Raymarine LIGHTHOUSE 4 - Collision Avoidance; Dangerous Targets Alarm; Predicted Areas of Danger

Thelengthofthevectoridentifieswherethetargetwillbeafterthetime
specifiedin[V
ectorperiod]haspassed.
11.10Collisionavoidance
Inadditiontotargettrackingspecificcollisionavoidancefeaturesare
availabletoimproveawarenessforthepotentialofcollisions.
Thespecificcollisionavoidancefeaturesare:
•Dangeroustargetsalarm.Referto:p.187—Dangeroustargetsalarm
•Radarguardzones.Referto:p.296—Guardzonealarms
•Predictedareasofdanger.Referto:p.187—Predictedareasofdanger
•LightHousechartobstructionalarm.Referto:
p.193—Obstructionalarm(legacyLightHousecharts)
Dangeroustargetsalarm
UsetheDangeroustargetsalarmtonotifyyouifaRadartargetorAIStarget
willreachaspecifieddistancefromyourvesselwithinaspecifiedtime.
TheDangeroustargetsalarmsettingscanbeaccessedfromthe[Collision
Avoidance]menu:[Menu>Targets>CollisionAvoidance].
T
osetuptheDangeroustargetsalarm,adjustthe[Safedistance]tothe
desiredvalueandthenselecta[Timetoreachsafedistance].Thealarmwill
betriggeredifatrackedtargetwillreachthespecifiedSafedistancefrom
yourvesselwithinthetimeperiodselected.
Thefollowingadditionaloptionsareavailableforthedangeroustargetsalarm:
•[Radartargets]—EnablesRadartargetstobeincludedinthedangerous
targetsalarm.IfthissettingisdisabledRadartargetswillnottriggerthe
dangeroustargetsalarm.
•[AIStargets]—EnablesAIStargetstobeincludedinthedangeroustargets
alarm.IfthissettingisdisabledAIStargetswillnottriggerthedangerous
targetsalarm.
•[DonotalarmforstaticAIStargets]—EnablesabilitytoignoreAIStargets
thatareconsideredstatic(travellingunder2Knots).Statictargetsthat
becomedangerouswillstillbeidentifiedonscreenbutwillnottriggerthe
dangeroustargetsalarm.
•[Showsafedistance]—Enablesdisplayofasafedistancecirclearound
yourvessel.
Predictedareasofdanger
ThePredictedareasofdangerfeaturetracksRadartargetsandAIStargets
inrelationtoyourownvessel’sCourseOverGround(COG)andSpeed
OverGround(SOG).
Ifyourpathsarepredictedtocross,anInterceptionlineisdisplayedbetween
yourvesselandthetarget.Additionally,Interceptionzonesaredisplayedto
indicatewherethereisanincreasedriskofcollision.TheInterceptionlineand
theInterceptionzonesarebasedonyourcurrentcourseandspeedandthe
target’scurrentcourseandspeed,andtheycanhelpyoudeterminewhether
youshouldchangecourseand/orspeedtoavoidapotentialcollision.
ThegraphicsautomaticallyrefreshwhentheMFDreceivesnewposition
datafromthetarget.
Chartapp-General
187