16.12Trails
RadarTrails(alsoknownaswakes)enableyou
toseetargethistory.Trailswillappeardifferently
dependingonwhetheryourRadarissettoTrue
motionorRelativemotionmode.
Relativemotionmode
Inrelativemotionmodetrailsappearontargetsthat
aremovingrelativetothesea(Seastabilized)this
includestargetsthatarexedtotheground,such
aspiles.
Trailswillnotappearifatargetismovingatthesame
speedandinthesamedirectionasyourvessel.
Relativemotionmodeexample
ETETETETETETETETETETETETETETETEMPM
RORORORORORORORORORORORORORO
ARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARARAT
1
Targetmovingfasterandinthesamedirectionas
vessel(Trailsappeartowardsyourvessel’sheading)
2
Shipsheadingmarker
3
Targetmovinginoppositedirectiontovessel(Trails
appearoppositetoyourvessel’sheading)
4Targetmovingatapproximatelythesamespeed
anddirectionasvessel(Minimaltonotrails)
5
Fixedtarget(Trialinoppositedirectiontoyour
vessel’sheading)
Truemotionmode
Intruemotionmoderadartrailsappearontargets
thataremovingrelativetotheground.
trailswillnotappearontargetsthatarexedtothe
ground.
Truemotionmodeexample
PMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMPMP O
RORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORORA
1
Shipsheadingmarker
2
Targettravellingatbetween0ktto1kt(Minimalto
notrail)
3Targetmovinginoppositedirectiontovessel
(Trailsappearinoppositedirectiontoyourvessel’s
heading)
4
Targetmovinginsamedirectionasvessel(Trials
appeartowardsyourvessel’sheading)
Note:YoumayseeaTrail‘ring’aroundxed
targetsduetosmallerrorfactorssuchasrotation
timedelays.Thisisnormaloperation.
EnablingTrails
FromtheRadarapplication’sCollisionAvoidance
menu:(Menu>CollisionAvoidance)
1.SelectTrailssothatOnishighlighted.
SelectingTrailswillswitchthefunctionbetween
OnandOff.
2.SelectTrailsperiod.
Alistoftimeperiodsisdisplayed:
•10sec
•30sec
•1min
•5min
•10min
3.Selecttherequiredtimeperiod.
238
LightHouseMFDoperationinstructions