SeaZone Hydrospatial

SeaZone Hydrospatial was launched in November 2005 at AGI2005 as the first true digital marine geographic information product and represents a sea-change in the way marine data is used for activities other than navigation.

SeaZone Hydrospatial is in its infancy and is under continual development and improvement both in form, content and structure. Initially, much of the information that SeaZone Hydrospatial contains is re-engineered from data captured by UKHO from paper charts for the production of ENCs (Electronic Navigational Charts).

Increasingly though, more will be based on improved source data sets (e.g. wrecks) and on totally new data sets (e.g. detailed bathymetry from digital surveys) that depict the real world environment and provide key base reference information to be established.

• Increasingly based on source data including digital survey data, replacing data captured from nautical charts
• Data re-engineered for storage in spatial databases (e.g. Oracle 10G)
• Creating metadata, feature dictionaries and schema compliant with converging standards
• Adopting agreed base reference shorelines
• Helping to resolve inconsistencies at the land-sea interface in collaboration with OSGB
• Providing base reference information to which other objects, features and properties can be linked via topographical and topological identifiers.

Hydrospatial Future Releases.

Data Content and Scale

SeaZone Hydrospatial is provided in six individual Topic Layers. Each Topic Layer is broken down into Themes, which in turn contain Feature Types.

SeaZone Hydrospatial Content.

The Bathymetry and Elevation Topic Layer is available in two scale bands:

• Bathymetry and Elevation comprising best available scale up to 1:2500
• Bathymetry and Elevation Offshore comprising best available scales up to 1:100,000

The other five Topic Layers comprise a combination of scale independent source data and best or largest scale charted data available.

In creating SeaZone Hydrospatial, SeaZone has complied with internationally recognised standards where they exist. The dataset’s structure is founded on the International Hydrographic Organisation’s (IHO) standard for hydrographic data (IHO S-57). However, SeaZone Hydrospatial includes many more Feature Types than is required for navigational charting (and therefore in the Charted Vector product). Consequently, SeaZone has extended the S-57 Feature Catalogue for SeaZone Hydrospatial to include the NATO standard for AML (Additional Military Layers). In addition, to take account of real world objects that are not included in either S-57 or AML, SeaZone has created its own extended Feature Catalogue for marine geographic information. For more information on marine data standards look in the reference zone.

Please note that soundings are not included within SeaZone Hydrospatial. Gridded bathymetry is supplied to replace these in the Bathymetry & Elevation Topic Layer. If soundings data is required for modelling purposes then please refer to SeaZone Digital Survey Bathymetry.

Coordinate System

SeaZone Hydrospatial is supplied as standard in:

Other datums and projections are available on request and may be subject to additional costs.

Format

SeaZone Hydrospatial is supplied with a GIS Project so that the data can be displayed fully symbolised and attributed on opening, saving project time and costs.

Gridded Bathymetry is supplied as either ESRI Grids, ASCII grids (.asc) or MapInfo Grids (.mig). Supply will vary depending on the users GIS system. Layer files are also supplied for use in ESRI and these should be loaded rather than the raw grid files.

SeaZone is currently looking to supply data in ESRI Personal Geodatabase and OGC SQL92 Geodabase formats in the future. If you have a requirement for these formats or wish to load SeaZone data onto a relational database such as Oracle Spatial or ESRI ArcSDE, please contact us or state your requirement in your Quotation Request Form.

Sample Data CD Request Form

Quotation Request Form

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