IG MARITIMEMade by Seafarers for Seafarers

All international training tests on IG MARITIME are free for every seafarer. Register once to save your progress and prepare for your next voyage without limits!

CD0049. Radar Observation and plotting

Search this section

Choose a question set and start learning or take an exam.

About this collection

The Seagull CBT bank is organised into modules covering safety, shipboard operations, maintenance and other topics. Original module names and codes are retained to help you find the topic you need.

“Seagull CBT — CD0049. Radar Observation and plotting” contains 53 questions across 1 collection.

Learning

Learning mode has no timer. After answering, you see feedback and the correct options. You can return to a question and repeat a topic.

Exam

A practice exam lasts up to 60 minutes and includes up to 50 questions from the selected collection. Correct answers and results appear after completion.

Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

The reflection of radar pulses is similar to that of?

One correct answer

  • Sound waves.
  • Ice.
  • Snow.
  • Light waves.✓ Correct answer
How can the horizontal extent of a “Blind Sector” be accurately determined?

One correct answer

  • By visually looking for on-board obstructions.
  • By turning the ship through 360 degrees and determining when a strong echo disappears and reappears on the radar screen.✓ Correct answer
  • By determining the direction of indirect echoes.
  • By looking at the sectors on the radar display with no sea clutter.
What is the minimum display diameter required on ships bigger than 1600 tons but less than 10 000 tons?

One correct answer

  • 250 mm✓ Correct answer
  • 340 mm
  • 360 mm
  • 380 mm
What is the effect of gyro error?

One correct answer

  • All bearings will be wrong.✓ Correct answer
  • All ranges will be wrong.
  • Bearings and ranges will be wrong.
  • None of the three alternatives.
What is the meaning of “radar Bearing Discrimination”?

One correct answer

  • The radar ability to display as separate spots on the screen, close targets on the same range.✓ Correct answer
  • The radar ability to display as separate spots on the screen, close targets on the same bearing.
  • The radar ability to pick up large targets.
  • The radar ability to pick up small targets.

Before you start

Do I need to register to start?

Guest access lasts 23 minutes. Free registration lets you continue without limits, save progress and review mistakes in your account.

What language are the questions in?

Questions and answer options retain the language of the original bank. You can change the interface language separately.

Can I use my result as an official document?

No. This is independent practice. A result does not replace an examination, certificate or knowledge check by an authorised organisation.