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NOAA Chart no1


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Symbols found on marine charts

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NOAA Chart no1

  1. 1. Chart No. 1UNITED STATES OF AMERICANautical Chart Symbols, Abbreviations and TermsEleventh Edition November 2011
  2. 2. Chart No.1United States of AmericaNautical Chart Symbols,Abbreviations and TermsEleventh EditionNovember 2011Prepared jointly by:U.S. Department of CommerceNational Oceanic and Atmospheric AdministrationNational Ocean ServiceWashington, DCU.S. Department of DefenseNational Geospatial-Intelligence AgencySpringfield, VAChanges to this edition will be published by the National Geospatial-Intelligence Agency (NGA)in the Notice to Mariners.These changes are also available on the Internet at
  3. 3. Record of CorrectionsSupplement No. Notice No. Corrected On Corrected by 2
  4. 4. SYMBOLS ABBREVIATIONS TERMS CONTENTSINTRODUCTION AND SCHEMATIC LAYOUTGENERALA Chart Number, Title and Marginal NotesB Positions, Distances, Directions and CompassTOPOGRAPHYC Natural FeaturesD Cultural FeaturesE LandmarksF PortsG Topographic TermsHYDROGRAPHYH Tides and CurrentsI DepthsJ Nature of the SeabedK Rocks, Wrecks and ObstructionsL Offshore InstallationsM Tracks and RoutesN Areas and LimitsO Hydrographic TermsNAVIGATION AIDS AND SERVICESP LightsQ Buoys and BeaconsR Fog SignalsS Radar, Radio and Satellite Navigation SystemsT ServicesU Small Craft (Leisure) FacilitiesINDEXESV Index of AbbreviationsW International AbbreviationsX IndexAPPENDIX1 IALA 3
  5. 5. INTRODUCTIONPurpose - The 11th edition of U. S. Chart No. 1, Nautical Chart Symbols, Abbreviations and Terms presents thesymbols depicted on paper nautical charts produced by the National Oceanic and Atmospheric Administration(NOAA) and the National Geospatial-Intelligence Agency (NGA), as well as digital raster representations of thosecharts, such as Raster Nautical Charts (RNC®). This document also shows the symbols described in theRegulations of the IHO for International (INT) Charts and Chart Specifications of the IHO published by theInternational Hydrographic Organization (IHO), which are portrayed in the three official language versions ofInternational Chart 1 (INT 1).Electronic Charts - The symbols and abbreviations displayed on navigation systems portraying NOAA-producedElectronic Navigational Charts (NOAA ENC®) or NGA-produced Digital Nautical Charts (DNC®) are quite similar tothose used on paper charts for some features, but different for others. This document is not intended as a referencefor the use of these vector-based products.Change in Column Order - Previous editions of U.S. Chart No. 1 showed U.S. symbology on the left side of thepage and INT 1 symbology in the second column from the right. This edition of Chart No. 1 has reversed the order.INT 1 symbols now appear in the second column from the left, after the symbol number. Any variations from INT 1symbology that are used on charts produced by NOAA or NGA are shown in the NOAA, NGA and the “NGAreproduction of foreign charts” columns (columns 4, 5, and 6 respectively). When columns 4 and 5 are combined, this indicates that NOAA and NGA use the same symbol for that particularfeature. When any of columns 4, 5, or 6 are blank, then the INT 1 symbol has been adopted for use by theorganization for which that column applies. The schematic layout following this introduction shows a typical symboltable page and describes the table headers and the types of information presented in each of the columns.Sample Chart Layouts – Section A presents two schematics showing typical layouts of the major elements ofNOAA and NGA charts.Soundings - The sounding datum reference is stated in the chart title. Soundings on NOAA and NGA charts may beshown in fathoms, feet, fathoms and feet, fathoms and fractions, or meters and decimeters. In all cases the unit ofdepth used is shown in the chart title and outside the border of the chart in bold type. (See item Ab in Section A.)Heights - Heights of lights, landmarks, structures, etc. refer to the shoreline plane of reference. The unit of height isshown in the chart title. When the elevations of islets or bare rocks are offset into the adjacent water, they are shownin parentheses.Drying Heights - For rocks and banks that cover and uncover, elevations are underlined and are referenced to thesounding datum as stated in the chart title. When the heights of rocks that cover and uncover are offset into theadjacent water, they are shown in parentheses.Shoreline - Shoreline shown on charts represents the line of contact between the land and a selected waterelevation. In areas affected by tidal fluctuation, this line of contact is usually the mean high-water line. In confinedcoastal waters of diminished tidal influence, a mean water level may be used. The shoreline of interior waters(rivers, lakes) is usually a line representing a specified elevation above a selected datum. Shoreline is symbolizedby a heavy line (symbol C1). Apparent shoreline is depicted on charts to show the outer edge of marine vegetationwhere the shoreline limit would be expected to appear to the observer, or where it prevents the shoreline from beingclearly defined. Apparent shoreline is symbolized by a lighter line (symbols C32, C33, Ca, Cq and Cr). 4
