Raymarine LIGHTHOUSE 4 - Page 189

Important:
Y
oumuststillmaintainapermanentwatchfor:
•VesselsthatarenotequippedwithAISorAIS-equippedvesselsthat
arenotcurrentlytransmittingtheirposition,asthesetargetswillnotbe
displayedintheChartapplication.
•AIS-equippedvesselsreportinganinaccurateGPSposition,yourown
vessel’sGPSaccuracy,orAIStargetswithdelayedlocationupdates.
Thesesituationswillcauseyourvessel’spositionand/orAIStarget
positionstobedisplayedinaccuratelyintheChartapplication.
•ObjectsnotdetectedbyyourRadarscanner.
Predictedareasofdangersettings
ThePredictedareasofdangerfeaturecanbeenabledforAIStargetsand
R adartargetsintheChartapp.
[Chartapp>Menu>Targets>CollisionAvoidance]
Inthe[CollisionA voidance]menuyoucanchangethesettingstodetermine
whichtypesoftarget(i.e.AISandRadar)willhaveanInterceptionzone:
•[Radartargets]—EnablesanddisablesPredictedareaofdangergraphics
fordetectedRadartargets.
•[AIStargets]—EnablesanddisablesPredictedareaofdangergraphics
forAIStargets.
•[Showforthesetargets]—DetermineswhenPredictedareaofdanger
graphicsaredisplayed.Graphicscanbedisplayedfor:
–[Alltargets]—alltargetsonscreen.
–[T argetscrossingmycourse]—onlytargetswhicharepredictedtocross
yourvessel’spath
•[Distanceahead]—Changesthedistanceaheadofyourvesselthatthe
Interceptionlineisdrawn(onlyavailablewith[Targetscrossingmycourse]
selected).Thedistancecanbesettoavaluebetween0.5nmto5.0nm.
•[Hideareasforstatictargets]—EnablesanddisablesgraphicsforStatic
targets,targetstravellinglessthan2.0ktswillNOThavePredictedarea
ofdangerzones.
Collisionscenarios
Thereare3potentialscenariosthePredictedareasofdangerfeaturecan
warnyouabout:
•Ownvesselmovingfasterthantarget
•Targetmovingfasterthanownvessel
•Bothtargetsmovingatsimilarspeed
Examplescenario1—Ownvesselmovingfasterthantargetvessel
Note:Thesescenariosareexamplesprovidedforguidanceonly.
Chartapp-General
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