General Navigation Publications in Digital Format

Introduction

General navigation publications in digital format provide an essential documentary foundation for understanding the principles, methods and rules required for accurate and safe navigation. They complement nautical documents dedicated to specific geographical areas by providing general knowledge about maritime navigation, hydrography, regulations, navigation instruments, meteorology, tides and the use of GPS.

The General Navigation Publications in Digital Format category at Nautic Way Maritime Bookshop includes publications from the SHOM – French Hydrographic and Oceanographic Service, available in digital format and generally distributed as PDF documents.

The digital format is particularly useful for navigators who wish to maintain a comprehensive technical library on board, on a computer or tablet, while benefiting from rapid document searches.

What are digital general navigation publications used for?

A general publication does not simply describe a particular coastline or port. It explains the principles that allow navigators to understand and correctly use nautical information.

These documents can be used to:

• understand symbols, abbreviations and terms used on nautical charts;

• study international navigation regulations;

• understand navigation methods and instruments;

• correctly use GPS and positioning systems;

• develop a deeper understanding of tides;

• study marine meteorology;

• understand the organisation and updating of nautical documentation;

• learn the main rules applicable to recreational and professional navigation.

This documentation is therefore useful both to beginners wishing to develop solid foundations and to experienced sailors looking for a precise technical reference.

The SHOM Navigator's Guide

The Navigator's Guide is one of the most important general references in this category.

It is organised into three complementary areas:

• Volume 1: nautical documentation and information;

• Volume 2: navigation methods and instruments;

• Volume 3: nautical regulations.

Volume 1 explains the nautical documentation available to navigators and how it should be used and kept up to date.

Volume 2 presents the main navigation instruments and equipment, as well as the different methods used to determine and check a vessel's position.

Volume 3 brings together the main regulatory information required for navigation, including maritime law, collision prevention, maritime signalling, safety and traffic organisation.

Together, the three volumes provide a comprehensive methodological foundation for understanding how to prepare, conduct and monitor a voyage.

Nautical chart symbols and abbreviations

Reading a nautical chart requires a thorough understanding of precise graphical conventions.

The SHOM publication devoted to symbols, abbreviations and terms used on French nautical charts helps navigators correctly interpret the information represented on charts.

It can be used to understand:

• depths and soundings;

• wrecks;

• rocks and hazards;

• buoys and beacons;

• lights;

• harbour installations;

• cables and pipelines;

• regulated areas;

• coastal topographical information;

• nautical abbreviations.

This knowledge remains useful even when navigation is primarily carried out using GPS or a chartplotter. Electronic systems also use many conventions derived from marine cartography.

Hydrography and the limitations of nautical documents

Another important general publication deals with hydrography, nautical documents, their imperfections and their proper use.

It helps explain how hydrographic data are collected, checked and represented.

This is fundamental because a nautical chart is not an absolutely permanent or unchanging representation of the seabed. Survey quality, the age of the data, measurement conditions and natural changes in the marine environment can all affect the accuracy of the available information.

Navigators therefore need to understand the limitations of the documents they use and maintain a critical approach to nautical data.

This knowledge is particularly important when navigating close to shore, in estuaries, in channels or in areas where seabed conditions can change.

Regulations and the COLREGs

Maritime navigation is also governed by a comprehensive set of international regulations.

The publication covering the International Regulations for Preventing Collisions at Sea, commonly known as the COLREGs or RIPAM in French, provides a reference for understanding the rules of the road at sea.

It covers in particular:

• collision situations;

• vessels meeting head-on;

• crossing situations;

• overtaking;

• give-way and stand-on vessels;

• navigation lights and shapes;

• sound signals;

• restricted-visibility situations.

These rules apply equally in the English Channel, the Mediterranean, the Bay of Biscay, the North Sea and during ocean passages.

They are particularly important in areas with heavy traffic, such as the approaches to Dunkirk, Calais, Le Havre, Cherbourg, Rotterdam, Southampton and Gibraltar.