  6. 6. Landmarks - A structure or a conspicuous feature on a structure may be shown by a landmark symbol with adescriptive label (see Section E). Prominent buildings that could assist the navigator may be shown by actual shapeas viewed from above (see Sections D and E). On NGA charts, a landmark legend that is shown in capital lettersindicates that the landmark is conspicuous; the landmark may also be labeled “CONSPICUOUS” or “CONSPIC.” OnNOAA charts, all landmarks are considered to be conspicuous, and landmark legends shown in all capital lettersindicate the landmark has been positioned accurately; legends using both upper and lower case letters indicate anapproximate position.IALA Buoyage System - The International Association of Marine Aids to Navigation and Lighthouse Authorities(IALA) Maritime Buoyage System is followed by most of the world’s maritime nations; however systems used insome foreign waters may be different. IALA buoyage is divided into two regions: Region A and Region B. Allnavigable waters of the United States follow IALA Region B rules, except U.S. possessions west of the InternationalDate Line and south of 10° north latitude, which follow IALA Region A. The major difference in the two buoyage Regions is the color of the lateral marks. Region A uses red-to-portmarks and Region B uses red-to-starboard marks when entering from seaward. The shapes of lateral marks,however, are the same in both Regions: can to port and cone (nun) to starboard, when entering from seaward.Cardinal and other marks, such as isolated danger marks, safe water marks, and special marks are also the same inboth Regions. Section Q and Appendix 1 illustrate the IALA Buoyage System for both Regions A and B.U.S. Lateral Marks - Most of U.S. waters lie withing IALA Region B. In the U.S. system, on entering a channel fromseaward, buoys and beacon dayboards on the starboard side are red with even numbers and have red lights, if lit.Buoys and beacon dayboards on the port side are green with odd numbers and have green lights, if lit. Preferredchannel buoys have red and green horizontal bands with the top band color indicating the preferred side of passage.Light Range (Visibility) - A light’s range or visibility is given in nautical miles, except on the Great Lakes andadjacent waterways, where light ranges are given in statute miles. For lights having more than one color, NOAAcharts give only the shortest range of all the colors. On NGA charts, multiple ranges may be shown using thefollowing convention. For lights with two colors, the first number indicates the range of the first color and the secondnumber indicates the range of the second color. For example, Fl WG 12/8M indicates that the range of the white lightis 12 nautical miles and the range of green light is 8 nautical miles. For lights with three colors, only the longest andshortest ranges are given. For example, Fl WRG 12-8M indicates that the range of the white light is 12 nautical miles,the range of green light is 8 nautical miles, and the range of the red light is somewhere between 8 and 12 nauticalmiles..Positioning of Aids to Navigation - The fixed and floating aids to navigation depicted on charts have varyingdegrees of reliability. Floating aids are moored to sinkers by varying lengths of chain and may shift due to seaconditions and other causes. Buoys may also be carried away, capsized or sunk. Lighted buoys may beextinguished and sound signals may not function, because of ice or other causes. Therefore, prudent mariners willnot rely solely on any single aid to navigation, particularly on floating aids, but will also use bearings from fixedobjects and aids to navigation on shore. 5
  7. 7. Colors - Color conveys the nature and importance of features found on nautical charts. Chart elements significant tomarine navigation, such as lights, compass roses and regulated areas, are emphasized with magenta. Lateralmarks on NOAA charts are shown with a red or green fill. Shades of blue depict potential hazards to navigation,typically shallow water and submerged obstructions. Areas of deeper water believed to be clear of obstructions areshown as white. Land, and other features that are always dry, are depicted with buff on NOAA charts and gray onNGA charts. Foreshore and other intertidal features are portrayed with a green tint. Other colors may be used toprovide additional information, such as protected areas, which are outlined in blue or green and mineral leaseblocks, which are outlined in red.Traffic Separation Schemes - Traffic separation schemes show recommended vessel traffic lanes to increasesafety of navigation, particularly in areas of high-density shipping. These schemes are described in the InternationalMaritime Organization (IMO) publication Ships’ Routeing. Traffic separation schemes are generally shown onnautical charts at scales of 1:600,000 and larger. When possible, traffic separation schemes are plotted to scale andshown as depicted in Section M.Conversion Scales - Depth conversion scales are provided on all charts to enable the user to work in meters,fathoms or feet.Correction Date - The date of each new chart edition is shown below the lower left border of the chart. The date ofthe latest NGA-issued U.S. Notice to Mariners applied to the chart is shown after the edition date. NOAA chartsinclude the date of the latest U.S. Coast Guard Local Notice to Mariners applied to the chart.Additional Resources - Information about the use of nautical charts, aids to navigation, sounding datum, and thegeneral practice of navigation can be found in The American Practical Navigator, available via the “Publications”hyperlink at Tide and tidal current data in U.S. waters is available from the NOAA Center for Operational OceanographicProducts and Services at Detailed information about specific lights, buoys, and beacons located in United States waters, and generalinformation about the U.S. Aids to Navigation System and the Uniform State Waterway Marking Systems ispublished in the U.S. Coast Guard Light List, available at about lighted and radio aids to navigation located in waters outside of the United States is published inthe NGA List of Lights, available via the “Publications” hyperlink at Other important information that cannot be shown conveniently on nautical charts can be found in the NOAA U.S.Coast Pilot® publications, available at, or in the NGASailing Directions publications, available via the “Publications” hyperlink at Nautical Chart Catalogs and Indexes - These catalogs list nautical charts, auxiliary maps, and relatedpublications. They include general information relative to the use and ordering of nautical products. NOAA catalogsare available at NGA product catalog entries are availableas a searchable database via the “Product Catalog” hyperlink at 6
