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!

CD0190. H2S - Hydrogen Sulphide Awareness

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 — CD0190. H2S - Hydrogen Sulphide Awareness” contains 36 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.

Over what time are the H₂S levels averaged when calculating ISGOTT’s TLV-TWA?

One correct answer

  • 24 hours
  • 15 minutes
  • 1 hour
  • 8 hours✓ Correct answer
How does the density of H₂S compare to that of air?

One correct answer

  • Air is heavier than H₂S
  • H₂S is heavier than air✓ Correct answer
  • H₂S is the same density as air
What is the ISGOTT Time Weighted Average exposure limit (TLV-TWA) quoted for H₂S in this module?

One correct answer

  • 5 ppm✓ Correct answer
  • 15 ppm
  • 20 ppm
  • 10 ppm
Your company procedures for H₂S hazards give a ppm level for TLV-STEL. What does ‘STEL’ stand for?

One correct answer

  • Short Term Exposure Limit✓ Correct answer
  • Sulphur Time Exposure Life
  • Short Term Entry Level
  • Sulphur Test Expiry Limit
What does ISGOTT recommend that you do when the H₂S level is expected to rise rapidly, such as when removing cargo line blanks?

One correct answer

  • Undo the bolts at arms length
  • Run a fan nearby to blow the gas away
  • Take H₂S readings more often
  • Wear SCBA✓ Correct answer

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.