CI ?Q 

 SAFETY OF LIFE AT SEA 



(c) (i) Each cargo ship which in accordance with Regulation 3 of this 

 Chapter is fitted with a radiotelegraph station, if fitted with a radiotelegraph 

 auto alarm, shall, subject to the provisions of paragraph (d) of this Regulation, 

 and while at sea, listen on the radiotelegraph distress frequency by means of 

 a radio officer using headphones or a loud-speaker, for at least 8 hours a day 

 in the aggregate. However, Administrations may on cargo ships of 1,600 tons 

 gross tonnage and upwards but less than 3,500 tons gross tonnage permit the 

 hours of listening to be limited to not less than 2 hours a day in the aggregate 

 for a period of three years from the date of coming into force of the present 

 Convention. 



(ii) Each cargo ship of 300 tons gross tonnage and upwards but less 

 than 1,600 tons gross tonnage which is fitted with a radiotelegraph station as 

 a consequence of Regulation 4 of this Chapter, if fitted with a radiotelegraph 

 auto alarm shall, subject to the provisions of paragraph (d) of this Regulation, 

 and while at sea, listen on the radiotelegraph distress frequency by means of 

 a radio officer using headphones or a loud-speaker, during such periods as 

 may be determined by the Administration. Administrations shall, however, 

 have regard to the desirability of requiring, whenever practicable, a listening 

 watch of at least 8 hours a day in the aggregate. 



(d) During the period when a radio officer is required by this Regulation 

 to listen on the radiotelegraph distress frequency the radio officer may 

 discontinue such listening during the time when he is handling traffic on 

 other frequencies, or performing other essential radio duties, but only if it 

 is impracticable to listen by split headphones or loud-speaker. The listening 

 watch shall always be maintained by a radio officer using headphones or 

 loud-speaker during the silence periods provided for by the Radio 

 Regulations. 



{e) In all ships fitted with a radiotelegraph auto alarm this radiotelegraph 

 auto alarm shall, while the ship is at sea, be in operation whenever there is 

 no listening being kept under paragraphs (6), (c) or (cf) of this Regulation 

 and, whenever practicable, during direction-finding operations. 



(/) The listening periods provided for by this Regulation, including those 

 which are determined by the Administration, should be maintained preferably 

 during periods prescribed for the radiotelegraph service by the Radio 

 Regulations. 



Regulation 7 



Watches — Radiotelephone 



(a) Each ship which is fitted with a radiotelephone station in accordance 

 with Regulation 4 of this Chapter shall, for safety purposes, carry at least 

 one radiotelephone operator (who may be the master, an officer or a member 

 of the crew holding only a certificate for radiotelephony) and shall, subject 

 to the provisions of paragraph (b) of this Regulation, while at sea, maintain 



Ch. 4 



