12.—For subsection (4) of section 15 of the Act of 1952 (which specifies the radio installations to be required under the radio rules) there shall be substituted the following subsection:—
“(4) The radio installation required under the said rules to be provided—
(a) for a passenger steamer of whatever tonnage, or for any ship of sixteen hundred tons gross tonnage or upwards which is neither a passenger steamer nor a fishing vessel, shall be a radiotelegraph installation; and
(b) for any other ship shall be either a radiotelephone installation or a radiotelegraph installation, at the option of the owner.”
