Percentage of Targets Entered 

 Into BAPS Model Out of 2632 



BAPS 

 27.2% 



Internalional 



Ice Patrol 



23 S-o 



Merchant 

 Ships 



National 



Ice Center 



1.0% 



Figure 4 Original sources of all targets merged 

 into BAPS model in 2000 



accounted for 27.2% of targets merged into 

 the BAPS model (Figure 4). These 

 transfers occur when targets cross the 

 demarcation line between IIP and CIS 

 operating areas at 52^N latitude. 

 Therefore, although the BAPS category 

 accounted for 27.2% of merged targets, it 

 did not represent any reports submitted to 

 IIP. The configuration of the BAPS model 

 makes determining the original sources for 

 targets of this type cumbersome. 

 Consequently, no attempt is made to 

 determine the original sighting source of 

 targets transferred to IIP in this manner. 

 The continued success and viability of the 

 International Ice Patrol depends heavily 

 upon all contributors of ice reports. 



During the 2000 season, IIP flew 

 fifty-four reconnaissance flights, detecting 

 1477 targets that were merged into BAPS. 

 Because IIP is mandated to determine the 

 limit of all known ice, IIP generally flies well 

 offshore in the vicinity of the 1000-m 

 bathymetric contour (Figure 1). The 

 different areas covered by Canadian flights 

 and IIP flights combine to form a 

 complementary system that achieves good 

 coverage of the entire Grand Banks area. 

 This system allows for more complete and 

 efficient coverage than either organization 

 could achieve separately. 



This combined system resulted in 

 IIP and the Canadian Government 

 detecting the majority of icebergs that set 

 the limit of all known ice. IIP detected 

 45.1% of LAKI icebergs and the Canadian 

 Government detected another 16.2% 

 (Figure 5). Although IIP detected nearly 

 half of the limit-setting icebergs due to the 

 location of its reconnaissance, IIP also 

 benefited significantly from the participation 

 of ships of opportunity and from HP's 

 partnership with the National Ice Center. 

 The merchant shipping industry was the 

 original source of 28.9% of LAKI icebergs 

 and NIC reported another 5.4%. The 

 BAPS model generated information that 

 accounted for 4.4% of LAKI icebergs. 



To compare ice years in a historical 

 perspective, IIP uses two different 

 measurements. The first is the season's 

 length in days (Figure 6). The second is 

 the number of icebergs south of 48'N 

 (Figure 7,8). This measurement includes 

 both icebergs detected south of 48'N and 

 those that were originally detected north of 

 48°N but were later predicted to have 

 drifted south of 48'N. The icebergs south 

 of 48°N measurement is generally 

 preferred by IIP because it places the 

 emphasis on icebergs that represent a 

 significant hazard to transatlantic shipping. 

 Additionally, the total number of targets 



Percentage of Limit Setting Icebergs 

 Out of 204 



international 



Ice Patrol 



, „ ^ 45.1% 



Merchant. 



Ships 



28.9% 



National Ice 



Center 



5.4% 



Canadian 



Government 



16.2% 



Figure 5. Original sources of limit- 

 setting icebergs in 2000. 



