Following is a summary of the water temperature, ice, and ob- 

 struction reports received during this cruise : 



Number of ice reports received _-_ 27 



Number of vessels furnishing ice reports ._ ,. 21 



Number of water temperature reports received - __ __ 329 



Number of vessels furnishing water temperature reports — — — . 91 



Number of obstruction reports received ._.. 5 



Number of vessels furnished special information 10 



The surface patrol vessel's ice scouting was supplemented during 

 this cruise by aerial ice observation flights as follows : On 14 June 

 one flight covered the area between longitudes 49° W., and 53° W., 

 from 41°30' N., to 43° N., west of the Tail of the Banks and to 

 43° 30' N., east of the Tail. Visibility was poor, but numerous radar 

 targets were picked up and all were investigated. All proved to be 

 ships. The following day a flight covered the adjacent triangle 

 eastward to 43° N., 46° W. Also on the 15th a search flight to the 

 northeastward from Argentia gave ice information to 30 miles on 

 either side of its course, from the Avalon Peninsula to the outer 

 limit of the iceberg belt. On 17 June two flights extended the area 

 scouted out on the 14th and 15th northeastward to a line from 

 45° N., 45° W., to 47° N., 50° W. 



Eighth Crv'ise, "Tampa," 17 June to I July, 1946 



At 1230 G. c. t. on 16 June 1946, the Tampa departed Argentia, 

 Newfoundland, for ice patrol. The Modoc was met at 45° 04' N,, 

 50° 17' W., and relieved as surface patrol vessel at 1215 G. c. t. on 

 17 June 1946. 



Weather experienced during the period of this cruise is here 

 summarized. Fog was present about 50 percent of the cruise for 

 a total of 161 hours and varied in intensity from moderate to 

 thick. Precipitation occurred in the form of light rain or drizzle. 

 There were approximately 25 hours of this type of precipitation. 

 The highest pressure recorded during this cruise was 1,030 milli- 

 bars which occurred on 22 June. The lowest pressure recorded 

 was on 27 June during the passage of a cyclonic disturbance of 

 mild proportions and was 1,004 millibars. During the storm period 

 the wind increased to approximately 40 knots, there was continuous 

 rain and a force 4 swell from the northwest. The winds were gen- 

 erally light, varying from 10 to 20 knots. Except for short periods 

 these winds were from south to west. 



At 1100 G. c. t. on 1 July 1946, the Modoc relieved the Tampa 

 as surface patrol vessel. The Tampa then set course for Argentia, 

 Newfoundland, arriving there on 2 July 1946. 



The following is a summary of water temperature, ice, and 

 obstruction reports received during this cruise : 



140 



