Your examiner asks: "What does MARPOL Annex II regulate, and how are noxious liquid substances categorised?"

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

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 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).

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

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

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. 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.

A. The Procedures and Arrangements (P&A) Manual, approved by the flag state/RO, specifies for each cargo tank the substances that may be carried and the corresponding stripping, tank-washing, prewash and discharge procedures required to meet Annex II/IBC Code criteria — it is ship-specific and must be carried on board and followed exactly, since cargo categories drive different prewash and discharge requirements.

B. The P&A Manual is a generic IMO publication identical for all chemical tankers, requiring no ship-specific approval.

C. The P&A Manual only covers personnel arrangements (watch rota) for cargo operations and has no link to discharge procedures.

D. The P&A Manual is required only for gas carriers, not chemical tankers, and is unrelated to MARPOL Annex II.