29 



The commanding officer of the Modoc made the following com- 

 prehensive report to the commander, International Tee Patrol, upon 

 relief on June 25. 



{n) Only two bergs are below latitude 43°, but well above latitude 

 42°. Both are disintegrating rapidly and will be gone in 10 or 12 

 days. The bergs are wind-borne and drift as the wind blows. 



(6) The Labrador current has practically been pinched off. 



ic) The Gulf stream is invading this area rapidly as is evidenced 

 by the rising temperatures. The area between 42° and 4.3° is covered 

 with pockets of cold water which have no motion. 



id) The current tendencies are well to the northw^ard of latitude 

 42° and it is believed safe to say that no ice can possibly drift to the 

 southward of 42° at any time from now on, thus making the trans- 

 Atlantic lanes absolutely safe and ready for shifting on July 1. No 

 new bergs have been reported south of latitude 48° which would 

 indicate a cessation of Labrador current, and the only current that 

 is left is between 4.5° and 48°, due probably to the momentum of the 

 original stream. 



(f) The area between 43° and 45° has been covered by a number 

 of vessels without reporting ice, except on one occasion, June 15, 

 a berg being sighted in latitude 43° 52' N., longitude 4S° 51' N., fog 

 existing at the time, but this position was very doubtful. 



(/) No bergs have been reported or seen south of latitude 42° 

 this year. 



{(j) The critical areas have been searched and no ice found. 



SEVENTH CRUISE, "TAMPA," JUNE 25-JULY 9 



The Tampa beginning her fourth cruise on June 25, continued the 

 search for the remains of the berg to the eastward that was guarded 

 by the Modoc. Upon relieving the Tampa the commanding officer 

 of the Modoc stated that it was his intention to make a search for 

 the berg previously reported to the northward. At 4 p. m., June 15, 

 this berg was found by the Modoc in latitude 42° 41' N., longitude 

 50° 56' W., broken into three parts with much small ice in immediate 

 vicinity and rapidl}' dis'integrating. On the evening of June 25, a 

 resume of ice conditions was submitted to headquarters as follows: 



Coast Guard, 



Washington, D. C. 

 Estimate of ice situation June 25. Only two bergs reported south of forty- 

 fourth parallel as follows: Berg 4230 N. 4800 W. This berg has been under 

 constant surveillance since May 21 by patrol vessel and is now rapidly dis- 

 integrating. This berg is drifting north-northeast and sea water temperature in 

 vicinity is .57°. Other berg found at 4 p. m. to-day by Modoc 4241- N. 5056 W. 

 drifting west-northwest sea water temperature in vicinity 53° small growlers 

 nearby. Both these bergs rapidly disintegrating. No report of bergs south of 

 latitude 45° except the two mentioned above has been recorded since June 9. 



