Summary of Operations, 1990 



The 1990 IIP year (Octo- 

 ber 1, 1989 - September 30, 

 1990) marked the 76th anni- 

 versary of the International Ice 

 Patrol, which was established 

 February 7, 1914. HP's op- 

 erating area is delineated by 

 40°N - 52°N, 39°W - 57°W 

 (Figure 1 ). During 1 990, Coast 

 Guard HC-130H aircraft 

 equipped with the AN/APS- 

 135 Side-Looking Airborne 

 Radar (SLAR) flew 30 ice re- 

 connaissance sorties, logging 

 over 186 flight hours, and 

 Coast Guard HU-25B aircraft 

 equipped with the AN/APS- 

 131 SLAR flew 23 recon- 

 naissance sorties, logging 

 over 70 flight hours. 



IIP personnel flew 

 aboard Canadian Ice Patrol 

 ice reconnaissance flights on 

 January 31 and February 26 



to determine the preseason 

 iceberg distribution. Based 

 on the latter deployment, the 

 1 990 IIP season was opened 

 on March 9. From this date 

 until August 7, 1 990, an aerial 

 Iceberg Reconnaissance De- 

 tachment (ICERECDET) op- 

 erated from Newfoundland 

 one week out of every two. 

 The season officially closed 

 on August 15, 1990. 



Watchstanders at HP's 

 Operations Center in Groton, 

 Connecticut analyzed the 

 iceberg sighting information 

 from the ICERECDETs, along 

 with sighting information from 

 commercial shipping and At- 

 mospheric Environment Ser- 

 vice (AES) of Canada sea ice/ 

 iceberg reconnaissance flights 

 and other sources. 



The IIP Operations 

 Center received a total of 

 3156 sightings within its op- 

 erations area (40°N - 52°N, 

 39°W - 57°W) and away from 

 the Newfoundland coast in 

 1990 which were entered into 

 MP's drift model. Forcompari- 

 son IIP received 2986 during 

 1989. These sightings are 

 broken down by type and sight- 

 ing source in Table 1. The 

 3156 sightings entered into 

 HP's drift model represented 

 only a fraction of the total 

 sightings reported to IIP. 

 Sightings of targets outside 

 MP's operations area or 

 grounded or in areas of little or 

 poorly defined current along 

 the Newfoundland coast were 

 not entered into the model. 



Table 1 shows that IIP 

 ICERECDETs and commer- 



Siahting Source 



Coast Guard (IIP) 

 Commercial Ship 

 Other Air Recon 

 DOD Sources 

 Canadian AES 

 BAPS 



Lighthouse/Shore 

 Other 



Total 



Table 1 

 Sightings entered into HP's Drift Model 



Percent 

 Growler Small Medium Large Radar Target Total of Total 



270 



140 



66 



5 



18 







2 







501 



295 



251 



218 



56 



62 



4 











887 



381 



661 



92 



86 



19 







7 







126 



175 



32 



23 



7 











1 



1246 364 



68 

 60 

 

 1 

 29 

 

 

 



158 



1140 



1287 



408 



171 



136 



4 



9 



1 



3156 



36.2 



40.8 



12.9 



5.4 



4,3 



.1 



.3 



.0 



100.0 



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