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CD0060. Navigation in Ice

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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 — CD0060. Navigation in Ice” contains 86 questions across 1 collection.

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Sample questions and answers

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

What is “nilas”

One correct answer

  • A massive piece of ice
  • Ridged ice
  • Rafted ice
  • A thin elastic crust of ice✓ Correct answer
When an icebreaker is breaking a track through large heavy floes at slow speed, the track can be expected to be how wide?

One correct answer

  • 10 – 20 % wider than the icebreaker beam
  • 30 – 40 % wider than the icebreaker beam✓ Correct answer
  • 50 – 60 % wider than the icebreaker beam
  • 70 – 80 % wider than the icebreaker beam
Which type of glacial ice is most difficult to detect?

One correct answer

  • Growlers✓ Correct answer
  • Bergy bits
  • Icebergs
  • Pack ice
When a ship is expected to enter areas with very cold air, what should be done with tanks and lines?

One correct answer

  • Filling all tanks and lines with water
  • Stripping all lines and tanks for water✓ Correct answer
  • Insulate all possible tanks and lines
  • Nothing
When will towing normally be provided by the icebreaker?

One correct answer

  • When requested by escorted ships Master
  • On Owners request
  • In an emergency✓ Correct answer
  • Never

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