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(2) A ship required to hold a certificate in accordance with the provisions of 
the Regulations is subject while in the ports or off-shore terminals under the 
jurisdiction of a Party to inspection by officers duly authorized by that Party. 
Any such inspection shall be limited to verifying that there is on board a valid 
certificate, unless there are clear grounds for believing that the condition of the 
ship or its equipment does not correspond substantially with the particulars of 
that certificate. In that case, or if the ship does not carry a valid certificate, the 
Party carrying out the inspection shall take such steps as will ensure that the 
ship shall not sail until it can procced to sea without presenting an unreasonahle 
threat of harm to the marine environment. That Party may, however, grant such 
a ship permission to leave the port or off-shore terminal for the purpose of pro- 
ceeding to the nearest appropriate repair yard available. 
(3) If a Party denies a foreign ship entry to the ports or off-shore terminals 
under its jurisdiction or takes any action against such a ship for the reason that 
the ship does not comply with the provisions of the present Convention, the 
arty shall immediately inform the consul or diplomatic representative of the 
Party whose flag the ship is entitled to fly, or if this is not possible, the Admin- 
istration of the ship concerned. Before denying entry or taking such action the 
Party may request consultation with the Administration of the ship concerned. 
Information shall also be given to the Administration when a ship does pot 
carry a valid certificate in accordance with the provisions of the Regulations, 
(4) With respect to the ships of non-Parties to the Convention, Parties shall 
apply the requirements of the present Convention as may be necessary to ensure 
that no more favourable treatment is given to such ships. 
Article 6 
DETECTION OF VIOLATIONS AND ENFORCEMENT OF THLE CONVENTION 
(1) Parties to the Convention shall co-operate in the detection of violations 
and the enforcement of the provisions of the present Convention, using all ap- 
propriate and practicable measures of detection and environinental monitoring, 
adequate procedures for reporting and accumulation of evidence. 
(2) A ship to which the present Convention applies may, in any port or off- 
shore terminal of a Party, be subject to inspection by officers appointed or au- 
thorized by that Party for the purpose of verifying whether the ship has dis- 
charged any harmful substances in violation of the provisions of the Regula- 
tions. If an inspection indicates a violation of the Convention, a report shall be 
forwarded to the Administration for any appropriate action. 
(3) Any Party shall furnish to the Administration evidence, if any, that the 
ship has discharged harmful substances or effluents containing such substances 
in violation of the provisions of the Regulations. If it is practicable to do so, the 
competent authority of the former Party shall notify the master of the ship of 
the alleged violation. 
(4) Upon receiving such evidence, the Administration so informed shall 
investigate the matter, and may request the other Party to furnish further or 
better evidence of the alleged contravention. If the Administration is satisfied 
that sufficient evidence is available to enable proceedings to be brought in respect 
of the alleged violation, it shall cause such proceedings to be taken in accordance - 
with its law as soon as possible. The Administration shall promptly inform the 
Party which has reported the alleged violation, as well as the Organization, of 
the action taken. 
(5) A Party may also inspect a ship to which the present Convention applies 
when it enters the ports or off-shore terminals under its jurisdiction, if a request 
for an investigation is received from any Party together with sufficient evidence 
that the ship has discharged harmful substances or effluents containing such 
substances in any place. The report of such investigation shall be sent to the 
Party requesting it and to the Administration so that the appropriate action 
may be taken under the present Convention. 
Article 7 
UNDUE DELAY TO SHIPS 
(1) All possible efforts shall be made to avoid a ship being unduly detained 
or delayed under Articles 4, 5 and 6 of the present Convention. 
