Expert-Level Sea Route Mastery Quiz

A demanding set of multiple‑choice items probing deep knowledge of navigation techniques, calculations, and safety protocols for professional seafarers.

maritime lawlatitude longitudedead reckoningtidal calculationspilotagecelestial navigationnavigation safetymarine chartsroute planningelectronic chart
Difficulty:HARD

Quiz Details

Questions9
CategoryMaritime
DifficultyHARD
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Quiz Questions

Answer all questions below and test your knowledge.

  1. 1

    In a Mercator sailing triangle, which side corresponds to the latitude difference between departure and destination?

    Question 1
  2. 2

    When applying the Haversine formula for great‑circle distance, what unit must the angular differences be expressed in?

    Question 2
  3. 3

    For a vessel navigating using the Star of Bethlehem (Polaris) at a latitude of 45°N, what is the true altitude of the star above the horizon?

    Question 3
  4. 4

    Which correction is applied to a magnetic compass reading to obtain a magnetic bearing when the deviation table shows -2° and the variation is +12°?

    Question 4
  5. 5

    During dead reckoning, a ship travels 180 nautical miles east on a course of 090° at 12 knots for 15 hours. What is the estimated position change in latitude?

    Question 5
  6. 6

    What is the standard pressure at sea level used in the International Barometric Formula for altitude correction?

    Question 6
  7. 7

    A tide chart shows a semi‑diurnal pattern with a mean range of 2.4 m. If high tide occurs at 04:15 UTC, when is the next high tide expected?

    Question 7
  8. 8

    When using an Electronic Chart Display and Information System (ECDIS), which layer must be activated to display depth contours for safe grounding avoidance?

    Question 8
  9. 9

    In pilotage, what is the term for the angular measurement taken between two fixed points on shore to establish a line of position?

    Question 9

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