About Data
Historically, the only data available to those working in non-navigational capacities within the marine environment and coastal zone has been paper navigational charts and other publications. These sources represent only a subset of the data available, depicting information only significant for navigation and safety at sea, making them easy to use and assimilate for the navigator, but deficient for many other purposes.
Navigational charts in digital form are now widely available, as ARCS (Admiralty Raster Chart Service) and ENC (Electronic Navigational Chart). However, these are direct copies of the paper chart from which they were derived and hence suffer from the same shortcomings as their paper counterparts. Furthermore, these products are encrypted and meant only as input to ECDIS (Electronic Chart Display and Information Systems) that are type approved by the IMO (International Maritime Organisation).
The misuse of these digital navigational charts for activities unrelated to navigation is being discouraged by hydrographic offices and the IHO (International Hydrographic Organisation).
For additional clarification on licensing and use of navigational data for please refer to the UKHO Navigational Products Usage Statement.
Creating a Sea-Change
The limitations of historically accessible data and the introduction of new technologies has been the driving force behind SeaZone developing and making marine data easily accessible for use in geographic information systems (GIS), since June 2003.
- SeaZone offers a range of data products for varying applications, supplied under licence in various formats for immediate use in GIS
- SeaZone only delivers data from leading authoritative sources, thereby providing you with highest confidence in data integrity
- SeaZone data is sourced directly from the data owner, so it is the most up-to-date data available. Annual or quarterly updates are provided depending on your requirements, so you can ensure data remains current
- All data orders are provided with supporting information that you will need to start using the data including SeaZone fonts, symbology and style files
SeaZone data will assist in providing the best available information to those working within the marine environment and coastal zone, giving benefit opportunities across a wide range of environmental and other activities unrelated to navigation, including:
- greater project efficiency
- costs reductions
- reduced risk
- improved decision making.

