OFFICERS AND MERCHANT SEAMEN 153 



persons who have not passed the examinations organized in virtue of 

 paragraph 2(b) of this Article who — 



(a) have in fact had sufficient practical experience of the duties 

 corresponding to the certificate in question ; and 



(b) have no record of any serious technical error against them. 



ARTICLE 5 



1. Each Member which ratifies this Convention shall ensure its due 

 enforcement by an efficient system of inspection. 



2. National laws or regulations shall provide for the cases in which 

 the authorities of a Member may detain vessels registered in its 

 territory on account of a breach of the provisions of this Convention. 



3. Where the authorities of a Member which has ratified this Con- 

 vention find a breach of its provisions on a vessel registered in the 

 territory of another Member which has also ratified the Convention, 

 the said authorities shall commimicate with the consul of the Member 

 in the territory of which the vessel is registered. 



ARTICLE 6 



1. National laws or regulations shall prescribe penalties or disci- 

 plinary measures for cases in which the provisions of this Convention 

 are not respected. 



2. In particular, such penalties or disciplinary measures shall be 

 prescribed for cases in which — 



(a) a shipowner, shipowner's agent, master or skipper has en- 

 gaged a person not certificated as required by tliis Convention ; 



(b) a master or skipper has allowed any of the duties defined in 

 Article 2 of this Convention to be performed by a person not holding 

 the corresponding or a superior certificate ; 



(c) a person has obtained by fraud or forged documents an en- 

 gagement to perform any of the duties defined in the said Article 2 

 without holding the requisite certificate. 



ARTICLE 7 



1. In respect of the territories referred to in Article 35 of the con- 

 stitution of the International Labor Organization, each Member of 

 the organization which ratifies this Convention shall append to its 

 ratification a declaration stating ; 



(a) the territories in respect of which it undertakes to apply 

 the provisions of the Convention without modification ; 



(b) the territories in respect of which it undertakes to apply 

 the provisions of the Convention subject to modifications, together 

 with details of the said modifications; 



(c) the territories in respect of which the Convention is in- 

 applicable and in such cases the grounds on which it is inapplicable; 



(d) the territories in respect of which it reserves its decision. 



2. The undertakings referred to in subparagraphs (a) and (b) of 

 paragraph 1 of this article shall be deemed to be an integral part of 

 the ratification and shall have the force of ratification. 



3. Any member may by a subsequent declaration cancel in whole 



