Advanced Maritime Navigation Quiz
A rigorous assessment of high-level seafaring navigation techniques, designed for seasoned mariners and navigation officers.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
What is the primary advantage of using a GPS receiver with dual‑frequency L1/L2 signals over a single‑frequency L1 unit?
- 2
Which method determines latitude by measuring the Sun's altitude at local noon?
- 3
When using the Mercator projection for a course plot, which property remains constant?
- 4
A vessel observes a star at a true altitude of 45°. The calculated intercept is 2.5 NM toward the star. What is the resulting position line?
- 5
In dead reckoning, if a ship steers 030° true at 12 knots for 3 hours, what is the estimated displacement in nautical miles and direction?
- 6
Which correction must be applied to a magnetic compass heading to obtain a true heading?
- 7
When plotting a course on a Mercator chart, what scale factor is used at latitude 45°?
- 8
A lighthouse shows a flashing white light every 10 seconds. What is the correct term for this light pattern?
- 9
During tidal stream prediction, a mariner notes a flood current of 2.5 knots NE at high water. What vector addition is required to combine this with a ship's own speed of 10 knots SSW to find the resultant ground track?
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