  8. 8. Corrections and Comments - Notices of corrections to this publication are published in the U.S. Notice toMariners, available via the “Notice to Mariners” hyperlink at Users should refer corrections, additions and comments to the Worldwide Navigational Warning Service 24-hourWatch Desk, toll free: 1-800-362-6289, commercial: 571-547-5455, DSN: 547-5455, e-mail:, or by mail to: Maritime Safety Office Mail Stop N64-SH National Geospatial-Intelligence Agency 7500 GEOINT Drive Springfield, VA 22150-7500 7
  9. 9. Schematic Layout of Chart No.1: Section Section designation Sub-section Reference to “Supplementary national symbols” at the end of each section Cross-reference to terms in other sections Column 1: Numbering system following the “Chart Specification of the IHO”. A letter in this column indicates a supplementary national symbol or abbreviation for which there is no international equivalent Column 2: Representation of symbols that follow the “Chart Specifications of the IHO” Column 3: Description of symbols, term, or abbreviation Column 4: Representation used on charts produced by the National Ocean Service (NOS), if different from column 2. In certain instances, the representation is clarified by a label on the chart Column 5: Representation used on charts produced by National Geospatial-Intelligence Agency (NGA) Note: When NOS and NGA symbols are identical, their columns are combined Column 6: Representation of symbols that may appear on NGA reproductions of foreign charts 8
  10. 10. A Chart Number, Title and Marginal NotesMagnetic Features  B Tidal Data  H Satellite Navigation Systems  S Chart number in national chart series Chart number in International (INT) chart series Chart datum 9
  11. 11. A Chart Number, Title and Marginal Notes Publication note (imprint) Copyright note Edition note Notice to Mariners corrections Dimensions of inner borders Corner coordinates Chart title Explanatory notes on chart construction, etc. To be read before using chart Seal(s) Scale of chart. Some charts have scale at a stated latitude Linear scale on large-scale charts Linear border scale on large-scale charts. On smaller scales use latitude borders for sea miles Cautionary notes (if any), Information on particular features, to be read before using chart Source Diagram (if any). The source Diagram should be studied before using the chart in order to assess the reliability of the sources. Navigators should be cautious where surveys are inadequate Reference to a larger-scale chart Reference to an adjoining chart of similar scale Instruction to refer to complementary nautical publications Conversion Scales. Reference to the units used for depth measurement Compass Rose Bar code and stock number Glossary: Translation of words on chart that are not in English Identification of a latticed chart (if any) Tidal and Tidal Stream information within the chart coverage 10
  12. 12. A Chart Number, Title and Marginal NotesMagnetic Features  B Tidal Data  H Satellite Navigation Systems  S Chart number in national chart series Chart number in International (INT) chart series Chart datum 11
  13. 13. A Chart Number, Title and Marginal Notes Publication note (imprint) Copyright note Edition note Notice to Mariners corrections Dimensions of inner borders Corner coordinates Chart title Explanatory notes on chart construction, etc. To be read before using chart Seal(s) Scale of chart. Some charts have scale at a stated latitude Linear scale on large-scale charts Linear border scale on large-scale charts. On smaller scales use latitude borders for sea miles Cautionary notes (if any), Information on particular features, to be read before using chart Source Diagram (if any). The source Diagram should be studied before using the chart in order to assess the reliability of the sources. Navigators should be cautious where surveys are inadequate Reference to a larger-scale chart Reference to an adjoining chart of similar scale Instruction to refer to complementary nautical publications Conversion Scales. Reference to the units used for depth measurement Compass Rose Bar code and stock number Glossary: Translation of words on chart that are not in English Identification of a latticed chart (if any) Tidal and Tidal Stream information within the chart coverage 12
  14. 14. B Positions, Distances, Directions and CompassGeographical Positions 1 Lat Latitude 2 Long Longitude International Meridian 3 (Greenwich) 4 Degree(s) 5 Minute(s) of arc 6 Second(s) of arc 7 PA Position approximate PA (PA) 8 PD Position doubtful PD (PD) 9 N North10 E East11 S South12 W West13 NE Northeast14 SE Southeast15 NW Northwest16 SW SouthwestControl Points20 Triangulation point21 Observation spot22 Fixed point23 Benchmark24 Boundary mark Distance along waterway, no25.1 visible marker Distance along waterway, with25.2 visible markerSymbolized Positions (Examples) Symbols in plan: position is30 center of primary symbol 13
  15. 15. B Positions, Distances, Directions and Compass Symbols in profile: position is at31 bottom of symbol Point symbols: accurate32 positions33 Approximate positionUnits Supplementary national symbols: a – m40 km Kilometer(s)41 m Meter(s)42 dm Decimeter(s)43 cm Centimeter(s)44 mm Millimeter(s)45 M International nautical mile(s) or, Mi NMi NM sea mile(s) (1852m)46 Cable (0.1M) cbl47 ft Foot/Feet48 Fathom(s) fm49 h Hour hr50 m min Minute(s) of time51 s sec Second(s) of time52 kn Knot(s)53 t Tonne(s), Ton(s) Tonnage (weight)54 cd CandelaMagnetic Compass Supplementary national symbols: n60 Variation var VAR61 Magnetic mag62 Bearing brg63 True T64 Decreasing65 Increasing66 Annual change67 Deviation dev 14
  16. 16. B Positions, Distances, Directions and Compass Note of magnetic variation, in68.1 position Note of magnetic variation, out of68.2 position Compass rose, normal pattern (smaller patterns of compass rose may be used) Magnetic variation (example): on magnetic north arrow VAR 4o15’W (2011) means Magnetic Variation was 4o15’W in 2011 ANNUAL CHANGE 8’W means annual change is 8’E or decreasing 8’ annually70 15
