Raymarine LIGHTHOUSE 4 - Range Rings

[HARBOR]
Harbormodetak
esintoaccountlandclutter
thatistypicallyencounteredinaHarbor,so
thatsmallertargetsarestillvisible.Thismode
isusefulwhennavigatinginaHarbor.
[BUOY]
Buoymodeenhancesthedetectionofsmaller
targetssuchasmooringbuoys,andisuseful
atrangesupto3/4nm.
[COASTAL]
Coastalmodetakesintoaccountslightlyhigher
levelsofSeaclutterthatareencounteredout
ofHarborareas.Thismodeisusefulwhenin
openwaterbutkeepingtocoastalareas.
[OFFSHORE]
Offshoremodetakesintoaccounthighlevels
ofSeacluttersothattargetsarestillvisible,
usefulwhennavigatinginopenwateraway
fromthecoast.
[BIRD]
Birdmodeoptimizesthedisplaytohelpidentify
flocksofbirds,usefulwhentryingtolocatea
fishingarea.
[WEATHER]
Weathermodeoptimizesthedisplayto
helpidentifyprecipitation,usefulforhelping
determineweatherfronts.
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.7Rangerings
Rangeringsareevenlyspacedconcentriccirclesdisplayedonthescreen
thatarecenteredonyourvessel.Rangeringsenableyoutoeasilyestimate
thedistancebetweentwopointsontheRadarscreen.
Bydefaultrangeringsaresettoautomaticwiththenumberofrangerings
displayedandspacingbetweenthemdeterminedautomaticallybytheRadar
app’srange.
The[Rangeringmode]canbechangedto[Preferrednumber].When
preferrednumberisselectedyoucanspecifyyourpreferrednumberofrange
rings(i.e.:2,4,or6).Thenumberofpreferredringsincludestheazimuthring.
Note:
Duetotherelationshipbetweenrangeandringspacingitisnotalways
possibletodisplaythepreferrednumberatallranges.
RangeringsettingscanbeaccessedfromthePresentationtab:[Menu>
Presentation].
1.Rangeringdistance—eachrangeringincludesthedistancefromyour
vessel.
2.Azimuthring—Theazimuthringistheoutermostrangeringonthe
screenandisthefarthestcompleteringonthescreen.
3.Rangering—evenlyspacedconcentricrings.
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