SAFETY OF LIFE AT SEA C131 



K' {}>) A reliable emergency light shall be provided in the radiotelegraph 

 operating room, consisting of an electric lamp permanently arranged so as to 

 provide satisfactory illumination of the operating controls of the main and 

 reserve radiotelegraph installations and of the clock required by paragraph (f) 

 of this Regulation. In new installations, this lamp shall, if supplied from the 

 reserve source of energy required by sub-paragraph (iii) of paragraph (a) of 

 Regulation 9 of this Chapter, be controlled by two-way switches placed near 

 the main entrance to the radiotelegraph operating room and at the radio- 

 telegraph operating position, unless the layout of the radiotelegraph operating 

 room does not warrant it. These switches shall be clearly labelled to indicate 

 their purpose. 



(h) Either an electric inspection lamp, operated from the reserve source of 

 energy required by sub-paragraph (iii) of paragraph (o) of Regulation 9 of this 

 Chapter and provided with a flexible lead of adequate length, or a flashlight 

 shall be provided and kept in the radiotelegraph operating room. 



(/) The radiotelegraph station shall be provided with such spare parts, 

 tools and testing equipment as will enable the radiotelegraph installation to 

 be maintained in efficient working condition while at sea. The testing equip- 

 ment shall include an instrument or instruments for measuring A.C. volts, 

 D.C. volts and ohms. 



0) If a separate emergency radiotelegraph operating room is provided the 

 requirements of paragraphs {d), (e), (/), (.;') and (//) of this Regulation shall 

 apply to it. 



Regulation 9 



Radiotelegraph Installations 



{a) Except as otherwise expressly provided in this Regulation — 



(i) The radiotelegraph station shall include a main installation and a 

 reserve installation, electrically separate and electrically independent 

 of each other. 



(ii) The main installation shall include a main transmitter, main receiver 

 and main source of energy. 



(iii) The reserve installation shall include a reserve transmitter, reserve 

 receiver and reserve source of energy. 



(iv) A main and a reserve aerial shall be provided and installed, provided 

 that the Administration may except any ship from the provision 

 of a reserve aerial if it is satisfied that the fitting of such an aerial 

 is impracticable or unreasonable, but in such case a suitable spare 

 aerial completely assembled for immediate installation shall be 

 carried. In addition, sufficient aerial wire and insulators shall in 

 all cases be provided to enable a suitable aerial to be erected. 



The main aerial, if suspended between supports liable to 

 whipping, shall be suitably protected against breakage. 



{h) In installations on cargo ships (except those on cargo ships of 1,600 

 tons gross tonnage and upwards installed on or after 19 November, 1952), 



Ch. 4 



