15 



set for this i)osition and at 5.50 p. m., the same day the berg was 

 found in latitude 45° 07' N., longitude 48° 31' W., 44 miles from the 

 first report. It was recognized as No. 1 or the original "dry dock." 

 As this was the southernmost ice it was decided to maintain position 

 near it until it was no longer a menace. On May 2 station No. 34 

 was taken showing warm water on the surface but with traces of 

 Arctic water below. Mining experiments were carried out with neg- 

 ligible results. On the forenoon of May 3 the area in the vicinity of 

 the berg was searched but no new ice was seen. Later on in the 

 day upon returning to the berg 6-pounder shells were fired into it 

 but they did very little damage. 



A number of 6-pounder bm-sting charges proved to be duds. The 

 projectiles embedded themselves in the ice for a depth of about 8 

 inches. They remained in the bergs for a considerable time there- 

 after. Streaks of rust from them made excellent identification 

 marfe. Stations Nos. 35 and 36 were occupied on May 4 in the 

 vicinity of the berg, both showing traces of Arctic water. On May 5, 

 mining experiments and sonic tests were carried out on it. A dense 

 fog shut in at noon May 5 which lasted until May 8, during which 

 time the patrol vessel remained close by the southernmost ice. The 

 Tompa was relieved at 2.40 p. m. May 8 in latitude 45° 06' N., 

 longitude 51° 58' W. By using the radiocompasses the two vessels 

 were able to lay o]>posite courses on a line of bearing which brought 

 them together with accuracy, avoiding delay in relief. 



RESUME 



During this cruise 1 steamer and 1 French fisherman were furnished 

 their positions; 27 vessels were furnished special ice information; 6 

 special ice broadcasts were transmitted in addition to the regular 

 broadcasts, and 28 weather reports were transmitted to passing ships. 

 Two obstruction reports were received from Cape Race and 4 from 

 steamers. These were later broadcast. 



WEATHER 



(See Charts Nos. 10, 11, and 16) 



The weather conditions on this cruise were for a great part un- 

 favorable for good scouting, and for that reason only the southern- 

 most ice was searched for and position maintained near it. This 

 was found to be bergs Nos. 7 and 9. The patrol began with the 

 barometer verj^^ low, having dropped suddenly on A]:)ril 22 from 

 30.12 at 7 a. m. to 29.63 at midnight of the same day and continuing 

 to drop to its lowest 29.22, at 7 p. m. on Aj^ril 23. The barometer 

 rose and fell alternately until 1 a. m., April 29, when it steadied 

 itself and rose gradually until its highest point, 30.22 on May 2 at 



