AGREEMENT FOR CO-OPERATION IN DEALING WITH POLLUTION OF  
THE NORTH SEA BY OIL AND OTHER HARMFUL SUBSTANCES 

Bonn, 13 September 1983 


The Governments of the Kingdom of Belgium, the Kingdom of  
Denmark, the French Republic, the Federal Republic of Germany, the  
Kingdom of the Netherlands, the Kingdom of Norway, the Kingdom of  
Sweden, the United Kingdom of Great Britain and Northern Ireland  
and the European Economic Community, 

Recognizing that pollution of the sea by oil and other harmful  
substances in the North Sea area may threaten the marine  
environment and the interests of coastal States, 

Noting that such pollution has many sources and that casualties  
and other incidents at sea are of great concern, 

Convinced that an ability to combat such pollution is well as  
active co-operation and mutual assistance among States are  
necessary for the protection of their coasts and related  
interests, 

Welcoming the progress that has already been achieved within the  
framework of the Agreement for Co-operation in dealing with  
Pollution of the North Sea by Oil, signed at Bonn on 9 June 1969, 

Wishing to develop further mutual assistance and co-operation in  
combating pollution, 

Have agreed as follows: 


Article 1 

This Agreement shall apply whenever the presence or the  
prospective presence of oil or other harmful substances polluting  
or threatening to pollute the sea within the North Sea area, as  
defined in Article 2 of this Agreement, presents a grave and  
imminent danger to the coast or related interests of one or more  
Contracting Parties. 


Article 2 

For the purpose of this Agreement the North Sea area means the  
North Sea proper southwards of latitude 61 deg N, together with: 

(a) the Skagerrak, the southern limit of which is determined east  
of the Skaw by the latitude 57 deg 44.8 min N; 

(b) the English Channel and its approaches eastwards of a line  
drawn fifty nautical miles to the west of a line joining the  
Scilly Isles and Ushant. 


Article 3 

1. The Contracting Parties consider that protection against  
pollution of the kind referred to in Article 1 of this Agreement  
is a matter which calls for active cooperation between them. 

2. The Contracting Parties shall jointly develop and establish  
guidelines for the practical, operational and technical aspects of  
joint action. 


Article 4 

Contracting Parties undertake to inform the other Contracting  
Parties about: 

(a) their national organization for dealing with pollution of the  
kind referred to in Article 1 of this Agreement; 

(b) the competent authority responsible for receiving and  
dispatching reports of such pollution and for dealing with  
questions concerning measures of mutual assistance between  
Contracting Parties; 

(c) their national means for avoiding or dealing with such  
pollution, which might be made available for international  
assistance; 

(d) new ways in which such pollution may be avoided and about new  
effective measures to deal with it; 

(e) major pollution incidents of this kind dealt with. 


Article 5 

1. Whenever a Contracting Party is aware of a casualty or the  
presence of oil or other harmful substances in the North Sea area  
likely to constitute a serious threat to the coast or related  
interests of any other Contracting Party, it shall inform that  
Party without delay through its competent authority. 

2. The Contracting Parties undertake to request the masters of all  
ships flying their flags and pilots of aircraft registered in  
their countries to report without delay through the channels which  
may be most practicable and adequate in the circumstances: 

(a) all casualties causing or likely to cause pollution of the  
sea; 

(b) the presence, nature and extent of oil or other harmful  
substances likely to constitute a serious threat to the coast or  
related interests of one or more Contracting Parties. 

3. The Contracting Parties shall establish a standard form for the  
reporting of pollution as required under paragraph 1 of this  
Article. 


Article 6 

1. For the sole purpose of this Agreement the North Sea area is  
divided into the zones described in the Annex to this Agreement. 

2. The Contracting Party within whose zone a situation of the kind  
described in Article 1 of this Agreement occurs, shall make the  
necessary assessments of the nature and extent of any casualty or,  
as the case may be, of the type and approximate quantity of oil or  
other harmful substances and the direction and speed of movement  
thereof. 

