Your examiner asks: "What does MARPOL Annex III regulate, and how does it relate to the IMDG Code?"

A. Annex III regulates the prevention of pollution by harmful substances carried by sea in packaged form, and is given effect largely through the IMDG Code's marine pollutant identification, packing, marking, labelling, documentation and stowage provisions — a substance can be a "marine pollutant" under Annex III/IMDG regardless of whether it is also dangerous under another IMDG hazard class.

B. Annex III applies only to bulk cargoes and has no application to packaged goods; packaged dangerous goods sit entirely outside MARPOL.

C. Annex III is identical in scope to Annex II and simply repeats the noxious-liquid-in-bulk categorisation for packaged goods.

D. Annex III requirements are voluntary industry guidance with no IMO Convention status.

A. Annex II regulates the carriage of noxious liquid substances in bulk and categorises them by hazard to marine resources/human health as Category X (major hazard, discharge prohibited), Y (hazard, discharge restricted by concentration/distance/speed), Z (minor hazard, less restrictive limits) and OS (Other Substances, evaluated as presenting no hazard, outside the Category X/Y/Z scheme).

B. Annex II only applies to crude oil carried in chemical tankers and uses the same Category A/B/C/D scheme as IMSBC.

C. Annex II categorises substances solely by flashpoint, with no relevance to discharge or tank-washing procedures.

D. Annex II applies only to substances also listed under the IMDG Code; substances not in IMDG are unregulated under Annex II.

A. A mandatory record, analogous to the Oil Record Book, of every cargo and tank-cleaning operation involving noxious liquid substances — loading, internal transfer, unloading, tank washing/prewash, slop disposal, and discharge of residues — with dates, positions, quantities and the substance's category, retained for inspection by PSC.

B. A voluntary commercial log used only to record freight rates and demurrage, with no MARPOL legal status.

C. The Cargo Record Book is required only for Category X substances; Y, Z and OS cargoes have no equivalent recording obligation.

D. The Cargo Record Book replaces the IOPP Certificate for chemical tankers and removes the need for an Oil Record Book.