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CES questions

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About this collection

The CES collection contains questions for seafarers' professional knowledge checks. Start with the main question bank, study answers one at a time, or use a random selection to check your knowledge in exam mode.

“CES — Основная” contains 10,413 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.

XNYM. Which type temperature sensors are shown on the picture?

One correct answer

  • Thermistor type PTC
  • Thermocouple sensors
  • Thermistors type NTC
  • Resistance sensors✓ Correct answer
OHUC. On which is it compulsory with ODME in connection with the cargo system?

One correct answer

  • On tankers of 150 gross tonnage and above.✓ Correct answer
  • On tankers of 250 gross tonnage and above.
  • On all tankers irrespective of size.
  • On tankers of 500 gross tonnage and above.
WKSS. Indicate the correct name for the tool on the sketch:

One correct answer

  • Open end wrench
  • Chisel
  • Adjustable wrench✓ Correct answer
  • Pliers
HDAT. For a large decrease in the specific gravity of the oil, the gravity disc hole diameter should be:

One correct answer

  • Kept the same.
  • Reduced.
  • Hole diameter is of no importance.
  • Increased.✓ Correct answer
EJJC. What is the period of validity of Safety Radio

One correct answer

  • Indefinite
  • 1 year✓ Correct answer
  • 2 years
  • 5 years

Before you start

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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.