Digital Charts
Thomas Gunn Navigation Services Ltd have a dedicated digital department trained in all aspects of digital products and services to assist with the transition from paper to digital navigation and provide you with the most appropriate digital solution.
Thomas Gunn Navigation Services are official distributors for a wide range of electronic charts, however our core formats are S57 Electronic Navigation Charts (ENC), Arcs Raster Charts and C-Map Vector Charts. Each format has its own advantages and disadvantages and the final choice often depends on the software in use, personal preference, budget, chart coverage required and the requirement for regular chart updates.
Available Digital Chart Types:
AVCS - ADMIRALTY VECTOR CHART SERVICE
Overview
The Admiralty Vector Chart Service (AVCS) is a comprehensive, official, world-wide, SOLAS carriage compliant vector chart service. The Service brings together Electronic Navigational Charts (ENCs) from national Hydrographic offices around the world and new ENC coverage produced by UKHO in co-operation with Foreign Governments to provide comprehensive, official, worldwide coverage.
The Admiralty Vector Chart Service only contains ENC data that meets Safety of Life at Sea (SOLAS) Carriage Requirements for use within Electronic Chart Display and Information Systems (ECDIS).
AVCS provides cost-effective coverage of the world's major shipping routes, avoiding the need to purchase unnecessary data. The Service is sold in Transit Folios, Regional Folios, Port Folios and Inividual ENC Units, offering the ultimate in purchase flexibility.
Licencing
AVCS licences are for a 12 month period, within which you will hold an AVCS media pack, containing world-wide AVCS data, receive weekly updates to the AVCS data set and have access to online updates through the Admiralty Updating Service. Within the licence period, AVCS Folios and ENC Units can be added for periods of three, six, nine or twelve months, where data supply agreements allow. This offers maximum choice and the flexibility to match your chart holdings to your operational patterns.
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ENC - ELECTRONIC NAVIGATION CHARTS
Overview
ENCs (Electronic Navigational Chart) are vector charts, standardized as to content, structure and format, issued for use with ECDIS on the authority of government authorized hydrographic offices (HOs).
ENCs contain all chart information necessary for safe navigation and may also contain supplementary information.
ENCs from Primar meet IMO SOLAS charts and carriage requirements when kept up-to-date and used on type approved ECDIS with appropriate backup.
Licencing
ENC licences are for a 12 month period, within which you will hold a full chart CD media pack, containing all available ENC Chart data, receive weekly updates to the ENC data set. Within the licence period, ENC coverage can be added for periods of three, six or twelve months, where data supply agreements allow. This offers maximum choice and the flexibility to match your chart holdings to your operational patterns.
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ECDIS - ADMIRALTY ECDIS SERVICE
Overview
The Admiralty ECDIS Service combines the most accurate official vector and official raster electronic charts available to deliver global electronic chart coverage in a single, easy to manage package.
The Admiralty ECDIS Service provides ENCs where available and ARCS charts where not. This IMO-approved combination enables shipping companies to reap the benefits of ENCs while coverage is still growing, and helps to make the most of investment in Electronic Chart Display and Information Systems (ECDIS).
Chart coverage in the ECDIS service is provided in 38 geographic areas - each geographic area containing ENCs, where available, together with comprehensive ARCS coverage. The geographic areas have been designed to simplify both the ordering process and pricing, whilst minimising the number of ENCs and ARCS charts the vessel requires.
Within each area there are up to three separate folio categories: Transit Folio, Standard Folio and Full Folio. These folio categories have been designed to appeal to passenger liners, container ships, crude oil tankers, product tankers, chemical carriers, gas carriers and UK ferries. It is anticipated that these folios will not be as well suited to naval vessels, non-SOLAS tonnage, bulk carriers, coastal traders or pleasure craft.
Licencing
ECDIS licences are for a 12 month period, within which you will hold a complete set of Base disks containing every ENC and ARCS chart available within the service. Access is provided by special folio 'unlock' (permit) keys, allowing you to carry global coverage whilst only paying for the level of folio coverage you require. Significantly, this allows the flexibility to upgrade coverage during a licence period.
