Navigation Teacher Interview Preparation Guide
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Navigation Teacher related Frequently Asked Questions by expert members with professional career as Navigation Teacher. These list of interview questions and answers will help you strengthen your technical skills, prepare for the new job interview and quickly revise your concepts

70 Navigation Teacher Questions and Answers:

1 :: What is astrolabe?

Astrolabe is an instrument used to determine the altitude of celestial objects before the introduction of the sextant. The first recorded use by Greek astronomers in around 200 B.C.

2 :: What is local Hour Angle (LHA)?

The Local Hour Angle (LHA) is the angular distance to the Meridian of the celestial body's Geographical Position, as measured Westwards from the observer's local Meridian.

The Local Hour Angle is calculated from the Greewich Hour Angle (GHA) of the celestial body and the Longitude of your Estimated Position in the following way:-

☛ LHA = GHA - Longitude, if the Longitude is West
☛ LHA = GHA + Longitude, if the Longitude is East

3 :: What is CC or Compass Course?

CC or Compass Course is the course to steer which has been corrected for current, variation, and deviation.

4 :: What is copernicus?

Copernicus is 1473-1543, Polish astronomer credited with disproving the Ptolemaic System.

5 :: What is doldrums?

Doldrums is the Inter-tropical Convergence Zone (or ITCZ) a belt of very still air between 5 degrees north and 5 degrees south of the equator.

6 :: What is horizon?

Horizon is the apparent line, for an observer where the earth’s surface and the sky meet. Also a circle formed on the celestial sphere by a plane tangent to a point on the Earth's surface.

7 :: What is north Magnetic Pole?

North Magnetic Pole is the northerly point toward which a compass' needle always points, the north of the earth’s magnetic field as opposed to the geographic north pole

8 :: What is standard port?

Standard port is a port for which the Tide Tables give full details and from which Secondary Port details con be extrapolated. Strait is a narrow channel of water connecting two larger bodies of water.

9 :: What is actual depth?

Actual depth is the true depth of water as opposed to a predicted depth. Tidal height from table added to the charted depth.

10 :: What is artificial Horizon?

If sight of the natural Horizon is not available, an Artificial Horizon is some means by which an observer can refer to a horizontal plane through his position. With a marine sextant, it is common to use a mirror in the horizontal plane. The angle between the celestial body as seen in the sky and as reflected in the mirror is measured with the sextant. Halving this angle gives the Altitude of the celestial body above the Horizon.