GPS and maritime navigation

The SHOM Guide No. 940 – GPS and Maritime Navigation is intended for navigators using GPS at sea in a wide variety of contexts, including recreational sailing, commercial shipping, fishing and professional navigation.

The objective is not simply to read a GPS position. It is also important to understand the principles and limitations of electronic positioning.

Navigators should in particular be able to distinguish between:

• the calculated position;

• the stated accuracy;

• the geodetic reference system used;

• possible positioning errors;

• information displayed by electronic equipment;

• data originating from different sources.

This knowledge is particularly useful when GPS is combined with navigation software, radar, ECDIS or an integrated navigation system.

Marine meteorology

Meteorology is a decisive factor when preparing a voyage.

The Météorologie Maritime 95 publication provides general knowledge about meteorological phenomena encountered at sea, including winds, sea conditions, clouds, hazardous phenomena and specific aspects of tropical meteorology.

This knowledge can be applied in very different environments.

In the English Channel and North Sea, it helps explain the effects of Atlantic depressions, fronts and strong winds.

In the Bay of Biscay, it contributes to the analysis of weather situations that may result in a rapid deterioration of sea conditions.

In the Mediterranean, it helps navigators better understand regional wind phenomena and the effects of coastal relief.

For an Atlantic crossing between Las Palmas, Mindelo and the Caribbean, understanding tropical meteorology and the trade winds is also fundamental.

Tides and coastal navigation

The category also includes references devoted to tides.

Understanding tides makes it possible to correctly interpret water levels, times of high and low water and changes in sea level.

This knowledge is particularly important in areas with a large tidal range, such as the English Channel and parts of Brittany.

It is directly relevant to ports such as Saint-Malo, Granville, Cherbourg, Brest, Le Havre and Dieppe, as well as to many areas along the French Atlantic coast.

The theoretical understanding of tides therefore complements the practical information provided by tide tables and port-specific nautical documents.

The benefits of digital format

Digital format offers several advantages for navigators.

It makes it possible to:

• store several publications in a small amount of space;

• perform rapid keyword searches;

• consult a chapter or definition without browsing through the entire document;

• carry a complete technical library;

• facilitate consultation on a compatible computer or tablet;

• access digital editions and any applicable updates according to the conditions of the publication.

For a long voyage, this reduction in physical space can be particularly useful.

A navigator preparing an Atlantic crossing can therefore keep general references covering meteorology, GPS, regulations, navigation methods and nautical documentation within the same digital environment.

References applicable to all navigation areas

Digital general publications have the advantage of not being restricted to a single geographical area.

Their principles can be applied in:

• the English Channel;

• the North Sea;

• the Iroise Sea;

• the Bay of Biscay;

• the Mediterranean;

• the Adriatic;

• the Aegean Sea;

• the Caribbean Sea;

• the Red Sea;

• the Indian Ocean;

• the North and South Atlantic;

• the Pacific Ocean.

The cartographic documents used alongside them will then depend on the geographical area concerned.

SHOM is a major reference for French waters. Admiralty covers numerous international navigation areas, while national hydrographic offices provide official documentation for their respective waters. NV Charts also provides coverage for various European and international cruising areas.

General publications therefore explain the principles, while hydrographic and nautical documents provide information specific to the area being navigated.

Who are these publications intended for?

Digital general publications can be useful to many different users:

• beginner sailors;

• experienced recreational sailors;

• skippers;

• offshore sailors;

• sailing and motorboat crews;

• professional fishermen;

• merchant seafarers;

• maritime students;

• instructors and teachers;

• navigators preparing for an ocean passage.

They can also provide a documentary foundation for preparing an examination, developing a particular skill or checking a regulation before sailing.

Digital documentation and navigation safety

Digital format does not reduce the importance of maritime knowledge.

On the contrary, the increasing use of electronic systems makes it essential to understand the principles behind the information displayed.

