13 



fog that covered the southern half of the ice regions. The General 

 Greene made contact on May 30 and delivered a current map for the 

 ice regions. The fog lifted at 9 a. m. on May 31. The Pontchartrain 

 searched for the berg sighted on the 28th for the remainder of the day, 

 but was unable to locate it. 



On June 1, the Pontchartrain scouted to the westward as far as 

 longitude 51° 30' W. Then she searched to the northward to latitude 

 43° 00' N. Nothing was seen of the two bergs last seen in this area 

 on May 26. The area just south of the 100-fathom curve was searched 

 to the eastward. Bergs were sighted in latitude 42° 47' N., longitude 

 50° 58' W., and latitude 42° 41' N., longitude 49° 50' W. At 5 p. m. 

 the Pontchartrain headed to the westward for a rendezvous with the 

 Tampa. Contact was made at 8 a. m. on June 2 in latitude 43° 00' 

 N., longitude 53° 05' W. The ice observation party was transferred 

 to the Tampa and the Tampa relieved the Pontchartrain as ice-patrol 

 vessel. The Pontchartrain then proceeded to port. 



The entire time of the ice-patrol vessel was spent watching three 

 bergs that drifted south of the tail of the Banks. The drift of these 

 bergs can be followed on Figure 4. One of these bergs was first sighted 

 by the General Greene in 43° 08' N., 49° 09' W., on May 3. It was 

 last sighted by the Pontchartrain in latitude 42° 24' N., longitude 49° 

 55' W., on May 23 in an advanced stage of disintegration. As this 

 berg was not sighted or reported again, it is assumed that it had 

 broken up and melted. The paths of the two bergs watched between 

 longitudes 51° 00' W. and 52° 00' W., are particularly interesting, as 

 they drifted in almost opposite directions. Both bergs were in 

 approximately the same stage of disintegration, but the berg that 

 drifted northward had more sail area, and would therefore be affected 

 by the winds to a greater extent. The northern one of these bergs 

 was not sighted after May 26 on account of dense fog enshrouding the 

 ice regions. The change of the Canadian track from "E" to "F'^ 

 brought reports of ice to the north. Seventy bergs were reported 

 during the cruise north of latitude 47° 30' N., and between longitudes 

 45° 25' W. and 51° 30' W. The ice conditions from latitude 47° 30' 

 N., southward to latitude 43° 50' N., were not learned due to the 

 lack of vessels passing through this area. One berg was reported in 

 latitude 44° 30' N., longitude 43° 12' W., on May 30. The position 

 of this berg gives some information of the drift of those bergs that 

 curve to the eastward between latitudes 44° 00' N. and 43° 00' N. 



The following is a summary of the ice and water temperature 

 reports received during the present cruise: 



Number of bergs south of latitude 48° 00' N 36 



Number of bergs south of latitude 43° 00' N 5 



Number of ships furnishing ice reports 36 



161405—33 2 



