MARPOL Annex II Category X/Y/Z Assignment
Classify a chemical cargo by MARPOL Annex II hazard category. Drives prewash, stripping and discharge-distance requirements.
Prewash
Only if high-viscosity or solidifying
Stripping efficiency
≤ 75 L per tank
Discharge requirements
Under way ≥ 12 nm from land, depth ≥ 25 m, speed ≥ 7 kn
Formula, assumptions, and limits
MARPOL Annex II Reg 13 operational rules. Category assignment is per cargo - see IBC Code 17, MEPC.2/Circ. annual list. Ship must carry P&A Manual (Procedures and Arrangements) approved by flag.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| MARPOL Annex II class | - | IBC Code / MEPC.2/Circ. |