| 1. |
| 12 | 1 | | XII | | 267 | /Treaties/1958/03/19580317 05-05 PM/Ch_XII_1p.pdf | Convention on the International Maritime Organization |
| 1.a. |
| 12 | 1 | a | XII | | 268 | /Treaties/1967/10/19671006 05-17 PM/Ch_XII_1_ap.pdf | Amendments to articles 17 and 18 of the Convention on the International Maritime Organization |
| 1.b. |
| 12 | 1 | b | XII | | 269 | /Treaties/1968/11/19681103 05-48 PM/Ch_XII_1_bp.pdf | Amendment to article 28 of the Convention on the International Maritime Organization |
| 1.c. |
| 12 | 1 | c | XII | | 270 | /Treaties/1978/04/19780401 05-29 PM/Ch_XII_1_cp.pdf | Amendments to articles 10, 16, 17, 18, 20, 28, 31 and 32 of the Convention on the International Maritime Organization |
| 1.d. |
| 12 | 1 | d | XII | | 271 | /Treaties/1982/05/19820522 05-44 PM/Ch_XII_1_dp.pdf | Amendments to the title and substantive provisions of the Convention on the International Maritime Organization |
| 1.e. |
| 12 | 1 | e | XII | | 272 | /Treaties/1984/11/19841110 05-25 PM/Ch_XII_1_ep.pdf | Amendments to articles 17, 18, 20 and 51 of the Convention on the International Maritime Organization |
| 1.f. |
| 12 | 1 | f | XII | | 273 | /Treaties/1984/11/19841110 05-20 PM/Ch_XII_1_fp.pdf | Amendments to the Convention on the International Maritime Organization relating to the institutionalization of the Committee on Technical Co-operation in the Convention |
| 1.g. |
| 12 | 1 | g | XII | | 274 | /Treaties/1998/09/19980901 05-38 PM/Ch_XII_1_gp.pdf | Amendments to the Convention on the International Maritime Organization, (institutionalization of the Facilitation Committee) |
| 1.h. |
| 12 | 1 | h | XII | | 275 | /Treaties/1993/11/19931104 05-33 PM/Ch_XII_1_hp.pdf | Amendments to the Convention on the International Maritime Organization |
| 2. |
| 12 | 2 | | XII | | 276 | /Treaties/1956/06/19560623 09-07 AM/Ch_XII_2p.pdf | Convention regarding the Measurement and Registration of Vessels Employed in Inland Navigation |
| 3. |
| 12 | 3 | | XII | | 277 | /Treaties/1966/09/19660913 02-18 AM/Ch_XII_3p.pdf | Convention relating to the unification of certain rules concerning collisions in inland navigation |
| 4. |
| 12 | 4 | | XII | | 278 | /Treaties/1982/06/19820624 09-51 PM/Ch_XII_4p.pdf | Convention on the registration of inland navigation vessels |
| 5. |
| 12 | 5 | | XII | | 279 | /Treaties/1975/04/19750419 02-56 AM/Ch_XII_5p.pdf | Convention on the measurement of inland navigation vessels |
| 6. |
| 12 | 6 | | XII | | 280 | /Treaties/1983/04/19830406 01-16 AM/Ch_XII_6p.pdf | Convention on a Code of Conduct for Liner Conferences |
| 7. |
| 12 | 7 | | XII | | 281 | /Treaties/1986/02/19860207 08-58 AM/Ch_XII_07p.pdf | United Nations Convention on Conditions for Registration of Ships |
| 8. |
| 12 | 8 | | XII | | 336 | /Treaties/1999/03/19990312 09-14 AM/Ch_XII_8p.pdf | International Convention on Arrest of Ships, 1999 |