Bridge Navigation & Deck Operations

Navigation Fundamentals Knowledge

This test covers key aspects of navigation, including the fundamentals of orientation, determining directions at sea, working with compasses, courses and bearings, as well as units of length measurement, ship speed, and the principles of their calculation.

Questions 15

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

What type of deviation in a magnetic compass is the latitude compensator intended for?

A To compensate for the variable part of semicircular deviation.

B To compensate for quadrantal deviation.

C To compensate for heeling deviation.

D To compensate for constant deviation.

Question 2

What is a nautical mile?

A The length of one minute of arc along the meridian of a sphere whose volume equals the volume of the Earth's ellipsoid.

B The length of one equatorial minute of arc along the meridian of a sphere whose volume equals the volume of the Earth's ellipsoid.

C The length of one degree of arc along the meridian of a sphere whose volume equals the volume of the Earth's ellipsoid.

Question 3

What is the vertical plane MM′, passing through the Earth's poles and the observer's location (Fig.), called?

A Observer's true meridian plane.

B Horizontal plane.

C Vertical plane.

D Observer's true horizon plane.

Question 4

Magnetic declination is the horizontal angle by which…?

A The plane of the magnetic meridian deviates from the plane of the true meridian at a given point.

B The plane of the compass meridian deviates from the plane of the true meridian at a given point.

C The plane of the true meridian deviates from the plane of the magnetic meridian at a given point.

Question 5

The standard range of light visibility is determined by the optical visibility at a meteorological visibility of?

A 13.5 nautical miles.

B 5 nautical miles.

C 10 nautical miles.

D 20 nautical miles.

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