11 



. KESUME 



During this cruise suggestions as to safe courses to avoid ice on 

 requests of masters of vessels were made in 18 instances; 36 special 

 broadcasts locating positions of icebergs were sent out, in addition 

 to regularly scheduled ice broadcasts; 7 reports of obstructions were 

 broadcast; 25 weather reports were transmitted to passing vessels; 

 912 temperature reports and 7 obstruction reports were received 

 from merchant vessels. 



WEATHER 

 (See Charts Nos. 9, 10, and 16) 



The weather experienced during the cruise was very unfavorable 

 for the work outlined with the exception of three days. Moderate 

 breezes to moderate gales were experienced generally with moderate 

 to rough seas. However, the weather was most favorable with excel- 

 lent visibility on the days during which it was possible to explore the 

 ice fields. Bergs were sighted from the masthead at a distance of 

 18 miles during that time. The amount of fog was average. 



WATER TEMPERATURES 



(See Charts Nos. 9 and 10) 



Nine hundred and fifteen water temperatures were received and 

 plotted. The water temperature chart bore out the results of the 

 data obtained from the stations. It further indicated that the 55° 

 isotherm (cold wall) had not moved appreciably to the northward 

 since the last report. The Arctic water had retreated considerably 

 since the preceding period, the area around Flemish Cap having been 

 covered with warmer water by a swirl of the Gulf stream and the 

 western boundary of the frigid water having been pushed to the 

 northeastward by the Banks' water between Flemish Cap and the 

 100-fathom curve of the Banks so as to leave a narrow tongue of 

 Arctic water projecting to the eastward in latitude 47° 30' N. The 

 leg extending southward was also covered on the surface by the 

 warmer Gulf stream waters up to a point midway between the 

 forty-fourth and forty-fifth parallels. The influence of the Labrador 

 current, however, was still felt around the Tail of the Banks, its 

 existence being marked by an eddy of comparatively cold water 

 between 40 and 45° F. extending southeastward from the Tail 

 almost to the fortieth parallel. Almost the entire area of the Banks 

 was covered with the characteristic Banks' water of low salinity and 

 temperature range from 34 to 40° F. to such an extent as to eliminate 

 the tongue of Arctic water that extended along the eastern edge of the 



