Depthcontours
Depthcontours,alsoknownasbathymetriccontoursordepthcurvesarelinesdrawnoncartography
thatconnectpointsofequaldepthcreatingavisualizationofunderwaterbottomstructure
.Contours
usecolorfillstoindicatedepthinrelationtoothercontours.
Rastercharts
OnRasterchartsDepthcontoursarefixedandarealwaysdisplayed.
Vectorcharts
OnVectorchartsDepthcontourscanbecustomizedfromthe
Depthssettingsmenu: Menu>
Settings>Depths>Showcontours..
DepthcontoursincludeDepthsoundings.TheDepthcontoursoundingsaredifferentiatedfrom
otherDepthsoundingsbyusingawhiteoutline .
ThefollowingDepthcontouroptionsareavailable:
•None—NoDepthcontourlinesordepthcontoursoundingsaredisplayed.
•
Manual—Depthcontoursareonlyshownfromzerotothedepthspecifiedinthe Zeroto:option.
•All—AllDepthcontoursaredisplayed.
Note:
TheDepthcontoursoptiondoesnoteffectthecontourfillcolor .
ExampleLightHouse™ChartsDepthcontours
1.Shallowcontour—Depthsfromzerotothedepthspecifiedinthe Shallowcontoursettingwill
bewithintheShallowcontour,bydefaulttheShallowcontourusesthedarkestshadeofblue.
2.Safetycontour—Depthsfromthe Shallowcontourtothedepthspecifiedinthe Safetycontour
settingwillbewithintheSafetycontour.TheSafetycontourusesathickerlinethanother
contourlinesandiscoloredusingamediumshadeofblue.
Important:TheSafetycontourshouldbesettothesamevalueasyourvessel’ s Minimumsafe
depthandshouldbeusedtoidentifyareaswhereyoushouldnottak eyourvessel.
TheSafetycontourshouldbesettothesamevalueasyourvessel’s Minimumsafe
depthandshouldbeusedtoidentifyareaswhereyoushouldnottakeyourvessel.
3.Depthcontour—AllDepthcontoursconsistofalineanddepthsoundingsthatappearalong
theline.
4.Deepcontour—Depthsfromthe Safetycontourtothedepthspecifiedinthe Deepcontour
settingwillbewithintheDeepcontour,bydefaulttheDeepcontourusesthelightestshadeof
blue.BydefaultdepthsgreaterthantheDeepcontourwillbecoloredwhite.
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