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Nautical Chart Symbols, Abbreviations and Terms


Chart Number, Title, Marginal Notes
Areas, Limits

Positions, Distances, Directions, Compass
Hydrographic Terms

Natural Features
Lights

Cultural Features
Buoys, Beacons

Landmarks
Fog Signals

Ports
Radar, Radio, Electronic Position-Fixing Systems

Tides, Currents
Services

Depths
Small Craft Facilities

Nature of the Seabed
Index of Abbreviations (U.S.)

Rocks, Wrecks, Obstructions
International Abbreviations

Offshore Installations
IALA Maritime Buoyage System

Tracks, Routes



 

Chart Number, Title, Marginal Notes

Schematic Layout of an NOS Chart
 

 

Positions, Distances, Directions, Compass

Geographic Positions
Control Points
Symbolized Positions (Examples)
Units
Magnetic Compass
Compass Roses, Isogonic Lines, Local Magnetic Disturbance
Supplementary National Symbols
 

 

Natural Features

Coastline
Relief
Water Features, Lava
Vegetation
Supplementary National Symbols
 

 

Cultural Features

Settlements, Buildings
Roads, Railways, Airfields
Bridges, Clearance
Other Cultural Features
Supplementary National Symbols
 

 

Landmarks

Landmarks, 1 (General Examples)
Landmarks, page 2
Landmarks, page 3
Landmarks, page 4
Supplementary National Symbols
 

 

Ports

Hydraulic Structures in General
Harbor Installations
Canals, Barrages
Transshipment Facilities
Public Buildings
Supplementary National Symbols
 

 

Tides, Currents

Terms Relating to Tidal Levels
Tidal Levels and Charted Data
Tide Tables
Tidal Streams and Currents
Supplementary National Symbols
 

 

Depths

General
Soundings
Depths in Fairways and Areas
Depth Contours
Supplementary National Symbols
 

 

Nature of the Seabed

Types of Seabed, Intertidal Areas
Qualifying Terms
Supplementary National Abbreviations
 

 

Rocks, Wrecks, Obstructions

General
Rocks
Wrecks
Obstructions
Supplementary National Symbols
 

 

Offshore Installations

General
Platforms and Moorings
Underwater Installations
Submarine Cables
Submarine Pipelines
Supplementary National Symbol
 

 

Tracks, Routes

Tracks
Routing Measures: Basic Symbols
Routing Measures: Examples
Radar Surveillance Systems
Radio Reporting Points
Ferries
Supplementary National Symbols
 

 

Areas, Limits

General
Anchorages, Anchorage Areas
Restricted Areas
Military Practice Areas
International Boundaries and National Limits
Various Limits
Supplementary National Symbols
 

 

Hydrographic Terms

Terms and Abbreviations
 

 

Lights

Light Structures, Major Floating Lights
Light Characters
Colors of Lights
Period, Elevation, Range, Disposition
Examples of a Full Light Description
Lights Marking Fairways
Sector Lights
Lights with Limited Times of Exhibition
Special Lights
Supplementary National Symbols
 

 

Buoys, Beacons

Characteristics Common to Buoys and Beacons
Buoy Shapes and Types
Special Purpose Buoys, Seasonal Buoys
Beacon Types
Special Purpose Beacons
IALA Maritime Buoyage System
IALA Maritime Buoyage System (continued)
Supplementary National Symbols
 

 

Fog Signals

General, Types, Examples, Supplementary National Symbol
 

 

Radar, Radio, Electronic Position-Fixing Systems

Radar
Radio
Electronic Position-Fixing Systems
 

 

Services

Pilotage
Coast Guard, Rescue Stations
Signal Stations
Supplementary National Symbols
 

 

Small Craft Facilities

Small Craft Facillities; Marina Facilities
 

 

Index of Abbreviations (U.S.)

Index of Abbreviations
Supplementary National Abbreviations
 

 

International Abbreviations

International Abbreviations
 

 

IALA Maritime Buoyage System

Lateral Marks (Region A)
Lateral Marks (Region B)
Cardinal Marks (Regions A and B)
Isolated Danger Marks, Safe Water Marks, Special Marks (Regions A and B)