311. (1) If the Government is satisfied in respect of a Bangladesh ship, other than a passenger ship, which is required by the provisions of section 303 to be provided with radio installation and which is intended to ply on voyages from or to any port or place in Bangladesh to or from any port or place outside Bangladesh that the ship complies with all the provisions as to radio installation and radio service applicable to such ship under Chapter 22, the Government shall, on an application by the owner or master of the ship, cause to be issued through the Principal Officer or such other officer as it may appoint in this behalf-(a) if the ship is provided with radio telegraph equipment, a Cargo Ship Safety Radio telegraphy Certificate;(b) if the ship is provided with radio telephone equipment, a Cargo Ship Safety Radio telephony Certificate; or(c) if there is in force in respect of the ship referred to in clause (a), an Exemption Certificate granted under section 313 and if the ship complies with all the aforesaid requirements other than those from which the ship is exempt under that Certificate, a Qualified Cargo Ship Safety Radio telegraphy Certificate. (2) The Cargo Ship Safety Radio telegraphy Certificate shall be in the prescribed form and shall state that the ship complies with such of the requirements of the Safety Convention as to radio telegraphy and radio direction-finding equipment as are applicable to the ship. (3) The Cargo Ship Safety Radio telephony Certificate shall be in the prescribed form and shall state that the ship complies with the requirements of the Safety Convention as to radio telephone equipment and radio service. (4) The Qualified Cargo Ship Safety Radio telegraphy Certificate shall be in the prescribed form and shall state in what respect the ship complies with requirements of the Safety Convention as to radio installation.