306. (1) A Radio Inspector may inspect any ship for the purpose of seeing that she is properly provided with radio installation and certificated Radio Officers in conformity with this Chapter, and for this purpose may go on board any ship at all reasonable times and do all things necessary for such inspection and may also require the master of the ship to supply him with any information which it is in the power of the master to supply for the purposes of the provisions of this Chapter relating to radio installation and radio service, including the production of any certificate granted under this Part in respect of the installation and of the certificates of the Radio Officers on the ship:
Provided that if a valid Safety Convention Certificate is produced in respect of any ship such Certificate shall be accepted 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.
(2) If a Radio Inspector finds that a ship is not so provided, he shall give to the master or owner notice in writing pointing out the deficiency, and also pointing out what in his opinion is requisite to remedy the same.
(3) Every notice given under sub section (2) shall be communicated, in the prescribed manner, to the Collector of Customs of any port or place at which the ship may seek to obtain port clearance; and the Collector of Customs to whom a notice is so communicated shall order that the ship be detained until a certificate under the hand of a Radio Inspector is produced to the effect that the ship is properly provided with radio installation and certificated Radio Officers in conformity with this Chapter.
(4) The provisions of this section shall apply in relation to such portable radio apparatus as boats or life rafts may be required to carry by rules made under section 299 as they apply in relation to radio installation of a ship.