Raymarine A65 - Chart Application Overview and Core Features

13.13Usingradartotracktargetsand
avoidcollisions
TheGuardZone,VRM/EBLandMARPAfunctionswillhelpyou
tracktargetsandavoidcollisions.
Witharadarconnectedtoyourmultifunctiondisplay,youcan:
•Assesshowfarawayatargetisanditsbearing(VRM/EBL).
•Setanalarmtotriggerwhenatargetiswithinaspeciedzone
(GuardZone).
•Displaydetailedinformationontrackedtargets(MARPA).
•Displaytherangeandbearingofatarget.
Settinguparadarguardzone
Fromtheradarapplication:
1.SelectMenu.
2.SelectTrackTargets.
3.SelectGuardZoneSet-up.
4.SelectZonesothatOnishighlighted.
SelectingZonewillswitchthezoneOnandOff.
5.SelectAdjustZone.
6.SelectShape:toswitchbetweenSectororCircle.
7.SelectOuter:.
TheOuternumericadjustcontrolisdisplayed.
8.Adjusttheouteredgeoftheguardzonetotherequireddistance.
9.SelectOktoclosethenumericadjustcontrol.
10.SelectInner:.
TheInnernumericadjustcontrolisdisplayed.
11.Adjusttheinneredgeoftheguardzonetotherequireddistance.
12.SelectOktoclosethenumericadjustcontrol.
13.SelectWidth:.
TheWidthnumericadjustcontrolisdisplayed.
14.Adjustthewidthoftheguardzoneindegrees.
15.SelectOktoclosethenumericadjustcontrol.
16.SelectBearing:.
TheBearingnumericadjustcontrolisdisplayed.
17.Adjustthebearingoftheguardzoneindegreesportordegrees
starboard.
18.SelectOktoclosethenumericadjustcontrol.
Note:Guardzonewidthandbearingcanonlybeadjustedwhen
theShape:issettoSector.
Guardzonecontextmenu
Theguardzonefunctionincludesacontextmenuwhichprovides
additionalmenuitems.
Thecontextmenuprovidesthefollowingmenuitems:
•AcquireTarget.
•AdjustZone
•ZoneOff
Accessingthecontextmenu
Youcanaccessthecontextmenubyfollowingthestepsbelow.
1.NeweSeriesorNewcSeries:
i.Selectingalocation,objectortargeton-screenandpressing
theOkbutton.
2.Touchscreenmultifunctiondisplays:
i.Selectinganobjectortargeton-screen.
ii.Selectingandholdingonalocationon-screen.
Adjustingguardzonesensitivity
Youcanadjustthethresholdatwhichthealarmistriggeredbya
targetenteringtheguardzone.
1.SelectMenu.
2.SelectTrackTargets.
3.SelectGuardZoneSet-up.
4.SelectSensitivity.
Thesensitivitynumericadjustcontrolisdisplayed.
5.Adjustthesensitivitytotherequiredvalue.
6.SelectOktoconrmsettingandclosethenumericadjustcontrol.
Theguardzonesensitivitysettingcanalsobeaccessedfromthe
Alarmsmenu:homescreen>Set-up>Alarms>GuardZone
>Sensitivity.
MARPAoverview
MARPAisusedfortargettrackingandriskanalysisintheradar
application.
Withanaccurateheadingsensorconnectedtoyourmultifunction
display,youcanusetheMiniAutomaticRadarPlottingAid(MARPA)
functionsfortargettrackingandriskanalysis.MARPAimproves
collisionavoidancebycalculatinginformationfortrackedtargets,
andprovidescontinuous,accurate,andrapidsituationevaluation.
Thenumberoftargetsthatyoucantrackatanyonetimeis
dependentonthemodelofradarscannerthatyouareusing.
MARPAtracksacquiredtargets,andcalculatesthetarget'sspeed
andcourse.
Eachtargettrackedcanbedisplayedwithagraphicindicatingthe
ClosestPointofApproach(CPA),andTimetoClosestPointof
Approach(TCPA).Thecalculatedtargetdatacanalsobeshownon
yourscreen.Eachtargetiscontinuallyassessedandanaudible
alarmissoundedifatargetbecomesdangerous,orislost.
ForeffectiveMARPAoperation,yourmultifunctiondisplaymust
haveaccurateheadingandspeeddataforyourvessel.Thebetter
thequalityoftheheadingandspeeddata,thebetterMARPAwill
perform.Forthebestheadingdata,aRaymarineSMARTheading
sensororagyro-stabilizedautopilotisrequired.
InTrueMotionmode,SpeedOverGround(SOG)andCourseOver
Ground(COG)informationisrequiredtoshowtruetargetcourse
andspeed.
InRelativeMotionmode,headingandspeedinformationisrequired.
1
3
2 4
D12 21 9-1
ItemDescription
1
Safetarget
2Losttarget
3Dangeroustarget
4Targetbeingacquired
Safetynotices
MARPAcanimprovecollisionavoidancewhenusedwisely.Itis
yourresponsibilitytoexercisecommonprudenceandnavigational
judgement.
Thereareconditionswhereacquiringatargetmaybecomedifcult.
Thesesameconditionsmaybeafactorinsuccessfullytrackinga
target.Someoftheconditionsare:
156NewaSeries/NewcSeries/NeweSeries