  17. 17. B Positions, Distances, Directions and Compass71 Isogonic lines, Isogonals Local magnetic anomaly: Within the enclosed area the82.1 magnetic variation may deviate from the normal by the value shown Local magnetic anomaly: Where the area affected82.2 cannot be easily defined, a legend only is shown at the positionSupplementary National Symbols a Square meter b Cubic meter c Inch(es) in d Yard(s) yd e Statute mile St M St Mi f Microsecond(s) g Hertz Hz h Kilohertz kHz i Megahertz MHz j Cycles/second cps c/s k Kilocycle kc l Megacycle Mc m Ton(s) (U.S. short ton) (2,000lbs) T n Degree(s) deg 16
  18. 18. C Natural FeaturesCoastline Supplementary national symbols: a – d, p – tForeshore  I, J1 Coastline, surveyed2 Coastline, unsurveyed Cliffs, Steep coast, Steep coast3 with rock cliffs4 Hillocks5 Flat coast6 Sandy shore7 Stony shore, Shingly shore8 Sandhills, Dunes 17
  19. 19. C Natural FeaturesRelief Supplementary national symbols: e – gPlane of reference for heights  H Contour lines with values and10 spot height11 Spot heights Approximate contour lines with12 values and approximate height13 Form lines with spot height Approximate height of top of14 trees (above height datum)Water Features, Lava Supplementary national symbols: h20 River, Stream21 Intermittent river22 Rapids, Waterfalls23 Lakes24 Salt pans 18
  20. 20. C Natural Features25 Glacier26 Lava flowVegetation Supplementary national symbols: i - o30 Woods in general31 Prominent trees (isolated or in groups)31.1 Deciduous tree31.2 Evergreen (except conifer)31.3 Conifer31.4 Palm31.5 Nipa Palm31.6 Casuarina31.7 Filao31.8 Eucalypt32 Mangrove33 Marsh, Swamp, Reed beds 19
  21. 21. C Natural FeaturesSupplementary National Symbols Chart sounding datum linea (surveyed) Approximate sounding datum lineb (inadequately surveyed) Foreshore; Strand (in general)c Stones; Shingle; Gravel; Mud; Sandd Breakers along a shoree Rubblef Hachuresg Shadingh Lagooni Deciduous woodland 20
  22. 22. C Natural Featuresj Coniferous woodlandk Tree plantationl Cultivated fieldsm Grassfieldsn Paddy (rice) fieldso Bushesp Apparent Shoreline Vegetation or topographicq (Feature Area Limit- in general)r Cypresss Grasst Eelgrass 21
  23. 23. D Cultural FeaturesSettlements, BuildingsHeight of objects  E Landmarks  E1 Urban area Settlement with scattered2 buildings Settlement (on medium and3 small-scale charts)4 Village5 Buildings Important building in built-up6 area7 Street name, Road name8 Ruin, Ruined landmarkRoads, Railways, Airfield Supplementary National Symbols: a – c10 Motorway11 Road (hard surfaced) Track, Path (loose or12 unsurfaced) 22
  24. 24. D Cultural Features13 Railway, with station14 Cutting15 Embankment16 Tunnel17 Airport, AirfieldOther Cultural Features Supplementary National Symbols: d - i Vertical clearance above High20 Water21 Horizontal clearance Fixed bridge with vertical22 clearance Opening bridge (in general) with23.1 vertical clearance Swing bridge with vertical23.2 clearance Lifting bridge with vertical23.3 clearance (closed and open) 23
  25. 25. D Cultural Features Bascule bridge with vertical23.4 clearance23.5 Pontoon bridge Draw bridge with vertical23.6 clearance Transporter bridge, with vertical24 clearance below fixed structure Overhead transporter, Aerial25 cableway with vertical clearance Overhead power cable with pylons and safe vertical clearance26 Note: The safe vertical clearance above the height datum as defined by the responsible authority is given in magenta where known; otherwise the physical vertical clearance is shown in black, as in D 20, for the lowest wires (also see diagram at H 20) Overhead cable, Telephone line,27 Telegraph line with vertical clearance Overhead pipe with vertical28 clearance29 Pipeline on land 24
  26. 26. D Cultural FeaturesSupplementary National Symbolsa Highway markers Railway (Ry)b (single or double track) Railroad (RR)c Abandoned railroadd Bridge under constructione Footbridgef Viaductg Fenceh Power transmission linei Approximate vertical clearance 25
  27. 27. E LandmarksPlane of reference for Height  H Lighthouses  P Beacons  QGeneral 1 Examples of landmarks Examples of conspicuous landmarks (On NOAA charts, a large circle with dot and capitals 2 indicate that position is accurate, small circle and lowercase indicates position is approximate) Pictorial sketches (in true3.1 position) Pictorial sketches (out of3.2 position) Height of top of a structure 4 above height datum Height of structure above ground 5 levelLandmarks10.1 Church10.2 Church tower10.3 Church spire10.4 Church cupola11 Chapel12 Cross, Calvary13 Temple14 Pagoda15 Shinto shrine, Joss house16 Buddhist temple or shrine 26
  28. 28. E Landmarks17 Mosque, Minaret18 Marabout19 Cemetery20 Tower Water tower, Water tank on a21 tower22 Chimney23 Flare stack (on land) Monument (including column,24 pillar, obelisk, statue)25.1 Windmill25.2 Windmill (without sails)26.1 Wind turbine, Windmotor26.2 Wind farm27 Flagstaff, Flagpole28 Radio mast, Television mast29 Radio tower, Television tower30.1 Radar mast30.2 Radar tower30.3 Radar scanner 27
  29. 29. E Landmarks30.4 Radar dome31 Dish aerial32 Tanks33 Silo Fortified structure (on large-scale34.1 charts) Castle, Fort, Blockhouse (on34.2 smaller-scale charts) Battery, Small fort (on smaller-34.3 scale charts)35.1 Quarry (on large-scale charts)35.2 Quarry (on smaller-scale charts)36 Mine37.1 Recreational vehicle site Camping site (including37.2 recreational vehicles)Supplementary National Symbols a Muslim shrine b Tomb c Watermill d Factory e Well f School g Hospital 28
  30. 30. E Landmarksh Universityi Gable Telegraph Telk Telegraph office Tel Offl Magazine Magzm Government house Govt Hon Institute Insto Courthouse Ct Hop Pavilion Pavq Telephone Tr Limited Ltds Apartment Aptt Capitol Capu Company Cov Corporation Corp 29
