20 INTE.RNATIONAL ICE OBSERVATION AND ICE PATROL SERVICE. 



graphic station 191, lat. 42° 30' N., long. 51° 47' W., we found the 

 surface temperatures to be 52° F. and 40° F, in the same locahty, 

 lat. 42° 20' N., long. 52° 30' W. These variations in temperature 

 would indicate a rapid mingling of the surface waters. At station 

 191, we found that the Labrador Current was overriding the Gulf 

 Stream. During the night of the 25th we stood NE. at slow speed. 



April 26, the weather continued unfavorable, with fresh SE. winds 

 and fog throughout the day, with rough sea, the barometer bein^ 

 steady and low. At daylight, we arrived at station 192, lat. 42° 50 

 N., long. 51° 25' W., and, after taking the usual observations, pro- 

 ceeded to station 193, lat. 43° 10' N., long. 51° 05' W. We then 

 stood for central station on the Grand Banks, but as we could not 

 make it by daylight, stopped at dark and drifted. The temperature 

 of the surface water on the Grand Banks this date was found to 

 be 32° F. 



On April 27, steamed ahead at daylight for the central oceano- 

 graphical station, lat. 43° 45' N., long. 50° 25' W., where we arrived 

 at 9.30 a. m. and took the usual tests, after which the Seneca anchored 

 in 27 fathoms of water. During the day, we experienced fresh winds 

 from SSW., which fell to light winds at the end of the day. Dense 

 fog prevailed until sunset and a heavy SSW. swell, which moderated 

 toward night. The barometer rose from 29.63 inches to 29.80 

 inches. 



April 28 began with gentle SSW. wind, increasing to strong wind 

 at noon, ^\'ith heavy SSW. swell. The weather was foggy in the 

 forenoon and clearing in the afternoon. At 2 p. m., weighed anchor 

 and steamed to the southward. During the day, intercepted mes- 

 sages to vessels passing to the northward on tracks 8 and 9, bound 

 to Halifax and the St. Lawrence, concerning ice conditions on their 

 routes. The Seneca informed Cape Race Radio Station that such 

 information would hereafter be broadcast by the patrol vessel 

 and requested that station to -so inform inquiring vessels. 



April 29 began with a moderate SW. wand, which veered to a light 

 NW. breeze during the day. Cloudy weather, which became overcast 

 with showers at sunset, was experienced. By forenoon the sea had 

 moderated and we steamed, full speed, to search for bergs to the 

 southward and westward of the Great Bank. At dark, stopped 

 and drifted, having covered the area between meridians 50° W. and 

 51° W. and parallels 42° N. and 43° N, We received Headquarters' 

 radiogram directing the Seneca to return to New York upon being 

 relieved b}^ the Tampa, and also a radiogram from the Tampa 

 giving her noon position as lat. 43° 13' N., long. 58° 56' W. 



The patrol vessels met in lat. 42° 39' N., long. 52° 45' W., at 2.30 

 p. m., April 30, 1922, at which time the Tampa assumed the patrol 

 duties. 



From the date of assumption of the patrol duties, on April 16, to 

 the time the Tampa relieved the Seneca on May 1, the routine radio 

 reports were sent each day to the Hydrographic Office, New York, 

 and the prescribed ice warnings were broadcasted. In addition to 

 the 6 p. m. broadcast, an 11 a. m. broadcast was sent out during 

 foggy weather. As fog conditions prevailed from the 19th to the 

 27 th, no reports from vessels south of the 45th parallel were received, 

 and the Seneca was unable to search the area to the SW. of the Great 

 Bank, where bergs had been reported during the latter part of the 



