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

See also

• · IMDG Code reference — full class guide, packing groups, segregation, and documentation.
• · MARPOL discharge checker — discharge rules for HME cargo residues.
• · STS operations — safety during ship-to-ship transfers of dangerous cargo.

Last updated 2026-04-27