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| Name / Description | Entry Into Force Date | Canadian Date of Accession/Ratification |
| Convention on the International Regulations for Preventing Collisions at Sea, 1972, as amended (COLREG (amended) 1972) | 15 July 1977 | 7 March 1975 |
| 1981 Amendments (general) (A.464(XII)) | 1 June 1983 | |
| 1987 Amendments (general) (A.626(15)) | 19 November 1989 | |
| 1989 Amendment (general) (A.678(16)) | 19 April 1991 | |
| 1993 Amendments (general) (A.736(18)) | 4 November 1995 | |
| 2001 Amendments (general) (A.910(22)) | 29 November 2003 |