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NGA North Sea and Norwegian Sea Nautical Chart

The North Sea and Norwegian Sea form a vast strategic maritime area linking Northern Europe, the North Atlantic and the Arctic regions. From the Strait of Dover and the North Sea to the Norwegian coast, the Lofoten Islands and Svalbard, this area concentrates major shipping routes, fishing activities, offshore operations and areas where weather conditions can sometimes be challenging.

The NGA (National Geospatial-Intelligence Agency) produces geospatial and nautical documentation covering numerous international maritime regions. NGA nautical charts are used to prepare coastal, offshore and ocean passages in the areas covered. An NGA nautical chart provides the cartographic information required to analyse a route, depths and hazards, as well as the representation of aids to navigation.

Nautic Way, a specialist in nautical charts and navigation documentation, distributes these charts for sailors looking for international nautical documentation.

What is this chart used for?

An NGA nautical chart of the North Sea and Norwegian Sea is used to prepare and support navigation in a region characterised by heavy maritime traffic, tidal currents, varying depths, numerous channels and, further north, subarctic conditions.

Voyage planning

The chart can be used to:

• plan a coastal or offshore route;

• plot the vessel's position;

• measure distances;

• identify charted hazards;

• analyse passages and channels;

• prepare coastal approaches;

• maintain an overall view of the route;

• complement information provided by electronic navigation systems.

In the North Sea, the density of commercial traffic and the presence of numerous offshore installations make route planning particularly important. In the Norwegian Sea, the remoteness of certain areas and North Atlantic weather conditions add further constraints that need to be considered.

Hydrographic information

Depending on the area and scale, NGA nautical charts show various types of hydrographic information, including:

• soundings;

• depths;

• seabed characteristics;

• shoals;

• rocks;

• isolated dangers;

• wrecks;

• channels;

• coastline contours.

This information enables the navigator to assess seabed configuration and plan a route suited to the characteristics and draught of the vessel.

Aids to navigation

The charts also show relevant aids to navigation for the area, including:

• lighthouses;

• lights;

• buoys;

• beacons;

• light sectors;

• other marks and aids to navigation.

This information is particularly important in coastal areas, channels and port approaches.

Regulatory and maritime information

Depending on the chart and area covered, the documentation may also show:

• Exclusive Economic Zone (EEZ) boundaries;

• regulated areas;

• military areas;

• channels;

• port infrastructure;

• quays;

• offshore installations;

• other information relevant to navigation.

The North Sea is particularly characterised by a high concentration of commercial and offshore activities. Information concerning infrastructure and regulated areas must therefore be taken into account when planning a route.

International navigation

Another advantage of an NGA chart is access to documentation intended for international maritime areas.

A route linking the English Channel, the North Sea, Norway and the North Atlantic may cross several areas covered by different national hydrographic authorities. NGA charts can therefore form part of the international charting documentation used to plan a voyage.

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Which type of navigator is this chart recommended for?

NGA nautical charts of the North Sea and Norwegian Sea may be useful to a wide range of users, from long-distance leisure sailors to professionals operating on international shipping routes.

Long-distance cruising sailors

For sailors planning a long-distance voyage in Northern Europe or a passage towards Norway and the North Atlantic, these charts provide an overall representation of the areas covered and help with planning the different stages of an itinerary.

Offshore sailors

Sailors undertaking offshore passages can use appropriate charts to prepare routes away from the coast.

They provide an overall view of the area and help prepare the transition between coastal and offshore navigation.

Circumnavigators

For a circumnavigation, the North Sea and Norwegian Sea may form part of a wider route between Europe, the North Atlantic and Arctic regions.

NGA documentation can therefore complement national charts used for coastal navigation and detailed approaches.

Coastal and offshore fishermen

Fishermen may require cartographic information relating to depths, seabed characteristics, hazards and maritime boundaries.

For offshore fishing, smaller-scale charts also provide an overall view of the areas being operated in.

Merchant shipping and maritime professionals

The North Sea and Norwegian Sea are important routes for international commercial shipping.

Professionals may require charting documentation suited to their routes and the different areas crossed. The documents required must, however, be determined according to the vessel, its flag, its route and the applicable regulatory requirements.

