Z INrERNATIONAL. ICE OBSERVATION AND ICE PATROL SERVICE. 



5. Scientific Observer E. F. B. Fries will be directed to assemble 

 the scientific instruments and the materiel necessary for making and 

 recording oceanographic data, and to report on board the Seneca at 

 New York, January 25, 1922. You will afford the scientist every 

 facility for, and assistance in, making such observations and collect- 

 ing such data as he may desire, bearing in mind that the main duty 

 of the Seneca is to keep track of the ice movements ; and this practical 

 work of the Seneca must not be subordinated to the work of scien- 

 tific observation. It should be borne in mind, however, that the 

 work of ice observation is highly important, and it is believed that 

 most valuable data can be collected from these observations without 

 in any way interfering with the primary duty of the Seneca. 



6. It is the present intention of Headquarters to detail two vessels, 

 other than the Seneca, to perform the continuous ice patrol which 

 past experience has shown should commence about April 1, and 

 continue throughout the season of dangerous ice conditions. You 

 will make such recommendation as is pertinent if, in your opinion, 

 from your observation, the constant ice patrol should commence 

 earlier than April 1, 1922. 



7. On your passage to the eastward, you will report your position 

 daily to Headquarters through coast naval radio stations as long as 

 practicable, and thereafter through Canadian radio stations. If not 

 practicable to send by any of these stations, you will relay through 

 any vessel within reach. After locating the ice, you will discon- 

 tinue reports to Headquarters, and make these radio reports to the 

 Hydrographic Office, New York City. These reports for the Hydro- 

 graphic Office will be sent by you daily at 4 a. m., seventy-fifth 

 meridian time, and addressed to '^ Hydrographic, New York." The 

 ice information to be sent to that office will be in as plain and concise 

 English as practicable, and will state the following, all numbers to 

 be spelled out: 



(a) Ice (berg or field) . 

 (6) Date. 



(c) Time (seventy-fifth meridian time). 

 {d) Latitude. ■ 

 (e) Longitude. 



if) Other data as may be necessary. 

 Whenever practicable these ice reports will be sent via Cape Race 

 Radio Station. 



8. Ice information will be given at any time to any ship with 

 which the Seneca can communicate. You will notify the Canadian 

 radio stations through which you communicate that they are at 

 liberty to forward a copy of your ice reports to the proper Canadian 

 authorities. 



