IMDG dangerous goods class quiz
The International Maritime Dangerous Goods Code (IMDG Code) classifies all dangerous goods carried by sea into 9 classes (with subdivisions). Recognising a class number and understanding its hazard is essential for cargo planning, stowage, and emergency response.
- Class 1 — Explosives (divisions 1.1–1.6)
- Class 2 — Gases (flammable, non-flammable, toxic)
- Class 3 — Flammable liquids
- Class 4 — Flammable solids / spontaneous combustion / dangerous when wet
- Class 5 — Oxidising substances and organic peroxides
- Class 6 — Toxic and infectious substances
- Class 7 — Radioactive material
- Class 8 — Corrosive substances
- Class 9 — Miscellaneous dangerous goods
Score
0 / 0
1.2
IMDG class / division
What is the hazard for this class?
When to use this tool
Container-ship cargo planning + segregation review (Class 3 flammables cannot be stowed adjacent to Class 5.1 oxidisers, etc.), pre-loading cargo document review, ship's DG Officer certification preparation, IMDG Code refresher during longer voyages.
Regulatory basis
IMDG Code — mandatory under SOLAS Chapter VII Part A. Current Amendment 42-24 came into force 1 January 2026 (voluntary application from 1 Jan 2025). IMO Model Course 3.21 covers IMDG Code training. Interlocks with MARPOL Annex III (harmful substances in packaged form) + CTU Code.