  31. 31. F PortsProtection Structures Supplementary national symbols: a – c1 Dyke, Levee, Berm Seawall (on large-scale2.1 charts) Seawall (on smaller-scale2.2 charts)3 Causeway4.1 Breakwater (in general) Breakwater (loose boulders,4.2 tetrapods, etc.) Breakwater (slope of concrete4.3 or masonry) Training wall (partly5 submerged at high water) 30
  32. 32. F Ports6.1 Groin (always dry)6.2 Groin (intertidal)6.3 Groin (always under water)Harbor InstallationsDepths  I Anchorages, Limits  N Beacons and other fixed marks  Q Marina  U10 Fishing harbor11.1 Boat harbor, Marina11.2 Yacht berths without facilities11.3 Yacht club, Sailing club12 Mole (with berthing facility)13 Quay, Wharf14 Pier, Jetty15 Promenade pier16 Pontoon17 Landing for boats18 Steps, Landing stairs 31
  33. 33. F Ports19.1 Designation of berth19.2 Visitors’ berth20 Dolphin21 Deviation dolphin22 Minor post or pile23 Slipway, Patent slip, Ramp24 Gridiron, Scrubbing grid25 Dry dock, Graving dock26 Floating dock27 Non-tidal basin, Wet dock28 Tidal basin, Tidal harbor Floating barrier, e.g. oil29.1 barrier, security barrier 32
  34. 34. F Ports Oil retention barrier (high29.2 pressure pipe)30 Works on land, with year date Works at sea, Area under31 reclamation, with year date Under construction (2009) Works under construction,32 with year date Works in progress (2009)33.1 Ruin Ruined pier, partly submerged33.2 at high water34 HulkCanals, Barrages Supplementary national symbol: dClearances  D Signal Stations  T Distance Marks  B40 Canal41.1 Lock (on large-scale charts)41.2 Lock (on smaller-scale charts)42 Caisson, Gate43 Flood barrage44 Dam, Weir (direction of flow) 33
  35. 35. F PortsTranshipment Facilities Supplementary national symbols: gRoads  D Railways  D Tanks  E Roll-on, Roll-off (RoRo) Ferry50 Terminal Transit shed, Warehouse51 (with designation)52 Timber yard Crane with lifting capacity,53.1 Traveling crane (on railway) Container crane (with lifting53.2 capacity)53.3 Sheerlegs (conspicuous)Public Buildings Supplementary national symbol: e – f60 Harbormaster’s office61 Custom office Health office, Quarantine62.1 building62.2 Hospital63 Post office 34
  36. 36. F PortsSupplementary National Symbolsa Jetty (partly below MHW)b Submerged jettyc Jetty (on smaller-scale charts)d Mooring Canale Quarantine officef Pump-out facilitiesg Conveyor 35
  37. 37. G Topographic TermsCoast1 Island 8 Head, Headland2 Islet 9 Point3 Cay 10 Spit4 Peninsula 11 Rock5 Archipelago 12 Salt marsh, Saltings6 Atoll 13 Lagoon7 CapeNatural Inland Features20 Promontory 30 Plateau21 Range 31 Valley22 Ridge 32 Ravine, Cut23 Mountain, Mount 33 Gorge24 Summit 34 Vegetation25 Peak 35 Grassland26 Volcano 36 Paddy field27 Hill 37 Bushes28 Boulder 38 Deciduous woodland29 Table-land, Tableland 39 Coniferous woodlandSettlements50 City, Town 53 Farm51 Village 54 Saint52 Fishing villageBuildings60 Structure 74 Institute61 House 75 Cathedral62 Hut 76 Monastery, Convent63 Multi-story building 77 Lookout station, Watch tower64 Castle 78 Navigation school65 Pyramid 79 Naval college66 Column 80 Factory67 Mast 81 Brick kiln, Brick works68 Lattice tower 82 Cement works69 Mooring mast 83 Water mill70 Floodlight 84 Greenhouse71 Town hall 85 Warehouse, Storehouse72 Office 86 Cold store, Refrigerating storage73 Observatory 87 Refinery 36
  38. 38. G Topographic Terms88 Power station 94 Well89 Electric works 95 Telegraph office90 Gas works 96 Hotel91 Water works 97 Sailors’ home92 Sewage works 98 Spa hotel93 Machine house, Pump houseRoad, Rail and Air Traffic110 Street, Road 115 Footbridge111 Avenue 116 Runway112 Tramway 117 Landing lights113 Viaduct 118 Helicopter landing site114 Suspension bridgePorts, Harbors130 Tidal barrier 144 Customs harbor131 Boat lift, Slip lift, Hoist 145 Naval port132 Minor canal 146 Industrial harbor133 Sluice 147 Commercial port, Trade port134 Basin 148 Building harbor135 Reservoir 149 Oil harbor136 Reclamation area 150 Ore harbor137 Port 151 Grain harbor138 Harbor 152 Container harbor139 Haven 153 Timber harbor140 Inner harbor 154 Coal harbor141 Outer harbor 155 Ferry harbor142 Deep water harbor 156 Police143 Free portHarbor Installations170 Terminal 180 Row of piles171 Building slip 181 Bollard172 Building yard 182 Conveyor173 Buoy yard, Buoy dump 183 Storage tanker174 Bunker station 184 Lighter Aboard Ship- LASH175 Reception facilities for oily wastes 185 Liquified Natural Gas- LNG176 Tanker cleaning facilities 186 Liquified Petroleum Gas- LPG177 Cooling water intake/outfall 187 Very Large Crude Carrier- VLCC178 Floating barrier boom 188 Ultra Large Crude Carrier- ULCC179 Piling 189 Shipyard 37
  39. 39. H Tides and CurrentsTerms Relating to Tidal Levels Supplementary national symbols: a – i1 CD Chart Datum, Datum for sounding reduction2 LAT Lowest Astronomical Tide3 HAT Highest Astronomical Tide4 MLW Mean Low Water5 MHW Mean High Water6 MSL Mean Sea Level7 Height datum, Land survey datum8 MLWS Mean Low Water Springs9 MHWS Mean High Water Springs10 MLWN Mean Low Water Neaps11 MHWN Mean High Water Neaps12 MLLW Mean Lower Low Water13 MHHW Mean Higher High Water14 MHLW Mean Higher Low Water15 MLHW Mean Lower High Water16 Sp Spring tide17 Np Neap tideTidal Levels and Charted Data Tide Gauge  T20 38
  40. 40. H Tides and CurrentsTide Tables Tabular statement of semi-diurnal or diurnal tides Note: The order30 of the columns of levels will be the same as that used in national tables of tidal predictions31 Tidal stream tableTidal Streams and Currents Supplementary national symbols: m – uBreakers  K Tide Gauge  T40 Flood tide stream with rate41 Ebb tide stream42 Current in restricted waters Ocean current with rates and43 seasons44 Overfalls, tide rips, races45 Eddies Position of tabulated tidal46 stream data with designation Offshore position for which47 tidal levels are tabulated 39
  41. 41. H Tides and CurrentsSupplementary National Symbolsa High Water HWb Higher High Water HHWc Low Water LWd Low-Water Datum LWDe Lower Low Water LLWf Mean Tide Level MTLg Indian Spring Low Water ISLW High-Water full and changeh (Vulgar establishment of the HWF&C port)i Low-Water full and change LWF&Cj Columbia River Datum CRDk Gulf Coast Low Water Datum GCLWDl Stream Strm Current, general, with raten Velocity, Rate velo Knots knp Height htq Flood flr New moons Full moont Current diagramu Gulf Stream Limits 40
