| #R001 | design | treatment | mandatory | Minimum gross tonnage for MARPOL Annex IV application | wastewater | requirement | >= 400 tons gross tonnage | Criteria for application of Annex IV of MARPOL requirements for sewage pollution prevention. | Applies to ships of this size or greater | high |
| #R002 | design | treatment | mandatory | Minimum passenger capacity for MARPOL Annex IV application | wastewater | requirement | > 15 persons | Criteria for application of Annex IV of MARPOL requirements for sewage pollution prevention. | Applies to ships certified to carry over this number of persons | high |
| #R003 | operational | treatment | mandatory | Prohibited discharge zone for untreated sewage (Small ships) | wastewater | requirement | 3 nautical miles | Discharge of untreated sewage is banned within this distance from land for smaller vessels. | Ships less than 400 tons in Canadian coastal waters | high |
| #R004 | operational | treatment | mandatory | Prohibited discharge zone for untreated sewage (Large ships) | wastewater | requirement | 12 miles | Discharge of untreated sewage is banned within this distance from land for larger vessels. | Ships larger than 400 tons in Canadian coastal waters | high |