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4. Consultative or special mectings of the Contracting Parties shall 
keep under continuing review the implementation of this Convention 
and may, ¢nter alia: 
(a) review and adopt amendments to this Convention and its 
Annexes in accordance with Article XV; 
(6) invite the appropriate scientific body or bodies to collabo- 
rate with and to advise the Parties or the Organisation on any 
scientific or technical aspect relevant to this Convention. inelud- 
ing particularly the content of the Annexes; 
(c) receive and consider reports made pursuant to Article 
VI(4): 
(7) promote co-operation with and between regional organisa- 
tions concerned with the prevention of marine pollution ; 
(e) develop or adopt, in consultation with appropriate Inter- 
national Organisations, procedures referréd to in Article V(2), 
including basic criteria for determining exceptional and emer- 
gency situations, and procedures for consultative advice and the 
safe disposal of matter in such circumstances, including the 
designation of appropriate dumping areas, and recommend ac- 
cordingly ; 
(f) Consider any additional action that may be required. 
5. The Contracting Parties at their first consultative meeting shall 
establish rules of procedure as necessary. 
ARTICLE XV 
1. (a) At meetings of the Contracting Parties called in accordance 
with Article XTV amendments to this Convention may be adopted by a 
two-thirds majority of those present. An amendment shall enter into 
force for the Parties which have accepted it on the sixtieth day after 
two-thirds of the Parties shall have deposited an instrument of accept- 
ance of the amendment with the Organisation. Thereafter the amend- 
ment shall enter into force for any other Party 30 days after that 
Party deposits its instrument of acceptance of the amendment. 
(b) The Organisation shall inform all Contracting Parties of any 
request made for a special meeting under Article XIV and of any 
amendments adopted at meetings of the Parties and of the date on 
which each such amendment enters into force for each Party. 
2, Amendments to the Annexes will be based on scientific or techni- 
eal considerations. Amendments to the Annexes approved by a two- 
thirds majority of those present at a meeting called in accordance with 
Article XIV shall enter into force for each Contracting Party immedi- 
ately on notification of its acceptance to the Organisation and 100 days 
after approval by the meeting for all other Parties except for those 
which before the end of the 100 days make a declaration that they are 
not able to accept the amendment at that time. Parties should en- 
deavour to signify their acceptance of an amendment to the Organisa- 
tion as soon as possible after approval at a meeting. A Party may at 
any time substitute an acceptance for a previous declaration of objec- 
tion and the amendment previously objected to shall thereupon enter 
into force for that Party. 
3. An acceptance or declaration of objection under this Article shall 
be made by the deposit of an instrument with the Organisation. The 
