Bridge Navigation & Deck Operations

Celestial Navigation – Deck Officer Assessment

Comprehensive celestial navigation test based on practical officer-level tasks. Includes latitude by meridian altitude, GHA/LHA/SHA calculations, intercept method, azimuth & position lines, equation of time, and sextant errors. Recommended for 2/O, 3/O and exam preparation.

Questions 18

Time Limit 9 min

Language English

Sample Questions

Here are some example questions from this quiz. Download the GYRO app to take the full test.

Question 1

The moon rotates around its axis with a period of:

A 28,0 days.

B Star month 27,3 days, moon month 29,5 days.

C 30,0 days.

D 26,5 days.

Question 2

The Sun when on the observer’s meridian, declination is 16° 25′.4 N, Zenith distance is 6° 57.4′, bearing to North. Calculate the observer’s latitude.

A 12° 15′ N.

B 9° 28′ N.

C 10° 45′ N.

D 8° 30′ N.

Question 3

If the Greenwich Hour Angle (GHA) of the sun is 315° and the Local Hour Angle (LHA) is 36°, what is the longitude?

A 81° E.

B 75° E.

C 90° E.

D 70° E.

Question 4

If a ship is in 150° E longitude and the equation of time is +6 minutes, what is the GMT of noon at the ship?

A 0,1 h 0,4 m.

B 0,2 h 0,6 m.

C 0,3 h 0,5 m.

D 0,0 h 0,8 m.

Question 5

A position line drawn in the direction 150°/330° could correspond to an azimuth of the observed body of:

A 70°/250°.

B 60°/240°.

C 65°/245°.

D 75°/255°.

Celestial Navigation – Deck Officer Assessment

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