| 1. | Convention on the International Maritime Organization. Geneva, 6 March 1948 | 12 | 1 | | XII | | 267 | Convention on the International Maritime Organization | XII-1 |
| 1.a. | Amendments to articles 17 and 18 of the Convention on the International Maritime Organization. London, 15 September 1964 | 12 | 1 | a | XII | | 268 | Amendments to articles 17 and 18 of the Convention on the International Maritime Organization | XII-1-a |
| 1.b. | Amendment to article 28 of the Convention on the International Maritime Organization. London, 28 September 1965 | 12 | 1 | b | XII | | 269 | Amendment to article 28 of the Convention on the International Maritime Organization | XII-1-b |
| 1.c. | Amendments to articles 10, 16, 17, 18, 20, 28, 31 and 32 of the Convention on the International Maritime Organization. London, 17 October 1974 | 12 | 1 | c | XII | | 270 | Amendments to articles 10, 16, 17, 18, 20, 28, 31 and 32 of the Convention on the International Maritime Organization | XII-1-c |
| 1.d. | Amendments to the title and substantive provisions of the Convention on the International Maritime Organization. London, 14 November 1975 and 9 November 1977 | 12 | 1 | d | XII | | 271 | Amendments to the title and substantive provisions of the Convention on the International Maritime Organization | XII-1-d |
| 1.e. | Amendments to articles 17, 18, 20 and 51 of the Convention on the International Maritime Organization. London, 17 November 1977 | 12 | 1 | e | XII | | 272 | Amendments to articles 17, 18, 20 and 51 of the Convention on the International Maritime Organization | XII-1-e |
| 1.f. | Amendments to the Convention on the International Maritime Organization relating to the institutionalization of the Committee on Technical Co-operation in the Convention. London, 15 November 1979 | 12 | 1 | f | XII | | 273 | Amendments to the Convention on the International Maritime Organization relating to the institutionalization of the Committee on Technical Co-operation in the Convention | XII-1-f |
| 1.g. | Amendments to the Convention on the International Maritime Organization, (institutionalization of the Facilitation Committee). London, 7 November 1991 | 12 | 1 | g | XII | | 274 | Amendments to the Convention on the International Maritime Organization, (institutionalization of the Facilitation Committee) | XII-1-g |
| 1.h. | Amendments to the Convention on the International Maritime Organization. London, 4 November 1993 | 12 | 1 | h | XII | | 275 | Amendments to the Convention on the International Maritime Organization | XII-1-h |
| 2. | Convention regarding the Measurement and Registration of Vessels Employed in Inland Navigation. Bangkok, 22 June 1956 | 12 | 2 | | XII | | 276 | Convention regarding the Measurement and Registration of Vessels Employed in Inland Navigation | XII-2 |
| 3. | Convention relating to the unification of certain rules concerning collisions in inland navigation. Geneva, 15 March 1960 | 12 | 3 | | XII | | 277 | Convention relating to the unification of certain rules concerning collisions in inland navigation | XII-3 |
| 4. | Convention on the registration of inland navigation vessels. Geneva, 25 January 1965 | 12 | 4 | | XII | | 278 | Convention on the registration of inland navigation vessels | XII-4 |
| 5. | Convention on the measurement of inland navigation vessels. Geneva, 15 February 1966 | 12 | 5 | | XII | | 279 | Convention on the measurement of inland navigation vessels | XII-5 |
| 6. | Convention on a Code of Conduct for Liner Conferences. Geneva, 6 April 1974 | 12 | 6 | | XII | | 280 | Convention on a Code of Conduct for Liner Conferences | XII-6 |
| 7. | United Nations Convention on Conditions for Registration of Ships. Geneva, 7 February 1986 | 12 | 7 | | XII | | 281 | United Nations Convention on Conditions for Registration of Ships | XII-7 |
| 8. | International Convention on Arrest of Ships, 1999. Geneva, 12 March 1999 | 12 | 8 | | XII | | 336 | International Convention on Arrest of Ships, 1999 | XII-8 |