10 



possible every night to copy press and the synoptic weather reports 

 broadcast from Arlington, Va. Sometimes the noon weather reports 

 from the above station could be received and sometimes they could 

 not. 



Throughout the fifth cruise the General Greene maintained com- 

 munications with shipping about the Grand Banks in general accord- 

 ance with standard ice patrol practice. At 8 p. m. and 8 p. m., 

 plus three zone time, broadcasts were sent out giving the ship's posi- 

 tion and the weather and a summary of ice reports. Water tem- 

 perature reports were asked for and gathered from the area between 

 41° N. to 49° N. and 45° W. to 54° W. A few such reports were 

 received from ships located outside of the above limits. The General 

 Greeners hourly temperature values and all of the 204 reports received 

 by radio were considered when drawing in the surface isotherms on 

 the cruise chart. For these isotherms and the ship's track see 

 Figure 26. 



SIXTH CRUISE (THE NORTHERN OCEANOGRAPHIC CRUISE), JULY 



4-AUGUST 18, 1931 



The General Greeners first five cruises of 1931 were to the region 

 about the Grand Banks. The sixth cruise was something entirely 

 different, being a scientific expedition to the waters lying between 

 Newfoundland and Labrador on the one hand and southwest Green- 

 land on the other. 



The General Greene had orders during the cruise to reoccupy the 

 Marion expedition oceanographic stations of 1928 as far north as 

 Resolution Island on Hudson Strait and Ivigtut, Greenland. These 

 orders were carefully carried out, and an account of the events and 

 observations made during the cruise are here set down. This last 

 cruise of 1931 was by far the longest and, because made in a rela- 

 tively unfrequented region, also the most interesting. Considerable 

 space, therefore, has been devoted to describing it. To make the 

 different features clearer, the cruise report has been divided into 

 several sections. The sliip's track and various other features are 

 shown on Figure 27. 



NARRATIVE OF THE CRUISE 



At 6.45 p. m. on July 4, 1931, the General Greene left St. John's, 

 Newfoundland, and headed northeastward. Nine miles off the 

 harbor entrance the first oceanographic station of the northern 

 oceanographic cruise (International Ice Patrol Station No. 1220) 

 was occupied. Thanks to intensive training at oceanographic work 

 during the fifth cruise, there was no trouble or delay at this station. 

 In fact, throughout the 122 stations taken during the northern cruise 

 there were very few delays and but little trouble with any of the 



