Patrol's AOR and entered into the CIS model, 

 which forwarded them to IIP once they drifted 

 south of 52°N. This BAPS configuration makes 

 it extremely difficult to determine the original 

 reporting source of a target transferred from the 

 CIS model and thus explains why Figures 2 and 

 3 do not account for targets transferred via 

 BAPS. Figure 4 provides a breakdown of 

 merged-target reporting sources. 



Figure 4. Reporting sources of the 2,862 individual 

 targets merged into BAPS in 2004. 



Traffic Service St. John's/VON were the 

 primary radio stations that transmitted ice 

 bulletins. Marine Communications and Traffic 

 Services St. Anthony/VCM transmitted 

 bulletins as well. In addition, ice bulletins and 

 safety broadcasts were delivered over the 

 Inmarsat-C SafetyNET via the Atlantic East 

 and West satellites. Moreover, IIP produced an 

 ice chart that depicted the 1200Z LAKI and 

 broadcast it daily at 1600Z and 1810Z. United 

 States Coast Guard Communications Area 

 Master Station Atlantic/NMF and the National 

 Weather Service assisted with the transmission 

 of the ice chart. On the eastern side of the 

 Atlantic, the German Federal Maritime and 

 Hydrographic Agency stations Hamburg/DDH 

 and Pinneberg/DDK transmitted IIP's ice chart, 

 which was also available via plain paper 

 facsimile and email on demand. Finally, both 

 the bulletin and chart were available on Ice 

 Patrol's website. 



LAKI Iceberg Sightings 



SOLAS mandates Ice Patrol to guard 

 the southeastern, southern, and southwestern 

 regions of the Grand Banks. In addition to 

 monitoring the icebergs that set the Limit of All 

 Known Ice, IIP uses most of its resources to 

 search for the most seaward icebergs. This year 

 IIP detected 53% of LAKI icebergs; but, 

 fortunately. Ice Patrol is not alone in the search 

 for limit-setting icebergs. Merchant ships 

 reported 25% of LAKI icebergs, and NIC 

 reported another 3%. Finally, BAPS model 

 transfers between IIP and CIS accounted for 

 18%, and other sources accounted for 1% of 

 LAKI icebergs (Figure 5). 



IIP Broadcasts/Products 



Throughout the iceberg season, IIP 

 produced two LAKIs a day (OOOOZ and 1200Z) 

 and distributed them by various means. United 

 States Coast Guard Communications Area 

 Master Station Atlantic/NMF and Canadian 

 Coast Guard Marine Communications and 



NIC 



BAPS 



Merchant 

 Vessels 



25% 



Figure 5. Initial reporting sources of LAKI-setting 

 icebergs during 2004. 



In 2004, Ice Patrol transmitted 184 

 scheduled ice bulletins via SafetyNET, all of 

 which reached the SafetyNET on time. The 

 timeliness, however, of ice-chart transmissions 

 was not quite as high as that of bulletins. Ice 

 Patrol produced 92 ice charts that were 

 transmitted twice a day (184 total 

 transmissions) via HE radio facsimile, made 

 available via email on demand, and posted on 

 the web. Of these 184 transmissions, 172 

 (93%) were delivered on time. Ice Patrol 

 considers an ice chart transmission late when 

 the radio frequency start tone begins more than 

 one minute later than the scheduled 