  42. 42. I Depths General 1 ED Existence doubtful 2 SD Sounding of doubtful depth 3.1 Rep Reported, but not confirmed 3.2 Rep(2011) Reported (with year of report), but not confirmed Reported, but not confirmed 4 sounding or danger (on small-scale charts only) Soundings Supplementary national symbols: a – c Plane of Reference for Depths  H Plane of Reference for Heights  H Sounding in true position (NOAA uses upright 10 soundings on English unit charts and sloping soundings on Metric charts) 11 Sounding out of position Least depth in narrow 12 channel No bottom found at depth 13 shown Soundings which are unreliable or taken from a smaller scale source (NOAA 14 uses sloping soundings on English unit charts and upright soundings on Metric charts) Drying heights and contours 15 above chart datum Natural watercourse (in 16 intertidal area), tidal gully, tideway Depths in Fairways and Areas Supplementary national symbols: a, b Plane of Reference for Depths  H 20 Limit of dredged area 41
  43. 43. I Depths Dredged channel or area with 21 depth of dredging in meters and decimeters Dredged channel or area with 22 depth and year of the latest control survey Dredged channel or area with 23 maintained depth Area swept by wire drag. The depth is shown at Chart 24 Datum (The latest date of sweeping is shown in parentheses) Unsurveyed or inadequately 25 surveyed area; area with inadequate depth information 42
  44. 44. I Depths Depth Contours 30 31 Approximate depth contours Supplementary National Symbols a Swept channel Swept area, not adequately sounded b (shown by purple or green tint) c Stream 43
  45. 45. J Nature of the SeabedTypes of Seabed Supplementary national abbreviations: a – agRocks  K 1 S Sand 2 M Mud 3 Cy Clay 4 Si Silt 5 St Stones 6 G Gravel 7 P Pebbles 8 Cb Cobbles9.1 R Rock; Rocky Rk; rky9.2 Bo Boulders Blds10 Co Coral, Coralline algea11 Sh Shells (skeletal remains) Two layers, e.g. sand over12.1 S/M mud The main constituent is given12.2 fS.M.Sh first for mixtures, e.g. fine f S M Sh sand with mud and shells13.1 Wd Weed (including kelp)13.2 Kelp, Weed14 Sandwaves15 Spring in seabedTypes of Seabed, Intertidal Areas20 Areas with stones and gravel Rocky area, which covers and21 uncovers Coral reef, which covers and22 uncovers 44
  46. 46. J Nature of the SeabedQualifying Terms Supplementary national symbols: ah – bf30 f Fine Note: J 30-32 to be31 m Medium used only in relation to sand32 c Coarse33 bk Broken34 sy Sticky35 so Soft36 sf Stiff37 v Volcanic vol38 ca Calcareous Ca39 h HardSupplementary National Abbreviationsa Ground Grdb Ooze Ozc Marl Mld Shingle Snf Chalk Ckg Quartz Qzh Schist Sch i Coral head Co Hd j Madrepores Mdsk Volcanic ash Vol Ash l Lava Lam Pumice Pmn Tufa To Scoriae Scp Cinders Cnq Manganese Mnr Oysters Oyss Mussels Mst Sponge Spgu Kelp Kv Grass Grsw Sea-tangle Stgx Spicules Spiy Foraminifera Frz Globigerina Glaa Diatoms Diab Radiolaria Rdac Pteropods Pt 45
  47. 47. J Nature of the Seabedad Polyzoa Poae Cirripedia Ciraf Fucus Fuag Mattes Maah Small smlai Large lrgaj Rotten rtak Streaky stral Speckled spkam Gritty gtyan Decayed decao Flinty flyap Glacial glacaq Tenacious tenar White whas Black bl; bkat Violet viau Blue buav Green gnaw Yellow ylax Orange oray Red rdaz Brown brba Chocolate chbb Gray gybc Light ltbd Dark dkbe Varied vardbf Uneven unev 46
  48. 48. K Rocks, Wrecks and ObstructionsGeneral Danger line: A danger line draws attention to a danger which would not stand out clearly enough if 1 represented solely by its symbol (e.g. isolated rock) or delimits an area containing numerous dangers, through which it is unsafe to navigate 2 Swept by wire drag or diver Depth unknown, but 3 estimated to have a safe clearance to the depth shownRocksPlane of Reference for Heights   H Plane of Reference for Depths  H Rock (islet) which does not10 cover, height above height datum Rock which covers and11 uncovers, height above chart datum Rock awash at the level of12 chart datum Underwater rock of unknown13 depth, dangerous to surface navigation Underwater rock of known14.1 depth inside the corresponding depth area Underwater rock of known depth outside the14.2 corresponding depth area, dangerous to surface navigation Underwater rock of known15 depth, not dangerous to surface navigation 47
  49. 49. K Rocks, Wrecks and Obstructions Coral reef which is always16 covered17 BreakersWrecks and Fouls Supplementary national symbols: cPlane of Reference for Depths   H Wreck, never covers, on large-20 scale charts Wreck, covers and uncovers,21 on large-scale charts Submerged wreck, depth22 known, on large-scale charts Submerged wreck, depth23 unknown, on large-scale charts Wreck showing any portion of24 hull or superstructure at level of Chart Datum Wreck of which the mast(s)25 only are visible at Chart Datum Wreck, least depth known by26 sounding only Wreck, least depth known,27 swept by wire drag or diver Dangerous wreck, depth28 unknown Sunken wreck, not dangerous29 to surface navigation Wreck, least depth unknown,30 but considered to have a safe clearance to the depth shown Foul ground, non-dangerous to navigation but to be avoided31 by vessels anchoring, trawling, etc. (e.g. remains of wreck, cleared platform) 48
  50. 50. K Rocks, Wrecks and ObstructionsObstructions and AquaculturePlane of Reference for Depths   H Kelp, Seaweed   J Underwater Installations   L40 Obstruction, depth unknown Obstruction, least depth41 known by sounding only Obstruction, least depth42 known, swept by wire drag or diver Stumps of posts or piles,43.1 wholly submerged Submerged pile, stake, snag,43.2 or stump (with exact position)44.1 Fishing stakes Fish trap, Fish weir, Tunny44.2 nets Fish trap area, Tunny nets45 area46.1 Fish haven Fish haven with minimum46.2 depth47 Shellfish beds Marine farm (on large-scale48.1 charts) Marine farm (on small-scale48.2 charts) 49
