INTERNATIONAL. ICE OBSERVATION AND ICE PATROL SERVICE. 21 



Tampa's April cruise. A menace was presented by the berg reported 

 by the Tanaford on April 17 in lat. 43° 35' N., long. 48° 00' W. If 

 this berg were in the Labrador Current, it would have set toward the 

 Tail of the Bank. Owing to the uncertainty of the movements of 

 these un traced bergs, the Seneca's broadcast zone was successively 

 swning around a fixed point at the intersection of the 43d parallel 

 and the 48th meridian* through the following positions: 



April 21, lat. 43° 30' N., long. 51° 00' W., then west to 53° 00' W. 



April 23, lat. 42° 20' N., long. 51° 00' W., then west to 53° 00' W. 



April 24, lat. 42° 20' N., long. 50° 00' W., then west to 53° 00' W. 



April 25, lat. 42° 20' N., long. 49° 00' W., then west to 53° 00' W. 



April 26, lat. 42° 10' N., long. 49° 00' W., then west to 53° 00' W. 



Special warnings and routings were given to the following steam- 

 ships on the dates specified: April 20, Winifredian and Canadian 

 Coaster; April 21, GiLstavholm; April 23, Litunia and Vellavia; April 24, 

 Wyncote, Cedric, and Homestead; April 26, Bothwell and Metagama. 



During the cruise, 670 water- temperature reports were received 

 from various steamships. 



The following steamships reported having sighted ice on the dates 

 specified: April 17, Tanaford; April 20, Cornishman; April 22, 

 Canadian Navigator and Canadian Hunter; April 23, Canadian Navi- 

 gator, Fontee, and Vellavia; April 25, Venusea, Wisley, and BothweU; 

 April 26, Edward Jeramae; April 28, Kaiserin Auguste, Minahrea, 

 and Metagama; April 29, Canadian Explorer, Dighy, Cassandra, and 

 Cairnross. The ice reported by these vessels, with exception of that 

 reported by the Tanaford on April 17, was on routes to the north of 

 the 45th parallel. 



Notices of the following obstructions were received and forwarded 

 to the Hydrographic OflB^ce, New York, from the steamships named 

 on the dates specified: Brittania, wreckage, April 16; Le Cog, buoy, 

 April 17; Atlantic Sun, buoy, April 18; Canadian Hunter, spar, 

 April 22; Maddequest, buoy, April 23; Carmania, buoy, April 23; 

 Anaconda, buoy, April 24; Victorio Emanuel III, wreckage, April 28; 

 Svrico, large tree stump, April 28. 



This cruise was disappointing, as no ice, except a small growler 

 and a few cakes, was observed. The Grand Banks and adjacent 

 waters were enveloped in fog, limiting the number of ice reports 

 from merchant steamers and mterfering with scouting by the patrol 

 vessel. Southerly winds prevailed from April 19 to April 28, veering 

 to the NW. on April 29. During this period, there was no day when 

 the visibility was fair or on which the fog whistle was not in use. 



Coast Guard Cutter "Tampa," Lieut. Commander W. J. Wheeler, 

 Ice Patrol, Second Cruise, April 30 to Mat 15, 1922. 



The Tampa left Halifax at 2.30 p. m., April 28, and set course to 

 pass 20 miles south of Sable Island, thence 102° true, until radio 

 communication was established with the Seneca. At 1.40 a. m., 

 April 30, lat. 42° 40' N., course was changed to E. true, for the pur- 

 pose of meeting the Seneca on this line. At 1.30 p. m., April 30, 

 sighted the Seneca ahead, and at 2 p. m. lay to while the Seneca 

 transferred the oceanographer and the scientific observer to the 

 Tampa. The Tampa then took over the ice patrol, lat. 42° 40' N., 

 long. 42° 50' W., and stood on an 82° true course for lat. 42° 50' 