3. The Contracting Party concerned shall immediately inform all  
the other Contracting Parties through their competent authorities  
of its assessments and of any action which it has taken to deal  
with the oil or other harmful substances and shall keep these  
substances under observation as long as they are present in its  
zone. 

4. The obligations of the Contracting Parties under the provisions  
of this Article with respect to the zones of joint responsibility  
shall be the subject of special technical arrangements to be  
concluded between the Parties concerned. These arrangements shall  
be communicated to the other Contracting Parties. 


Article 7 

A Contracting Party requiring assistance to deal with pollution  
or the prospective presence of pollution at sea or on its coast  
may call on the help of the other Contracting Parties. Contracting  
Parties requesting assistance shall specify the kind of assistance  
they require. The Contracting Parties called upon for help in  
accordance with this Article shall use their best endeavours to  
bring such assistance as is within their power taking into  
account, particularly in the case of pollution by harmful  
substances other than oil, the technological means available to  
them. 


Article 8 

1. The provisions of this Agreement shall not be interpreted as in  
any way prejudicing the rights and obligations of the Contracting  
Parties under international law, especially in the field of the  
prevention and combating of marine pollution. 

2. In no case shall the division into zones referred to in Article  
6 of this Agreement be invoked as a precedent or argument in any  
matter concerning sovereignty or jurisdiction. 


Article 9 

1. In the absence of an agreement concerning the financial  
arrangements governing actions of Contracting Parties to deal with  
pollution which might be concluded on a bilateral or multilateral  
basis or on the occasion of a joint combating operation,  
Contracting Parties shall bear the costs of their respective  
actions in dealing with pollution in accordance with subparagraph  
(a) or subparagraph (b) below: 

(a) If the action was taken by one Contracting Party at the  
express request of another Contracting Party, the Contracting  
Party requesting such assistance shall reimburse to the assisting  
Contracting Party the costs of its action; 

(b) If the action was taken by a Contracting Party on its own  
initiative, this Contracting Party shall bear the costs of its  
action. 

 2. The Contracting Party requesting assistance may cancel its  
request at any time, but in that case it shall bear the costs  
already incurred or committed by the assisting Contracting Party. 


Article 10 

Unless otherwise agreed the costs of action taken by a  
Contracting Party at the request of another Contracting Party  
shall be calculated according to the law and current practice in  
the assisting country concerning the reimbursement of such costs  
by a person or entity liable. 


Article 11 

Article 9 of this Agreement shall not be interpreted as in any  
way prejudicing the rights of Contracting Parties to recover from  
third parties the costs of action to deal with pollution or the  
threat of pollution under other applicable provisions and rules of  
national and international law. 


Article 12 

1. Meetings of the Contracting Parties shall be held at regular  
intervals and at any time when, due to special circumstances, it  
is so decided in accordance with the Rules of Procedure. 

2. The Contracting Parties at their first meeting shall draw up  
Rules of Procedure and Financial Rules, which shall be adopted by  
unanimous vote. 

3. The Depositary Government shall convene the first meeting of  
Contracting Parties as soon as possible after the entry into force  
of this Agreement. 


Article 13 

Within the areas of its competence, the European Economic  
Community is entitled to a number of votes equal to the number of  
its Member States which are Contracting Parties to the present  
Agreement. The European Economic Community shall not exercise its  
right to vote in cases where its Member States exercise theirs and  
conversely. 


Article 14 

It shall be the duty of meetings of the Contracting Parties: 

(a) to exercise overall supervision over the implementation of  
this Agreement; 

(b) to review the effectiveness of the measures taken under this  
Agreement; 

(c) to carry out such other functions as may be necessary under  
the terms of this Agreement. 


Article 15 

1. The Contracting Parties shall make provision for the  
performance of secretariat duties in relation to this Agreement,  
taking into account existing arrangements in the framework of  
other international agreements on the prevention of marine  
pollution in force for the same region as this Agreement. 

2. Each Contracting Party shall contribute 2.5% towards the annual  
expenditure of the Agreement. The balance of the Agreement's  
expenditure shall be divided among Contracting Parties other than  
the European Economic Community in proportion to their gross  
national product in accordance with the scale of assessment  
adopted regularly by the United Nations General Assembly. In no  
case shall the contribution of a Contracting Party to this balance  
exceed 20% of the balance. 


Article 16 

1. Without prejudice to Article 17 of this Agreement, a proposal  
by a Contracting Party for the amendment of this Agreement or its  
Annex shall be considered at a meeting of the Contracting Parties.  
Following adoption of the proposal by unanimous vote the amendment  
shall be communicated by the Depositary Government to the  
Contracting Parties. 

2. Such an amendment shall enter into force on the first day of  
the second month following the date on which the Depositary  
Government has received notifications of approval from all  
Contracting Parties. 


Article 17 

1. Two or more Contracting Parties may modify the common  
boundaries of their zones described in the Annex to this  
Agreement. 

2. Such a modification shall enter into force for all Contracting  
Parties on the first day of the sixth month following the date of  
its communication by the Depositary Government unless, within a  
period of three months following that communication, a Contracting  
Party has expressed an objection or has requested consultation on  
the matter. 


Article 18 

1. This Agreement shall be open for signature by the Governments  
of the States invited to participate in the Conference on the  
Agreement for Cooperation in Dealing with Pollution of the North  
Sea by Oil and Other Harmful Substances, held at Bonn on 13  
September 1983, and by the European Economic Community. 

2. These States and the European Economic Community may become  
Parties to this Agreement either by signature without reservation  
as to ratification, acceptance or approval or by signature subject  
to ratification, acceptance or approval followed by ratification,  
acceptance or approval. 

3. Instruments of ratification, acceptance or approval shall be  
deposited with the Government of the Federal Republic of Germany. 


Article 19 

1. This Agreement shall enter into force on the first day of the  
second month following the date on which the Governments of all  
the States mentioned in Article 18 of this Agreement and the  
European Economic Community have signed the Agreement without  
reservation as to ratification, acceptance or approval or have  
deposited an instrument of ratification, acceptance or approval. 

2. Upon the entry into force of this Agreement, the Agreement for  
Co-operation in dealing with Pollution of the North Sea by Oil,  
done at Bonn on 9 June 1969, shall cease to be in force. 


Article 20 

1. The Contracting Parties may unanimously invite any other  
coastal State of the North East Atlantic area to accede to this  
Agreement. 

2. In such a case Article 2 of this Agreement and its Annex shall  
be amended as necessary. The amendments shall be adopted by  
unanimous vote at a meeting of the Contracting Parties and shall  
take effect upon the entry into force of this Agreement for the  
acceding State. 


Article 21 

1. For each State acceding to this Agreement, the Agreement shall  
enter into force on the first day of the second month following  
the date of deposit by such State of its instrument of accession. 

2. Instruments of accession shall be deposited with the Government  
of the Federal Republic of Germany. 


Article 22 

1. After this Agreement has been in force for five years it may be  
denounced by any Contracting Party. 

2. Denunciation shall be effected by a notification in writing  
addressed to the Depositary Government which shall notify all the  
other Contracting Parties of any denunciation received and of the  
date of its receipt. 

3 . A denunciation shall take effect one year after its receipt by  
the Depositary Government. 


Article 23 

The Depositary Government shall inform the Contracting Parties  
and those referred to in Article 18 of this Agreement of: 

(a) any signature of this Agreement; 

(b) the deposit of any instrument of ratification, acceptance,  
approval or accession and of the receipt of any notice of  
denunciation; 

(c) the date of entry into force of this Agreement; 

(d) the receipt of any notification of approval relating to  
amendments to this Agreement or its Annex and of the date of entry  
into force of such amendments. 


Article 24 

The original of this Agreement, of which the English, French and  
German texts are equally authentic, shall be deposited with the  
Government of the Federal Republic of Germany, which shall send  
certified copies thereof to the Contracting Parties and which  
shall transmit a certified copy to the Secretary-General of the  
United Nations for registration and publication in accordance with  
Article 102 of the Charter of the United Nations. 

In witness whereof the undersigned, being duly authorised thereto  
by their respective Governments, have signed this Agreement. 

Done at Bonn, this thirteenth day of September 1983.