22

ÜBottom TypeThe following indicates bottom types, asfound within C-MAP electronic charts:

CODE DEFINITION

Vol Ash Volcanic AshK KelpGrs GrassS Bk Sandbankw Whitebl Blackrd Redgn Greenb Bluey Yellowgy Greybr Brownch Chocolatelt Lightd Darkf finem mediumc coarsebk brokenst stickyso softsf stiffv volcanicca calcareoush hardComposite Abbreviations:fs Fine sandbkSh Broken shellsSSh Sand w/shellsBrM Brown mud

Sand Waves

Seabed Area, Rocky Area,Coral Reef

Spring in Seabed

M MudCy ClaySi SiltS SandSt StonesG GravelP PebblesCb CobblesR RockLv LavaCo CoralSh ShellsWd WeedGd GroundOz OozeMI MarlSn ShingleBo BouldersCk ChalkQz QuartzMd MadreporeBa BasaltPm PumiceCn CindersMn ManganeseOy OystersMs MusselsSp SpongeAl AlgaeFr ForaminiferaDi DiatomsCo Hd Coral Head

CODE DEFINITION

Weed / Kelp

Chart Legend

23

Chart LegendTank, Silo

Tower, MastWindmill, Windmotor

ÜTides, Currents

Landmarks, continued...

ÜWrecks, Obstructions

ÜDepths, Soundings

Breakers

Cable Area, SubmarinePipeline Area

Danger Line, General

Fish Haven

Obstruction

Offshore Platform

Depth Area With DepthContour Line (10 Ft.)Depth Line

Dredged AreaDrying Height Above ChartDatumIntertidal Area With LowWater Line

Unsurveyed Area

Current

Tide Height

Water Turbulence

Customs Office

Hospital, Health Office

Monument, Flagstaff

ÜPort ServicesBerth with Designation

Breakwater

Pier, Jetty

Rescue Station, PilotBoarding PlaceSignal Station, CoastGuard Station

ÜLandmarksBuildings

Chimney, Flare Stack

Church, Cemetery

Dish, Radar

Fortified Structure

Harbor Master’s Office

Post Office

Crane, Check Point

Distance Mark

Dolphin

Gates, LocksGroin (Dry, Intertidal,Underwater)

Piles

24

Chart Legend

ÜNavAidsBuoy And Beacon Topmarks

Sample Lighted Buoy withTopmark and RadarReflectorFog Signal

Lighted Offshore Platform

Light Float, Light Vessel

Light, Lighthouse

Multiple Colored Lights OnSame Structure

Anchoring Prohibited Area

Anchor Berth withSwinging Circle

Area To Be Avoided

Bird Sanctuary

Caution Area With WarningRE: Safe Navigation)

Diving Prohibited Area

Dumping Ground, General

Fishing Prohibited

Fish Trap Area

Marine Farm

Nature Reserve

Restricted Area

Wrecks & Obstructions, continued...

Anchor Berth, withDesignation

Remains of Wreck

Rock, Awash

Rock, Always Dry

Rock, Covers & Uncovers

Submarine CableSubmarine Pipeline, withDiffuser

Submerged WellheadSubmerged Wreck, Non-DangerousSubmerged Wreck,Dangerous

Wreck Area

Wreck showing Hull orSuperstructure

ÜTracks, RoutesFairway

Ferry Route

Precautionary Area

Recommended Track

Traffic Separation Scheme

ÜAttention AreasAnchorage Area

25

Isolated DangerMarks,International andU.S. Symbols

ÜCultural Features

Overhead Cable WithPylons

Overhead Pipeline

Safe WaterMarks,International andU.S. Symbols

Bridge

Radar ReflectorNavAids, continued...

Radar Station

Sector Light (SectorsDisplayed)

Sector Light (Sectors NotDisplayed)

Buoy Shapes:Nun, Can,Spherical, Pillar,Spar, Barrel,Superbuoy

Internationaland U.S.Symbols

Examples ofBeacons,International &U.S. Symbols

Lateral Marks:Lighted Buoys

Symbol: Direction ofBuoyage

Special Marks,U.S. LightedBuoys

C-Notes:

Chart Legend