(1) A radio certificate shall be valid for 5 years from the date of issue or for such shorter period as may be specified in the certificate.
(2) Where a ship in respect of which a radio certificate has been issued is registered in Hong Kong and engaged on short voyages, and the certificate has not been extended under section 29 of the Ordinance nor this regulation, the Director may, on the application of the owner, agent or master of the ship, grant an extension of the certificate for a period not exceeding 1 month from the date of expiry of the certificate.
(3) Where a renewal survey of a ship in respect of which an extension of a radio certificate is granted under subregulation (2) is completed, the new radio certificate issued in consequence of the survey shall be valid for 5 years from the date of expiry of the existing certificate before the extension was granted or for such shorter period as may be specified in the certificate or, if the Director considers it is appropriate in the special circumstances of the case, valid for 5 years from the date of completion of the renewal survey or for such shorter period as may be specified in the certificate.