*“Seagull CES marine test online about Introduction to Navigation”* (*Crew Evaluation Test*) will help marine specialists in preparation to exams for getting certificate of confidence.

This test contains 27 questions. Mode *“Practice”* and *“Exam”* have one difference – in *“Exam”* mode you can’t ask the computer to show you the right answer.

Start test

A light is given with the following characteristics: FI W (3+1) 12

*s*25*m*12M. Is this: A white light flashing for 3

*seconds*, then 1*second*up to a total of 12*seconds*and having a range of 25*Nautical Miles*? A red light flashing for 12

*seconds*, having a range of 25*Nautical Miles*? A red light flashing for 3

*seconds*, then occulting once and having a range of 12*Nautical Miles*? A white light flashing for 12

*seconds*and having a range of 12*Nautical Miles*?Next question

How do you find the Nautical Mile scale on the chart?

By measuring one minute of Latitude.

By measuring one minute of Longitude.

By measuring one degree of Longitude.

By measuring the cosine of one degree of Latitude.

Next question

How do you take a running fix?

By measuring the angle between two fixed landmarks and finding the sine of the angle.

By taking bearings from a landmark at time intervals and finding the sine of the angles.

By taking bearings from a landmark at time intervals and measuring the distance covered in the intervals.

By taking the relative bearings from 2 sets of landmarks and plotting the difference.

Next question

How long would 15

*minutes*of longitude be at a latitude of 60° North? 15

*NM*. 30

*NM*. 7,5

*NM*. 60

*NM*.Next question

How long would one degree of latitude be at a latitude of 30° North?

45

*NM*. 30

*NM*. 22,5

*NM*. 60

*NM*.Next question

If there were suddenly an immediate danger for both the vessel and its crew, would you send a

*MAYDAY*on: Channel 06 with Dual Watch?

Channel 06 with 25

*Watts*output? Channel 16 with 1

*Watt*output? Channel 16 with 25 Watts output?

Next question

If you sight the sun’s meridian in the Southern Hemisphere in August, would you then:

Subtract the elevation from 90° and add the declination?

Subtract the elevation from 90° and subtract the declination?

Subtract 90° from the elevation and add the declination?

Subtract 90° from the elevation and subtract the declination?

Next question

If you spot a Racon on the radar and try to visually identify its light, would you look for:

Probably a quick flashing red light?

Probably a white isophase light?

Probably a sector of light?

It doesn’t matter?

Next question

If your timepiece is correct to within 1

*minute*of an hour, what would be your margin of error in estimating your Longitude at Latitude 60° North? Within 7,5

*NM*. Within 15

*NM*. Within 6

*NM*. Within 0,5

*NM*.Next question

In the unlikely event that a distress situation allows you to send only a very short message, after

*MAYDAY*would you first say: Your name and call sign?

Your call sign and position?

The number of persons on board?

The nature of the distress situation?

Next question

On a route from Santander, Spain (43 36 N, 005 38 W) to Brest, France (48 15 N, 004 46 W) would a Great Circle navigation bring you:

To the West of the Rhumb Line navigation?

To the East of the Rhumb Line navigation?

About the same as the Rhumb Line navigation?

Exactly the same as the Rhumb Line navigation?

Next question

The average time between two High Waters is 12

*hours*and 25*minutes*, because this is the time it takes for: The sun to be at the opposite side of the moon.

The moon to be at the opposite side of the earth.

The moon to be at its apogee.

The sun and the moon to be on the same side.

Next question

What can you find from a single aeronautical

*RDF*? Your speed.

A bearing.

A hyperbolic

*LOP*. A range.

Next question

What does a Racon help with?

Measuring the distance.

Measuring the relative speed.

Identifying a vessel.

Identifying a seamark.

Next question

What does the Doppler log measure?

The Speed Made Good.

The speed through the water.

The Speed Over Ground.

The depth of water.

Next question

What is a Gnomonic chart?

A chart, where Great Circle lines can be drawn as a straight line.

A chart giving true bearings.

A chart, where Rhumb Line can be drawn as a straight line.

Another type of Mercator projection.

Next question

What is the easiest way to find the latitude? By measuring the elevation of:

The moon.

The sun.

Venus.

The Pole star.

Next question

What is the Tidal Height?

Twice the tide amplitude.

The range of the tide.

The water above the Lowest Astronomical Tide.

The water above or under the Mean Level (

*ML*).Next question

What made finding the longitude by lunar transit inaccurate?

The ship’s motion.

The lack of an accurate almanac.

The lack of a sextant.

The lack of a reliable chronometer.

Next question

What was the Selective Availability?

A method of finding a more accurate position.

The selection of satellites available over the horizon.

A reduction in the system’s accuracy.

A range measuring device.

Next question

What was the advantage of the Omega system over its predecessors?

It is more accurate.

It has worldwide coverage.

It works in any weather conditions.

It is cheap to install and to use.

Next question

What would be the colour of an

*IALA*starboard hand lateral buoy, as seen when sailing toward land, in Europe? Green.

Red.

Red and green stripes.

Black and yellow stripes.

Next question

Which Beaufort Force is defined as a gale?

Force 7.

Force 8.

Force 9.

Force 10.

Next question

Which instrument uses a plumb-line?

The astrolabe.

The quadrant.

The back-staff.

The cross-staff.

Next question

Who has right of way in a Traffic Separation Scheme?

The inbound vessel.

The outbound vessel.

The vessel coming from the starboard side.

The vessel coming from the port side.

Next question

Who ran the Decca system?

The

*IMO*. The U. S. Department of Defense.

An independent U. S. company.

A British company.

Next question

Would you take the morning sun’s azimuth in order to:

Find a Line of Position (

*LOP*)? Find the sun’s declination?

Find the true North?

Find your latitude?

Show result

* In some questions may be more, than one right answer.

*“CES test”*finished! Your result: