Challenging Maritime Navigation Quiz
A rigorous test of professional navigation expertise for seasoned seafarers.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
Which of the following formulas correctly converts a magnetic bearing to true bearing when the magnetic variation is known?
- 2
When using the Mercator sailing method, what is the relationship between the difference in latitude and the difference in longitude on a Mercator chart?
- 3
What is the primary purpose of a DR (dead‑reckoning) plot on a ship’s bridge?
- 4
In the context of electronic chart display and information system (ECDIS), which class of chart is required for compulsory carriage on international voyages?
- 5
During a celestial fix using the noon sight, which element is NOT required?
- 6
Which tidal constituent has the greatest influence on diurnal tides in the Gulf of Mexico?
- 7
When plotting a rhumb line between two points of different latitudes, which navigation principle ensures the course remains constant?
- 8
A vessel observes a bearing of 045° to a lighthouse and later, after sailing 15 NM on a true heading of 090°, the bearing to the same lighthouse is 030°. What is the approximate distance from the lighthouse to the vessel's current position?
- 9
What is the standard chart datum used for sounding depths on most Admiralty charts in the United Kingdom?
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