  51. 51. K Rocks, Wrecks and ObstructionsSupplementary National Symbolsa Rock awash (height unknown) Shoal sounding on isolatedb rock or rocks Sunken wreck covered 20 toc 30 metersd Submarine volcanoe Discolored water Sunken danger with depthf cleared (swept) by wire dragg Reef of unknown extent Reef Coral reef, detachedh (uncovers at sounding datum)i Submerged cribj Crib, duck blind (above water)k Submerged duck blindl Submerged platform Coral reef which covers andm uncoversn Sinkers Foul area, foul with rocks oro wreckage, dangerous to navigationp Unexploded ordnanceq Float Stumps of posts or piles, whichr cover and uncover 50
  52. 52. L Offshore InstallationsGeneralAreas and Limits  N 1 Name of oilfield or gasfield Platform with designation/ 2 name Limit of safety zone around 3 offshore installation 4 Limit of development area Wind turbine, floating wind5.1 turbine, vertical clearance under blade Wind farm5.2 Wind farm (floating)6 Wave farmPlatforms and MooringsMooring Buoys  Q Production platform, Platform,10 Oil derrick11 Flare stack (at sea) Single Point Mooring (SPM),12 including Single Anchor Leg Mooring (SALM), Articulated Loading Column (ALC) Observation/research platform13 (with name) Disused platform with14 superstructure removed15 Artificial island 51
  53. 53. L Offshore Installations Single Buoy Mooring (SBM),16 Oil or gas installation buoy, Catenary Anchor Leg Mooring (CALM)17 Moored storage tanker18 Mooring ground tackleUnderwater Installations Supplementary national symbol: aPlane of Reference for Depths  H Obstructions  K20 Submerged production well Suspended well, depth over21.1 wellhead unknown Suspended well, with depth21.2 over wellhead21.3 Wellhead with height above the sea floor22 Site of cleared platform Above-water wellhead (lit or23 unlit)24 Underwater turbine Subsurface Ocean(ographic)25 Data Acquisition System (ODAS)Submarine Cables30.1 Submarine cable30.2 Submarine cable area31.1 Submarine power cable31.2 Submarine power cable area32 Disused submarine cable 52
  54. 54. L Offshore InstallationsSubmarine Pipelines Supply pipeline: unspecified,40.1 oil, gas, chemicals, water Supply pipeline area:40.2 unspecified, oil, gas, chemicals, water Outfall and intake: unspecified,41.1 water, sewer, outfall, intake Outfall and intake area:41.2 unspecified, water, sewer, outfall, intake Buried pipeline pipe (with42.1 nominal depth to which buried)42.2 Pipeline Tunnel Potable Water intake, diffuser,43 or crib44 Disused pipeline/pipeSupplementary National Symbols a Submerged well (buoyed) 53
  55. 55. M Tracks and RoutesTracks Supplementary national symbols: a – cTracks Marked by Lights  P Leading Beacons  Q Leading line (solid line is the1 track to be followed, , means “in line”) Transit (other than leading line),2 clearing line Recommended track based on a3 system of fixed marks Recommended track not based4 on a system of fixed marks One-way track and DW track5.1 based on a system of fixed marks One-way track and DW track not5.2 based on a system of fixed marks Recommended track with6 maximum authorized draft statedRouting Measures Supplementary national symbols: d – eBasic Symbols10 Established (mandatory) direction of traffic flow11 Recommended direction of traffic flow Separation line (large-scale,12 small-scale)13 Separation zone Limit of restricted routing14 measure (e.g. Inshore Traffic Zone (ITZ), Area to be Avoided (ATBA)15 Limit of routing measure16 Precautionary area Archipelagic Sea Lane (ASL);17 axis line and limit beyond which vessels shall not navigate Fairway designated by18 regulatory authority 54
  56. 56. M Tracks and RoutesExamples of Routing Measures 55
  57. 57. M Tracks and RoutesExamples of Routing Measures Traffic Separation Scheme (TSS), traffic separated by separation zone Traffic Separation Scheme, traffic separated by natural obstructions Traffic Separation Scheme, with outer separation zone separating traffic using scheme from traffic not using it Traffic Separation Scheme, roundabout with separation zone Traffic Separation Scheme, with “crossing gates” Traffic Separation Scheme crossing, without designated precautionary area Precautionary area Inshore Traffic Zone (ITZ) with defined end limits Inshore Traffic Zone without defined end limits Recommended direction of traffic flow, between traffic separation schemes Recommended direction of traffic flow for ships not needing a deep water route Deep Water route (DW), as part of one-way traffic lane Two-way Deep Water route,with minimum depth stated Deep Water route, center line as recommended one-way or two-way track Recommended route, one-way and two-way (often marked by centerline buoys) Two-way route with one-way sections Area to be Avoided (ATBA), around navigational aid Area to be Avoided, e.g. because of danger of strandingRadar Surveillance Systems30 Radar surveillance station31 Radar range32.1 Radar reference line Radar reference line coinciding32.2 with a leading line 56
  58. 58. M Tracks and RoutesRadio Reporting Radio reporting (calling-in or way) points showing direction(s)40.1 of vessel movement with designation (if any) and VHF- channel)40.2 Radio reporting lineFerries50 Ferry51 Cable FerrySupplementary National Symbols Recommended track for deep a draft vessels (track not defined by fixed marks) Depth is shown where it has b been obtained by the cognizant authority c Alternate course Established traffic separation d scheme: roundabout If no separation zone exists, the e center of the roundabout is shown by circle 57
  59. 59. N Areas and LimitsGeneralDredged and Swept Areas  I Submarine Cables, Submarine Pipelines  L Tracks, Routes  M Maritime limit in general, usually implying permanent1.1 physical obstructions (tint band for emphasis) Maritime limit in general, usually implying no permanent1.2 physical obstructions (tint band for emphasis)2.1 Limit of restricted area Limit of area into which entry is2.2 prohibitedAnchorages and Anchorage Areas10 Anchorage11.1 Anchor berths Anchor berths with swinging11.2 circle Note: Anchors as part of the limit symbol are not shown for small areas. Other types of anchorage areas may be shown.12.1 Anchorage area in general12.2 Numbered anchorage area12.3 Named anchorage area Deep water anchorage area,12.4 Anchorage area for deep draft vessels 58
