{d) Sliip-to-shore radio traffic shall be carried on by the most 

 practicable and convenient route, having due regard for the economy 

 which may be effected by transmitting through naval radio stations. 

 Bar Harbor has been instructed to give priority to all traffic to and 

 from vessels on ice patrol duty, and that station should normally be 

 used, if possible. Headquarters will route all messages for vessels 

 on ice patrol through Bar Harbor. Should it develop that communi- 

 cation through Bar Harbor will be impracticable for an extended 

 period, headquarters should be so advised by the most practicable 

 means in order that dispatches may be routed accordingly. 



{e) Ice information will be given in as plain concise English as 

 practicable, and will state in the following order : 



(1) Position of patrol vessel. 



(2) Location and description of ice. 



(3) Other data. 



(/) In order that there may not arise any doubt as to the posi- 

 tion of the patrol vessel, the number and position of bergs reported 

 or sighted and other obstructions found necessary to report, the 

 following points should be emphasized : 



(1) The message to be made up of short sentences, each fol- 



lowed by the word " stop." 



(2) The latitude and longitude positions to consist of four 



words each and the latitude be separated from the 

 longitude by the word " dash " and after the longitude 

 position the word "stop" shall be used, viz., latitude 

 40° 00', longitude 50° 00' should be written " Four zero 

 zero zero dash five zero zero zero stop." 



(3) Distinction should be made clearly whether one berg was 



sighted or reported or more than one berg. 



(4) Clearly define whether the patrol vessel sighted the ice 



or obstructions or whether the patrol vessel received 

 the report of ice or obstructions from a passing vessel. 



(5) The message to be complete in itself, not referring to 



previous reports. 

 ig) Messages broadcast to other vessels should never contain such 

 phrases as " No ice south of ," etc. 



6. Attention is called to article 3235 (c), Kegulations, the pro- 

 visions of which will be followed in radiograms sent to the Hydro- 

 graphic Office. (See paragraph 5 {a) (3) of this order.) In 

 radiograms sent to vessels other than Coast Guard cutters the 

 words "latitude " and " longitude " will be used. 



7. The ice patrol vessels' radio call letters are NIDK. This is 

 a special " call " for the vessels actually on patrol, and must not be 

 confounded with the regular " call letters " of the vessels. 