Shipowners and voyage planners

Charts may also be used for voyage planning and analysis of international routes, particularly to identify traffic areas, offshore infrastructure, port approaches and areas requiring particular attention.

Navigation schools and training centres

Paper charts are also a valuable educational tool for teaching:

• route plotting;

• position fixing;

• reading soundings;

• identifying hazards;

• using international chart symbols;

• preparing coastal or offshore passages.

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Reading and understanding the chart

An NGA nautical chart uses a cartographic representation designed to allow navigators to quickly identify the information required for voyage planning and navigation.

Different scales

Nautical documentation may be organised according to several scale levels:

• ocean charts;

• offshore charts;

• coastal charts;

• approach charts.

An ocean chart provides an overall view of a very large area. An offshore chart allows a more precise route to be planned near coastal areas. Coastal and approach charts provide greater detail when the vessel approaches the coastline or a port.

International chart symbols

The charts use international cartographic symbols and conventions that enable navigators to identify the main categories of information.

The INT standards of the IHO (International Hydrographic Organization) are an important reference for international chart representation.

Navigators can therefore identify soundings, hazards, aids to navigation, wrecks, rocks and other charted features according to a standardised system.

Soundings and depths

Soundings indicate the depths represented on the chart according to the conventions of the relevant chart series.

They make it possible to analyse changes in depth and identify areas where particular caution is required.

In the North Sea and Norwegian Sea, this information is particularly useful given the diversity of environments encountered: continental shelves, shallow-water areas, channels, fjords and deeper areas of the North Atlantic.

Navigational hazards

Charts may show, in particular:

• shoals;

• rocks;

• reefs;

• wrecks;

• isolated dangers;

• shallow-water areas.

Navigators must also take into account the latest nautical information that may affect the assessment of an area.

Aids to navigation

Lighthouses, lights, buoys and beacons are represented using specific symbols.

Light sectors, in particular, help identify the characteristics of the lights associated with certain aids to navigation.

EEZs, regulated areas and infrastructure

Charts may also show Exclusive Economic Zone boundaries, military or regulated areas and various maritime infrastructure.

In the North Sea, the significant presence of offshore installations makes this information particularly relevant when planning routes.

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North Sea and Norwegian Sea: navigation characteristics

The North Sea and Norwegian Sea have very different characteristics depending on latitude and proximity to the coast.

North Sea: shipping traffic and offshore infrastructure

The North Sea is one of Europe's busiest maritime areas.

Navigation is influenced in particular by:

• heavy commercial traffic;

• numerous ports;

• international shipping routes;

• ferries;

• fishing areas;

• offshore platforms and installations;

• channels;

• tidal currents;

• sandbanks and variations in depth.

Chart-based planning must therefore take into account navigation, traffic and the infrastructure present in the area.

Norwegian Sea: navigation towards the North Atlantic

As sailors progress into the Norwegian Sea, the maritime environment changes.

Navigators encounter in particular:

• deeply indented coastlines;

• fjords;

• archipelagos;

• islands;

• offshore navigation areas;

• North Atlantic weather conditions;

• increasingly northern waters.

Weather and sea conditions can change rapidly. Nautical charts should therefore be used together with weather forecasts and available nautical information.

Towards the Lofoten Islands and Svalbard

Voyages towards northern Norway, the Lofoten Islands and Svalbard present additional challenges associated with high latitudes.

Depending on the season and area, navigators may encounter:

• low temperatures;

• strong winds;

• variable visibility;

• significant swell;

• winter conditions;

• ice in the most northerly regions.

For voyages near Svalbard, nautical charts should be supplemented by available information on ice, weather and local conditions.

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NGA chart references for the North Sea and Norwegian Sea

NGA documentation includes charts at different scales covering coastal, offshore and ocean areas.

Among the references associated with this region are documents covering areas between northern Norway, the Lofoten Islands, Svalbard and the North Atlantic.

NGA 43000 is associated in particular with offshore coverage from the Lofoten Islands to Svalbard.

For broader coverage of the North Atlantic, certain NGA ocean charts may also be relevant, including NGA 00121.

The choice of chart should always be based on the exact area, intended route and level of detail required.

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Reliability, updates and safety

Safe navigation depends in particular on using appropriate and up-to-date nautical documentation.