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ARCS - ADMIRALTY RASTER CHART SERVICE
Overview
ARCS is the UKHO's paper chart portfolio presented in a digital format. Over 3000 charts provide extensive, official coverage of international commercial shipping routes, main ports and harbours at a comprehensive range of scales. ARCS charts are licensed on a chart by chart basis to give you maximum flexibility - you only have to pay for the charts you need.
All ARCS charts have the same familiar image and use the same internationally recognised symbology as Admiralty paper charts - making them the easy first step from chart table to electronic navigation.
Licencing
ARCS licences are for a 12 month period, within which you will hold an ARCS media pack, containing world-wide ARCS data, receive weekly updates to the ARCS data set and have access to online updates through the Admiralty Updating Service. Within the licence period, AVCS charts can be added for periods of three, six, nine or twelve months, where data supply agreements allow. This offers maximum choice and the flexibility to match your chart holdings to your operational patterns.
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C-MAP JEPPESEN Unofficial VECTOR CHARTS
Overview
C-MAP Jeppesen is a provider of a global electronic chart service designed to meet the differing needs of both the occasional leisure user and merchant marine vessels operating on a world-wide basis.
C-MAP has the world's largest commercially available database of over 20,000 chart files. These files are based on paper charts from Hydrographic Offices which are vectorised using DNV-approved production tools. At present, over 90 leading manufacturers of navigation systems can read and display the above chart data.
The C-Map database is intended for use on advanced electronic charting and navigation systems such as ECS and ECDIS, with the prosessing and display power necessary to exploit the full potential of these advanced products.
Significantly enhance your Electronic Chart System and Electronic Chart Display and Information System (ECDIS) with C-MAP Professional's global vector chart database.
Licencing
C-Map chart coverage is devided into zones, areas and cells. The world is split into 9 zones. Each zone is subdivided into areas. Zones or areas are based on a 12 month subscription period, within which you will hold a full C-Map chart CD media pack, containing all available C-Map coverage. Updates are issued on CD every 3 months, however monthly updates are also available if required. Additional Zones or Areas can be added to the licence during the subscription period. This offers maximum choice and the flexibility to match your chart holdings to your operational patterns.
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TRANSAS - UNOFFICIAL TX-97 VECTOR CHARTS
Overview
The Transas World Chart collection consists of charts digitized according to the highest standard and level of accuracy. Transas charts are Vector based charts produced from the original paper chart and can only be read by ECDIS or ECS based upon the Transas kernel. The Transas electronic chart database provides world-wide coverage and is updated with Notices to Mariners issued by Hydrographic Offices of different countries.
Licencing
Transas TX-90 chart data is purchased for a one off fee and updates are purchased separately via annual subscription or as and when required. Update CD's are issued every 2 weeks.
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AWCS - Admiralty WebChart Service
Overview
The Admiralty WebChart Service will give you instant access to the latest official charts direct to your desctop. Ideal for shore based users who demand up-to-date data.
Licencing
Admiralty WebChart Service is available on a license basis through your Admiralty Distributor. Licenses are flexible and can be purchased for durations of 3, 6, 9 or 12 months. Packs of licenses can be purchased for 1, 5, 20 or 100 users.
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DIGITAL LEISURE CHARTS
Admiralty Arcs Skipper Charts
An ever-expanding range of digital products and services complement the world famous Admiralty paper chart, and the Admiralty Raster Chart Service (ARCS) is now used by the giants of the commercial shipping world as well as the Royal Navy and the RNLI. In 1996, ARCS became available to the leisure mariner in the form of ARCS Skipper, a service specifically designed to meet the requirements of safe navigation whether racing or cruising.
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CMAP Leisure Charts
Over the past twenty years, more than one million navigators around the world have put their trust in C-MAP by Jeppesen electronic charts - making their time on the water safer, easier and more enjoyable. C-MAP vector-based charts offer unrivaled navigational detail and are compatible with most brands of chart plotters and PC-based navigation systems. Exclusive value-added data, above and beyond base navigation charts, make C-MAP by Jeppesen information solutions indispensable.
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