Nav 4 Final Quiz No. 1

How many volumes does Sight Reduction Table Pub No. 229 have?

• 3 Volumes

• 6 Volumes

• 9 Volumes

• 12 Volumes

If Observed Altitude (HO) is greater than the Calculated Altitude (HC), what would be the direction of our intercept?

• Away

• Towards

• East

• West

What is the primary purpose of sight reduction in celestial navigation?

• Locating the position of celestial bodies

• Finding the ship’s position

• Calculating the ship's true course

• Determine wind direction

The computed altitude (Hc) is:

• The altitude measured with a sextant

• The altitude corrected for all possible errors

• The distance of a star from the observer's position

• The altitude tabulated on the sight reduction tables

Which publication provides data on the positions of celestial bodies used for sight reduction?

• Nautical Almanac

• Pub No. 249

• Pub No. 229

• Altitude Correction Tables

In sight reduction, the “intercept” is the:

• Celestial Body's exact altitude

• LHA of the celestial body

• Difference between Ho and Hc

• True Bearing of the Celestial Body

What is the meaning of "away" in the intercept method?

• The body is west of the assumed position

• The observed altitude is less than the computed altitude

• The observed body is below the horizon

• The ship is moving away from the celestial body

When using Volume 1 of Pub No. 249, what should you have in order to get the Calculated Altitude and Azimuth of a star?

• Latitude and LHA Aries

• Latitude and LHA star

• Latitude, Declination, and LHA Star

• Latitude and Declination

When using the sight reduction method, plotting multiple lines of position (LOPs) results in:

• A tide chart

• A radar fix

• A celestial fix

• A magnetic heading

What is the fastest way of solving a sight reduction of a star?

• By using Pub No. 229

• By using Pub No. 249 Vol. 2/3

• By using Pub No. 249 Vol. 1 (Epoch of stars)

• By using the Nautical Almanac only