Learn International nautical chart symbols for sailors powerboaters #nautical #insurance


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Nautical chart symbols

Nautical chart symbols

For all navigators using paper nautical charts specified by the International Hydrographic Organization (IHO)

Chart Symbols Abbreviations is a detailed guide to all the symbols used on nautical charts specified by the International Hydrographic Organization (IHO), plus international abbreviations and supplementary national symbols used by the U.S. and U.K. hydrographic offices.

This app provides quick reference to the “INT 1″ symbols specified by the International Hydrographic Organization (IHO) for use on international marine charts. There are five main sections, each with lettered sub-sections organized into categories to guide users through the hundreds of symbols.

Features and Benefits:

  • For reference, learning revision
  • Hi-res graphics
  • Tap Enlarge feature for greater detail
  • Fully searchable index to all the symbols

The main sections are:

GENERAL – chart layouts, positions, distances, directions and compass.

TOPOGRAPHY – landmarks, ports and coastal land features.

HYDROGRAPHY – tides, currents, depths, nature of the seabed, underwater obstructions, tracks, areas, limits and hydrographic terms.

NAVIGATION AIDS SERVICES – lights, buoys, fog signals, radar, radio, services and small craft facilities.

INDEX ABBREVIATIONS – international abbreviations and index to symbols and abbreviations.

SUPPLEMENTARY NATIONAL SYMBOLS Supplementary National Symbols for nautical charts used by the United States and United Kingdom are included at the end of each section.

Chart Symbols Abbreviations is based on the United Kingdom Hydrographic Office’s print publication “Chart 5011 (INT 1) EDITION 2″ Admiralty Charts Publication and “Chart No.1 United States of America Nautical Chart Symbols, Abbreviations and Terms”.

FREE Bonus Content from “Safe Skipper”

A bonus section has tips on how to deal with emergencies including: Abandon ship; Dismasting; Distress Signals; Engine Failure; Fire Fighting; Flares; Getting a tow; Helicopter rescue; Holed hull; Man overboard; Medical emergency; Mayday; Panpan; Securité.

Electronic Chart Symbols:

ECDIS symbols used to display Electronic Navigational Chart (ENC) data on Electronic Chart Display and Information Systems (ECDIS) differ from those used on paper charts. We have produced another app Electronic Chart Symbols ECDIS that explains these symbols in detail. More


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