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1、MAINHEADLONGRANGESHIPTRACKINGDECKHEADWetakealookattheincomingrequirementforlongrangeshiptracking,howitmightworkandthedifferenttechnologieswhichmightbeusedBODYShipsareverylarge,anditisveryhardtohidethelocationofthem,whentheyturnupinaport.Butshippingcompaniesdoma
2、nagetokeeptheirdestinationsandcurrentlocationssecretwhentheyareoutontheopenocean.Shippingindustryexecutivesaroundtheworldhavelongbeenoftheopinionthatthelessinformationtheyhavetorevealabouttheiractivitiesthebetter.Butthereareplentyofpeoplewhowouldliketohavethisi
3、nformation,particularlygovernmentsofcountriesaroundtheworldwhoareconcernedthattheycouldhaveshipsneartheircoastlinesunderthecontrolofterrorists.TheInternationalMaritimeOrganisationhasalreadymentionedthepossibilityofmandatorylongrangetrackingforallvessels,maybeby
4、assoonas2006;thisisalsobeingpushedbytheEuropeanCommission.TheUSCoastguardisunderstoodtobeseekingmandatorytrackingsoonerthanthat.LongrangetrackinghasseveraladvantagesoverAIS,whichwasoriginallyconceivedasacollisionavoidancesystembutisnowalsobeingconsideredasasecu
5、ritydevice,continuouslybroadcastingunencrypteddataabouttheshipwhichcanbereceivedinarangeofabout30to300miles.SUBHEADLongrangetrackingandAISShiplocationsgeneratedbylongrangetrackingsystemscanbemadeavailabletoregulatoryauthoritieswithoutmakingthempublic,ascompared
6、toAISdatawhichiscompletelypublic.Therehavebeenconcernsthataterroristwithinformationabouttheprecisegeographicco-ordinatesofashipcouldlaunchamissileatitfromsomedistanceaway;AISwouldgivethisinformationaway,butlongrangetrackingwouldn’t.Longrangetrackingsystemscante
7、llauthoritiesaboutallshipswhicharedaysawayfromtheircoastlines,asopposedtoAIS,whichonlyhasarangeof30milesinnormalweather.So,forexample,theUSmilitaryauthoritiescanknowabouteverysinglevesselremotelyheadingtowardstheUS,crosscheckitagainstspysatellitepicturesandTher
8、eisstilltheissueof–ifaterroristwasincontrolofaship,andithadnolongrangetracking,thenassumingthatitwasnotpickedupbyspysatellites(whicharenotcontinuallycheckingtheoceansasfaras
