16.7CollisionAvoidance
TheRadarandChartapplicationsincludefeatures
tohelpincreaseyourawarenessforthepotentialfor
collisions.
CollisionAvoidancefeaturesinclude:
AIS
Vesselsandaidsequipped
withAIStransmitters,thatare
withinrangecanbedisplayed
astargets.
RefertoChapter12AIS
(AutomaticIdentication
System)fordetails.
Chartand
Radar
applications
MARPA
MARPA(MiniAutomatic
RadarPlottingAid)improves
collisionawarenessby
trackingacquiredtargets
andcalculatingtheirspeed
andcoursetoenablerisk
analysis.
Referto16.8MARPA
overview
fordetails.
Chartand
Radar
applications
Target
Interception
TheTargetinterception
featuretracksAIStargetsin
relationtoyourownvessel’s
CourseOverGround(COG)
andSpeedOverGround
(SOG).Thepurposeof
thisfeatureistohelpyou
determineifyouneedto
changeyourspeedand/or
coursetoavoiddanger.
Referto12.9Collision
Avoidancefordetails.
Chart
application
GuardZone
Alarm
TheGuardZoneAlarmwill
warnyouifRadarreturnsare
detectedwithinthespecied
GuardZonelimits.
Referto16.11Settingupa
GuardZoneAlarm
fordetails.
Radar
application
Dangerous
targets
AISandacquiredMARPA
targetsareconsidered
dangerousifthetargetwill
getclosertoyourvesselthan
thespeciedSafeDistance
withinthespeciedTimeto
SafeDistance.
Referto12.8Dangerous
targetsfordetails.
Chartand
Radar
applications
VRM/EBLTheVRM/EBLfeaturecanbe
usedtoassesshowfaraway
anacquiredMARPAtargetis
anditsbearing.
Referto16.14Distances,
range,andbearing
fordetails.
Radar
application
Trails
Trails(alsoknownaswakes)
showahistoryofthetargets
positionoveraspeciedtime
period.
Referto16.12Trailsfor
details.
Radar
application
234
LightHouseMFDoperationinstructions