZD +5. UT is:

  3. 3.The true azimuth of the sun is 093.0° and the gyro bearing is 095.5°. Gyro error is:

  4. 4.For a star, GHA is obtained from:

  5. 5.Amplitude of the sun is observed when:

  6. 6.A four-second error in timing a sight produces a longitude error of about:

  7. 7.For a sun lower-limb observation, semi-diameter is:

  8. 8.Star SHA and declination are tabulated:

  9. 9.Three star LOPs form a small but offset triangle. The most likely cause is:

  10. 10.The v correction in the Nautical Almanac accounts for:

  11. 11.A sextant reads 2.0′ on the arc when set to the horizon. The index correction is:

  12. 12.The declination of a body corresponds to which terrestrial coordinate?

  13. 13.GHA of the sun is 040°, observer longitude 070°W. LHA is:

  14. 14.Dip correction is:

  15. 15.Ho is 34°12.0′ and Hc is 34°06.0′. The intercept is: