Convention for the Suppression of Unlawful Acts Against the 
Safety of Maritime Navigation 

Done at Rome, 10 March 1988 

Entered into force 1 March 1992 

THE STATES PARTIES TO THIS CONVENTION, 

HAVING IN MIND the purposes and principles of the Charter of the 
United Nations concerning the maintenance of international peace 
and security and the promotion of friendly relations and 
co-operation among States, 

RECOGNIZING in particular that everyone has the right to life, 
liberty and security of person, as set out in the Universal 
Declaration of Human Rights and the International Covenant on 
Civil and Political Rights, 

DEEPLY CONCERNED about the world-wide escalation of acts of 
terrorism in all its forms, which endanger or take innocent 
human lives, jeopardize fundamental freedoms and seriously 
impair the dignity of human beings, 

CONSIDERING that unlawful acts against the safety of maritime 
navigation jeopardize the safety of persons and property, 
seriously affect the operation of maritime services, and 
undermine the confidence of the peoples of the world in the 
safety of maritime navigation, 

CONSIDERING that the occurrence of such acts is a matter of 
grave concern to the international community as a whole, 

BEING CONVINCED of the urgent need to develop international 
co-operation between States in devising and adopting effective 
and practical measures for the prevention of all unlawful acts 
against the safety of maritime navigation, and the prosecution 
and punishment of their perpetrators, 

RECALLING resolution 40/61 of the General Assembly of the United 
Nations of 9 December 1985 which, inter alia, "urges all States 
unilaterally and in co-operation with other States, as well as 
relevant United Nations organs, to contribute to the progressive 
elimination of causes underlying international terrorism and to 
pay special attention to all situations, including colonialism, 
racism and situations involving mass and flagrant violations of 
human rights and fundamental freedoms and those involving alien 
occupation, that may give rise to international terrorism and 
may endanger international peace and security", 

RECALLING FURTHER that resolution 40/61 "unequivocally condemns, 
as criminal, all acts, methods and practices of terrorism 
wherever and by whomever committed, including those which 
jeopardize friendly relations among States and their security", 

RECALLING ALSO that by resolution 40/61, the International 
Maritime Organization was invited to "study the problem of 
terrorism aboard or against ships with a view to making 
recommendations on appropriate measures", 

HAVING IN MIND resolution A.584(14) of 20 November 1985, of the 
Assembly of the International Maritime Organization, which 
called for development of measures to prevent unlawful acts 
which threaten the safety of ships and the security of their 
passengers and crews, 

NOTING that acts of the crew which are subject to normal 
shipboard discipline are outside the purview of this Convention, 

AFFIRMING the desirability of monitoring rules and standards 
relating to the prevention and control of unlawful acts against 
ships and persons on board ships, with a view to updating them 
as necessary, and, to this effect, taking note with satisfaction 
of the Measures to Prevent Unlawful Acts against Passengers and 
Crews on Board Ships, recommended by the Maritime Safety 
Committee of the International Maritime Organization, 

AFFIRMING FURTHER that matters not regulated by this Convention 
continue to be governed by the rules and principles of general 
international law, 

RECOGNIZING the need for all States, in combating unlawful acts 
against the safety of maritime navigation, strictly to comply 
with rules and principles of general international law, 

HAVE AGREED as follows: 

Article 1 

For the purposes of this Convention, "ship" means a vessel of 
any type whatsoever not permanently attached to the sea-bed, 
including dynamically supported craft, submersibles, or any 
other floating craft. 

Article 2 

1. This Convention does not apply to: 

(a) a warship; or 

(b) a ship owned or operated by a State when being used as a 
naval auxiliary or for customs or police purposes; or 

(c) a ship which has been withdrawn from navigation or laid up. 

2. Nothing in this Convention affects the immunities of warships 
and other government ships operated for non-commercial purposes. 

Article 3 

1. Any person commits an offence if that person unlawfully and 
intentionally: 

(a) seizes or exercises control over a ship by force or threat 
thereof or any other form of intimidation; or 

(b) performs an act of violence against a person on board a ship 
if that act is likely to endanger the safe navigation of that 
ship; or 

(c) destroys a ship or causes damage to a ship or to its cargo 
which is likely to endanger the safe navigation of that ship; or 

(d) places or causes to be placed on a ship, by any means 
whatsoever, a device or substance which is likely to destroy 
that ship, or cause damage to that ship or its cargo which 
endangers or is likely to endanger the safe navigation of that 
ship; or 

(e) destroys or seriously damages maritime navigational 
facilities or seriously interferes with their operation, if any 
such act is likely to endanger the safe navigation of a ship; or 

(f) communicates information which he knows to be false, thereby 
endangering the safe navigation of a ship; or 

(g) injures or kills any person, in connection with the 
commission or the attempted commission of any of the offences 
set forth in subparagraphs (a) to (f). 

2. Any person also commits an offence if that person: 

(a) attempts to commit any of the offences set forth in 
paragraph 1; or 

(b) abets the commission of any of the offences set forth in 
paragraph 1 perpetrated by any person or is otherwise an 
accomplice of a person who commits such an offence; or 

(c) threatens, with or without a condition, as is provided for 
under national law, aimed at compelling a physical or juridical 
person to do or refrain from doing any act, to commit any of the 
offences set forth in paragraph 1, subparagraphs (b), (c) and 
(e), if that threat is likely to endanger the safe navigation of 
the ship in question. 

Article 4 

1. This Convention applies if the ship is navigating or is 
scheduled to navigate into, through or from waters beyond the 
outer limit of the territorial sea of a single State, or the 
lateral limits of its territorial sea with adjacent States. 

2. In cases where the Convention does not apply pursuant to 
paragraph 1, it nevertheless applies when the offender or the 
alleged offender is found in the territory of a State Party 
other than the State referred to in paragraph 1. 

Article 5 

Each State Party shall mkae the offences set forth in article 3 
punishable by appropriate penalties which take into account the 
grave nature of those offences. 

Article 6 

1. Each State Party shall take such measures as may be necessary 
to establish its jurisdiction over the offences set forth in 
article 3 when the offence is committed: 

(a) against or on board a ship flying the flag of the State at 
the time the offence is committed; or 

(b) in the territory of that State, including its territorial 
sea; or 

(c) by a national of that State. 

2. A State Party may also establish its jurisdiction over any 
such offence when: 

(a) it is committed by a stateless person whose habitual 
residence is in that State; or 

(b) during its commission a national of that State is seized, 
threatened, injured or killed; or 

(c) it is committed in an attempt to compel that State to do or 
abstain from doing any act. 

3. Any State Party which has established jurisdiction mentioned 
in paragraph 2 shall notify the Secretary-General of the 
International Maritime Organization (hereinafter referred to as 
"the Secretary-General"). If such State Party subsequently 
rescinds that jurisdiction, it shall notify the 
Secretary-General. 

4. Each State Party shall take such measures as may be necessary 
to establish its jurisdiction over the offences set forth in 
article 3 in cases where the alleged offender is present in its 
territory and it does not extradite him to any of the States 
Parties which have established their jurisdiction in accordance 
with paragraphs 1 and 2 of this article. 

5. This Convention does not exclude any criminal jurisdiction 
exercised in accordance with national law. 

Article 7 

1. Upon being satisfied that the circumstances so warrant, any 
State Party in the territory of which the offender or the 
alleged offender is present shall, in accordance with its law, 
take him into custody or take other measures to ensure his 
presence for such time as is necessary to enable any criminal or 
extradition proceedings to be instituted. 

2. Such State shall immediately make a preliminary inquiry into 
the facts, in accordance with its own legislation. 

3. Any person regarding whom the measures referred to in 
paragraph 1 are being taken shall be entitled to: 

(a) communicate without delay with the nearest appropriate 
representative of the State of which he is a national or which 
is otherwise entitled to establish such communication or, if he 
is a stateless person, the State in the territory of which he 
has his habitual residence; 

(b) be visited by a representative of that State. 

4. The rights referred to in paragraph 3 shall be exercised in 
conformity with the laws and regulations of the State in the 
territory of which the offender or the alleged offender is 
present, subject to the proviso that the said laws and 
regulations must enable full effect to be given to the purposes 
for which the rights accorded under paragraph 3 are intended. 

5. When a State Party, pursuant to this article, has taken a 
person into custody, it shall immediately notify the States 
which have established jurisdiction in accordance with article 
6, paragraph 1 and, if it considers it advisable, any other 
interested States, of the fact that such person is in custody 
and of the circumstances which warrant his detention. The State 
which makes the preliminary inquiry contemplated in paragraph 2 
of this article shall promptly report its findings to the said 
States and shall indicate whether it intends to exercise 
jurisdiction. 

Article 8 

1. The master of a ship of a State Party (the "flag State") may 
deliver to the authorities of any other State Party (the 
"receiving State") any person who he has reasonable grounds to 
believe has committed one of the offences set forth in article 
3. 

2. The flag State shall ensure that the master of its ship is 
obliged, whenever practicable, and if possible before entering 
the territorial sea of the receiving State carrying on board any 
person whom the master intends to deliver in accordance with 
paragraph 1, to give notification to the authorities of the 
receiving State of his intention to deliver such person and the 
reasons therefor. 

3. The receiving State shall accept the delivery, except where 
it has grounds to consider that the Convention is not applicable 
to the acts giving rise to the delivery, and shall proceed in 
accordance with the provisions of article 7. Any refusal to 
accept a delivery shall be accompanied by a statement of the 
reasons for refusal. 

4. The flag State shall ensure that the master of its ship is 
obliged to furnish the authorities of the receiving State with 
the evidence in the master's possession which pertains to the 
alleged offence. 

5. A receiving State which has accepted the delivery of a person 
in accordance with paragraph 3 may, in turn, request the flag 
State to accept delivery of that person. The flag State shall 
consider any such request, and if it accedes to the request it 
shall proceed in accordance with article 7. If the flag State 
declines a request, it shall furnish the receiving State with a 
statement of the reasons therefor. 

Article 9 

Nothing in this Convention shall affect in any way the rules of 
international law pertaining to the competence of States to 
exercise investigative or enforcement jurisdiction on board 
ships not flying their flag. 

Article 10 

1. The State Party in the territory of which the offender or the 
alleged offender is found shall, in cases to which article 6 
applies, if it does not extradite him, be obliged, without 
exception whatsoever and whether or not the offence was 
committed in its territory, to submit the case without delay to 
its competent authorities for the purpose of prosecution, 
through proceedings in accordance with the laws of that State. 
Those authorities shall take their decision in the same manner 
as in the case of any other offence of a grave nature under the 
law of that State. 

2. Any person regarding whom proceedings are being carried out 
in connection with any of the offences set forth in article 3 
shall be guaranteed fair treatment at all stages of the 
proceedings, including enjoyment of all the rights and 
guarantees provided for such proceedings by the law of the State 
in the territory of which he is present. 

Article 11 

1. The offences set forth in article 3 shall be deemed to be 
included as extraditable offences in any extradition treaty 
existing between any of the States Parties. States Parties 
undertake to include such offences as extraditable offences in 
every extradition treaty to be concluded between them. 

2. If a State Party which makes extradition conditional on the 
existence of a treaty receives a request for extradition from 
another State Party with which it has no extradition treaty, the 
requested State Party may, at its option, consider this 
Convention as a legal basis for extradition in respect of the 
offences set forth in article 3. Extradition shall be subject to 
the other conditions provided by the law of the requested State 
Party. 

3. States Parties which do not make extradition conditional on 
the existence of a treaty shall recognize the offences set forth 
in article 3 as extraditable offences between themselves, 
subject to the conditions provided by the law of the requested 
State. 

4. If necessary, the offences set forth in article 3 shall be 
treated, for the purposes of extradition between States Parties, 
as if they had been committed not only in the place in which 
they occurred but also in a place within the jurisdiction of the 
State Party requesting extradition. 

5. A State Party which receives more than one request for 
extradition from States which have established jurisdiction in 
accordance with article 6 and which decides not to prosecute 
shall, in selecting the State to which the offender or alleged 
offender is to be extradited, pay due regard to the interests 
and responsibilities of the State Party whose flag the ship was 
flying at the time of the commission of the offence. 

6. In considering a request for the extradition of an alleged 
offender pursuant to this Convention, the requested State shall 
pay due regard to whether his rights as set forth in article 7, 
paragraph 3, can be effected in the requesting State. 

7. With respect to the offences as defined in this Convention, 
the provisions of all extradition treaties and arrangements 
applicable between States Parties are modified as between States 
Parties to the extent that they are incompatible with this 
Convention. 

Article 12 

1. State Parties shall afford one another the greatest measure 
of assistance in connection with criminal proceedings brought in 
respect of the offences set forth in article 3, including 
assistance in obtaining evidence at their disposal necessary for 
the proceedings. 

2. States Parties shall carry out their obligations under 
paragraph 1 in conformity with any treaties on mutual assistance 
that may exist between them. In the absence of such treaties, 
States Parties shall afford each other assistance in accordance 
with their national law. 

Article 13 

1. States Parties shall co-operate in the prevention of the 
offences set forth in article 3, particularly by: 

(a) taking all practicable measures to prevent preparations in 
their respective territories for the commission of those 
offences within or outside their territories; 

(b) exchanging information in accordance with their national 
law, and co-ordinating administrative and other measures taken 
as appropriate to prevent the commission of offences set forth 
in article 3. 

2. When, due to the commission of an offence set forth in 
article 3, the passage of a ship has been delayed or 
interrupted, any State Party in whose territory the ship or 
passengers or crew are present shall be bound to exercise all 
possible efforts to avoid a ship, its passengers, crew or cargo 
being unduly detained or delayed. 

Article 14 

Any State Party having reason to believe that an offence set 
forth in article 3 will be committed shall, in accordance with 
its national law, furnish as promptly as possible any relevant 
information in its possession to those States which it believes 
would be the States having established jurisdiction in 
accordance with article 6. 

Article 15 

1. Each State Party shall, in accordance with its national law, 
provide to the Secretary-General, as promptly as possible, any 
relevant information in its possession concerning: 

(a) the circumstances of the offence; 

(b) the action taken pursuant to article 13, paragraph 2; 

(c) the measures taken in relation to the offender or the 
alleged offender and, in particular, the results of any 
extradition proceedings or other legal proceedings. 

2. The State Party where the alleged offender is prosecuted 
shall, in accordance with its national law, communicate the 
final outcome of the proceedings to the Secretary-General. 

3. The information transmitted in accordance with paragraphs 1 
and 2 shall be communicated by the Secretary-General to all 
States Parties, to Members of the International Maritime 
Organization (hereinafter referred to as "the Organization"), to 
the other States concerned, and to the appropriate international 
intergovernmental organizations. 

Article 16 

1. Any dispute between two or more States Parties concerning the 
interpretation or application of this Convention which cannot be 
settled through negotiation within a reasonable time shall, at 
the request of one of them, be submitted to arbitration. If, 
within six months from the date of the request for arbitration, 
the parties are unable to agree on the organization of the 
arbitration any one of those parties may refer the dispute to 
the International Court of Justice by request in conformity with 
the Statute of the Court. 

2. Each State may at the time of signature or ratification, 
acceptance or approval of this Convention or accession thereto, 
declare that it does not consider itself bound by any or all of 
the provisions of paragraph 1. The other States Parties shall 
not be bound by those provisions with respect to any State Party 
which has made such a reservation. 

3. Any State which has made a reservation in accordance with 
paragraph 2 may, at any time, withdraw that reservation by 
notification to the Secretary-General. 

Article 17 

1. This Convention shall be open for signature at Rome on 10 
March 1988 by States participating in the International 
Conference on the Suppression of Unlawful Acts against the 
Safety of Maritime Navigation and at the Headquarters of the 
Organization by all States from 14 March 1988 to 9 March 1989. 
It shall thereafter remain open for accession. 

2. States may express their consent to be bound by this 
Convention by: 

(a) signature without reservation as to ratification, acceptance 
or approval; or 

(b) signature subject to ratification, acceptance or approval, 
followed by ratification, acceptance or approval; or 

(c) accession. 

3. Ratification, acceptance, approval or accession shall be 
effected by the deposit of an instrument to that effect with the 
Secretary-General. 

Article 18 

1. This Convention shall enter into force ninety days following 
the date on which fifteen States have either signed it without 
reservation as to ratification, acceptance or approval, or have 
deposited an instrument of ratification, acceptance, approval or 
accession in respect thereof. 

2. For a State which deposits an instrument of ratification, 
acceptance, approval or accession in respect of this Convention 
after the conditions for entry into force thereof have been met, 
the ratification, acceptance, approval or accession shall take 
effect ninety days after the date of such deposit. 

Article 19 

1. This Convention may be denounced by any State Party at any 
time after the expiry of one year from the date on which this 
Convention enters into force for that State. 

2. Denunciation shall be effected by the deposit of an 
instrument of denunciation with the Secretary-General. 

3. A denunciation shall take effect one year, or such longer 
period as may be specified in the instrument of denunciation, 
after the receipt of the instrument of denunciation by the 
Secretary-General. 

Article 20 

1. A conference for the purpose of revising or amending this 
Convention may be convened by the Organization. 

2. The Secretary-General shall convene a conference of the 
States Parties to this Convention for revising or amending the 
Convention, at the request of one third of the States Parties, 
or ten States Parties, whichever is the higher figure. 

3. Any instrument of ratification, acceptance, approval or 
accession deposited after the date of entry into force of an 
amendment to this Convention shall be deemed to apply to the 
Convention as amended. 

Article 21 

1. This Convention shall be deposited with the 
Secretary-General. 

2. The Secretary-General shall: 

(a) inform all States which have signed this Convention or 
acceded thereto, and all Members of the Organization, of: 

(i) each new signature or deposit of an instrument of 
ratification, acceptance, approval or accession together with 
the date thereof; 

(ii) the date of the entry into force of this Convention; 

(iii) the deposit of any instrument of denunciation of this 
Convention together with the date on which it is received and 
the date on which the denunciation takes effect; 

(iv) the receipt of any declaration or notification made under 
this Convention; 

(b) transmit certified true copies of this Convention to all 
States which have signed this Convention or acceded thereto. 

3. As soon as this Convention enters into force, a certified 
true copy thereof shall be transmitted by the Depositary to the 
Secretary-General of the United Nations for registration and 
publication in accordance with Article 102 of the Charter of the 
United Nations. 

Article 22 

This Convention is established in a single original in the 
Arabic, Chinese, English, French, Russian and Spanish languages, 
each text being equally authentic. 

IN WITNESS WHEREOF the undersigned being duly authorized by 
their respective Governments for that purpose have signed this 
Convention. 

DONE AT ROME this tenth day of March one thousand nine hundred 
and eighty-eight.