  60. 60. N Areas and Limits12.5 Tanker anchorage area Anchorage area for periods up12.6 to 24 hours12.7 Explosives anchorage area12.8 Quarantine anchorage area12.9 Reserved anchorage area13 Seaplane operating area14 Anchorage for seaplanesRestricted Areas Supplementary national symbols: d, e, g20 Anchoring prohibited21 Fishing prohibited 59
  61. 61. N Areas and Limits Limit of nature reserve: Bird sanctuary Seal sanctuary22 Non-specific nature reserve, National parks, Marine Reserves (MR) Particularly Sensitive Sea Area (PSSA) Explosives dumping ground,23.1 individual mine or explosive Explosives dumping ground23.2 (disused), Foul (explosives) Dumping ground for chemical24 waste25 Degaussing range (DG range) 60
  62. 62. N Areas and Limits Historic wreck and restricted26 area27 Maximum speedMilitary Practice Areas30 Firing practice area Military restricted area, entry31 prohibited Mine-laying (and counter-32 measures) practice area Submarine transit lane and33 exercise area34 MinefieldInternational Boundaries and National Limits Supplementary national symbols: a, f, h40 International boundary on land International maritime41 boundary Straight territorial sea baseline42 with base point43 Seaward limit of territorial sea44 Seaward limit of contiguous zone45 Limits of fishery zones46 Limit of continental shelf Limit of Exclusive Economic47 Zone (EEZ)48 Customs limit 61
  63. 63. N Areas and Limits49 Harbor limitVarious Limits Supplementary national symbols: a, b Limit of fast ice, Ice front (with60.1 date) Limit of sea ice (pack ice)60.2 seasonal (with date) Floating barrier, including log61 ponds, security barriers, ice booms, shark nets62.1 Spoil ground62.2 Spoil ground (disused)63 Extraction (dredging) area64 Cargo transhipment area65 Incineration areaSupplementary National symbols a COLREGS demarcation line b Limit of fishing area (fish trap areas) c Dumping ground d Dumping area (Dump site) e Limit of airport Reservation line f (Options) g Dump site h Three Nautical Mile Line i No Discharge Zone 62
  64. 64. O Hydrographic Terms1 Ocean 43 Shelf-edge2 Sea 44 Slope3 G Gulf 45 Continental slope4 B Bay, Bayou 46 Continental rise5 Fd Fjord 47 Continental borderland6 L Loch, Lough, Lake 48 Basin7 Cr Creek 49 Abyssal plain8 Lag Lagoon 50 Hole9 C Cove 51 Trench10 In Inlet 52 Trough11 Str Strait 53 Valley12 Sd Sound 54 Median Valley13 Pass Passage, Pass 55 Canyon14 Chan Channel 56 Seachannel15 Narrows 57 Moat, Sea moat16 Entr Entrance 58 Fan17 Est Estuary 59 Apron18 Delta 60 Fracture zone19 Mth Mouth 61 Scarp, Escarpment20 Rd Roads, Roadstead 62 Sill21 Anch Anchorage 63 Gap22 Apprs Approach, Approaches 64 Saddle23 Bk Bank 65 Levee24 66 Province25 Shl Shoal 67 Tideway, Tidal gully26 Rf Co rf Reef, Coral reef 68 Sidearm Turning basin, Turning area,27 Sunken rock 69 Turning Circle28 Le Ledge Other Terms29 Pinnacle 80 projected30 Ridge 81 lighted31 Rise 82 buoyed32 Mt Mountain, Mount 83 marked33 SMt Seamount 84 anc ancient34 Seamount chain 85 dist distant35 Pk Peak 86 lesser36 Knoll 87 closed37 Abyssal hill 88 partly38 Tablemount 89 approx approximate39 Plateau 90 Subm, subm submerged40 Terrace 91 shoaled41 Spur 92 exper experimental42 Continental Shelf 93 D, Destr destroyed 63
  65. 65. P LightsLight Structures and Major Floating LightsMinor Light Floats  Q30, 31 Major light, minor light, light, 1 lighthouse 2 Lighted offshore platform 3 Lighted beacon tower 4 Lighted beacon Articulated light, buoyant 5 beacon, resilient beacon Major floating light (light vessel, 6 major light float, LANBY)Note: Minor lights, fixed and floating, usually conform to IALA Maritime Buoyage System characteristics. Navigational lights on 7 landmarks or other structures 8 Light off chart limitsLight CharactersLight Characters on Light Buoys  Q Abbreviation Illustration Period shown Class of light International National10.1 F F Fixed Occulting (total duration of light longer than total duration of darkness) Oc Oc Single-occulting10.2 Oc(2) Oc (2) Group-occulting Example Oc(2+3) Oc (2+3) Composite group-occulting Example Isophase (duration of light and darkness equal)10.3 Iso Iso Isophase 64
  66. 66. P Lights Flashing (total duration of light shorter than total duration of darkness) Fl Fl Single-flashing10.4 Fl(3) Fl (3) Group-flashing Example Fl(2+1) Fl (2+1) Composite group-flashing Example Long-flashing (flash 2s or10.5 LFl L Fl longer) Abbreviation Illustration Period shown Class of light International National10.6 Quick (repetition rate of 50 to 79 - usually either 50 or 60 - flashes per minute) Q Q Continuous quick Q(3) Q (3) Group quick Example IQ IQ Interrupted quick Very quick (repetition rate of 80 to 159 - usually either 100 or 120 - flashes per minute) VQ VQ Continuous very quick10.7 VQ(3) VQ (3) Group very quick Example IVQ IVQ Interrupted very quick Ultra quick (repetition rate of 160 or more - usually 240 to 300 - flashes per minute) UQ UQ Continuous ultra quick10.8 IUQ IUQ Interrupted ultra quick Mo(K)10.9 Example Mo (K) Morse Code10.10 FFl F Fl Fixed and flashing Al.WR10.11 Example AlWR Alternating 65
  67. 67. P LightsColors of Lights and Marks White (only on sector and11.1 W alternating lights)11.2 R Red11.3 G Green11.4 Bu Blue11.5 Vi Violet11.6 Y Yellow11.7 Y Or Orange11.8 Y Am AmberPeriod Period in seconds and tenths of12 2.5s 90s a secondElevationPlane of Reference for Heights  H Tidal Levels  H Elevation of light given in13 12m meters or feet 36ftRange 15M Light with single range 10M NOAA: only lesser 15/10M Light with two different ranges 15/10M14 of two ranges is charted 7M Elevation of light given in NOAA: only least of 15-7M meters or feet three ranges is chartedNote: Charted ranges are nominal ranges given in Nautical MilesDisposition (hor) Horizontally disposed15 (vert) Vertically disposed 66