Use the latest available edition

Before a voyage, it is important to check the chart edition and the latest nautical information that may affect the planned route.

Nautic Way supplies the available documents corresponding to the editions offered by the relevant producers.

Notices to Mariners

Notices to Mariners are an important source of corrections and information that may affect nautical documentation.

They should be taken into account as part of thorough voyage planning.

Paper charts and safety

Even when navigation primarily relies on electronic systems, a paper chart can remain highly useful as:

• a voyage-planning tool;

• an overall view of the area;

• a verification tool;

• a means of plotting positions;

• a backup in the event of electronic system failure.

For professional vessels, charting documentation requirements depend in particular on the type of vessel, its flag, its route and the applicable regulations. The requirements specific to each voyage should therefore be verified.

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Paper charts and electronic navigation

Modern navigation generally combines several sources of information.

GPS determines the vessel's position. A chartplotter displays that position on electronic charts. ECDIS may be used in professional contexts where the applicable requirements are met.

A paper chart provides an independent representation that can be used to:

• plan a route;

• visualise an entire area;

• plot a position;

• check the consistency of an electronic route;

• provide an independent backup in the event of a technical failure.

Paper charts and electronic charts can therefore be considered complementary tools rather than necessarily competing solutions.

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Nautic Way expertise for sailors

Nautic Way is a specialist in nautical charts and navigation documentation.

The bookshop offers a selection of international nautical documents for leisure sailors, offshore sailors, professionals, navigation schools and anyone looking for documentation suited to their sailing area.

The catalogue includes:

• NGA charts;

• SHOM charts;

• Admiralty charts;

• Imray charts;

• NV Charts;

• international nautical charts;

• paper charts;

• digital nautical charts;

• nautical publications;

• sailing directions;

• nautical guides;

• navigation books;

• tide tables;

• other navigation documents.

With more than 20,000 references, Nautic Way helps customers find documentation suited to the different stages of a voyage, from ocean passage planning to coastal approaches.

Nautic Way
9 rue Benjamin Rabier
85300 Challans
France

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FAQ – NGA North Sea and Norwegian Sea Nautical Chart

Which NGA nautical chart should I choose for navigation in the North Sea and Norwegian Sea?

The choice depends on the planned route and the level of detail required. An offshore chart is suitable for planning a route away from the coast, while a coastal or approach chart is required when navigation comes closer to the coastline or a port.

Which NGA chart covers the Lofoten Islands and Svalbard?

NGA 43000 is associated with coverage from the Lofoten Islands to Svalbard. However, the exact coverage and available edition should be checked before ordering a chart for a specific route.

Is there an NGA chart of the North Atlantic?

Yes. NGA documentation includes ocean charts covering large areas of the North Atlantic. NGA 00121 is one such North Atlantic ocean chart.

Is an NGA chart sufficient for navigation in the North Sea?

An NGA chart is one component of nautical documentation, but it should be used together with the other information required for navigation, including nautical publications, weather information, corrections and documentation suited to coastal and port approaches.

Do NGA charts show depths?

Yes. Nautical charts include soundings and depth information according to the area and scale represented.

Can an NGA chart be used with GPS?

Yes. A paper chart can be used to manually plot the position provided by GPS and compare the electronic position with the cartographic representation.

What is the difference between an NGA chart and a SHOM chart?

The SHOM (Service hydrographique et océanographique de la Marine) is France's hydrographic office. The NGA (National Geospatial-Intelligence Agency) is a U.S. agency specialising in geospatial information, with documentation covering numerous international regions.

The choice between these documents depends in particular on the navigation area, scale and type of documentation required.

Do NGA charts cover Norway?

NGA documentation includes charts covering various international maritime areas, including waters around Norway and the North Atlantic. For a specific voyage, the chart corresponding exactly to the required area and scale should be selected.

Are NGA charts suitable for offshore sailors?

Yes. They can be particularly useful for sailors planning international routes, offshore passages or long-duration voyages, provided that the appropriate charts and complementary documents are selected for each stage.

Where can I buy an NGA nautical chart?

NGA nautical charts can be sourced from specialist nautical chart and navigation-documentation retailers. Nautic Way offers a selection of international nautical charts and navigation publications for leisure sailors and professionals planning their voyages.