A GPS provides a position, but the navigator must know how to interpret it.

An electronic chart displays symbols, but the navigator must understand their meaning.

A navigation program calculates a route, but the navigator must be able to assess that route according to hazards, navigation regulations, traffic, weather and local conditions.

General documentation therefore helps keep the human element at the centre of navigational decision-making.

Complementary navigation documentation

Digital general publications do not constitute a complete navigation library by themselves.

Depending on the voyage, they form part of a broader documentary system including:

• nautical charts appropriate to the equipment and type of navigation;

• sailing directions;

• cruising guides;

• Lists of Lights;

• radio signal publications;

• tide tables and tidal current information;

• weather information;

• Notices to Mariners;

• regulatory documents.

This complementarity makes it possible to clearly distinguish between the general principles of navigation and the information specific to a particular area, port or route.

Conclusion

General navigation publications in digital format constitute essential technical documentation for understanding and practising maritime navigation.

The Navigator's Guides, regulations, chart symbols and abbreviations, hydrography, GPS, marine meteorology and tides cover areas that are fundamental to voyage planning and navigation.

Digital format provides considerable flexibility: limited storage requirements, rapid searching and the ability to keep several references within the same electronic environment.

These publications can be used when sailing in the English Channel between Cherbourg and Le Havre, in the Bay of Biscay around Brest, La Rochelle or Bayonne, in the Mediterranean around Marseille, Toulon or Ajaccio, or when preparing an Atlantic crossing and navigation in the Caribbean, Indian Ocean or Pacific.

They therefore provide a general documentary foundation that enables navigators to better understand charts, instruments, regulations and the maritime environment in which they operate.

FAQ – General Navigation Publications in Digital Format

What are digital general navigation publications?

They are technical documents presenting the general principles of maritime navigation, including regulations, hydrography, nautical documentation, instruments, GPS, meteorology, tides and chart symbols.

Which general digital publications does SHOM provide?

The catalogue includes the three volumes of the Navigator's Guide, the International Regulations for Preventing Collisions at Sea, maritime signalling, symbols and abbreviations used on nautical charts, the GPS and Maritime Navigation Guide, Météorologie Maritime 95, the National Flags and Distinctive Marks Album, and publications covering tides.

In what format are SHOM's digital general publications provided?

SHOM's general publications are currently supplied exclusively in digital PDF format.

What is the advantage of a navigation publication in PDF format?

PDF format makes it easy to store several documents in a small amount of space and to quickly search for a term, regulation or item of information within the document.

Is the Navigator's Guide suitable for recreational sailors?

Yes. Its three volumes cover nautical documentation and information, navigation methods and instruments, and nautical regulations.

Which publication can be used to understand nautical chart symbols?

The publication covering symbols, abbreviations and terms used on nautical charts explains the cartographic conventions and information represented on nautical documents.

Which publication covers GPS and electronic navigation?

SHOM provides Guide No. 940 – GPS and Maritime Navigation, dedicated to the use of GPS in the maritime environment.

Is there a general publication devoted to marine meteorology?

Yes. Météorologie Maritime 95 covers meteorological phenomena, sea conditions and various aspects of meteorology useful to navigators.

Are general publications useful for an ocean crossing?

Yes. They can help develop knowledge of meteorology, navigation methods, GPS, regulations and the general principles required when preparing an offshore voyage.

Do general publications replace nautical charts?

No. They provide the knowledge required to understand and use nautical documentation correctly, but they do not replace the cartographic documents appropriate to the area and type of navigation.

Are general publications useful when using GPS or navigation software?

Yes. Understanding positioning systems, cartographic conventions, navigation methods and their limitations remains essential even when navigation is largely computerised.

Can these publications be used in all maritime areas?

Their general principles are applicable in all navigation areas, from the English Channel and Mediterranean to the Atlantic, Caribbean, Indian Ocean and Pacific. Specific documents for each area must nevertheless complement the general documentation.