HydroSpatial One

HydroSpatial One is the first and original "off-the-shelf" authoritative digital marine mapping, engineered and maintained from raw material from hydrographic offices and other agencies managing marine data content.

HydroSpatial One provides reference information comparable with land mapping and is designed for easy access and cost effective use in desktop and WebGIS, satisfying the majority of user needs and applications.

HydroSpatial One consists of six Topics sub-divided into Themes, which in turn contain Feature Types. It is possible to purchase an individual Topic or all Topics for your area of interest.

The following provides descriptions of the content and data sources within each Topic.

BE – Bathymetry & Elevation

Bathymetry and Elevation is the natural shape of the Earths’ surface on land and under the sea. The dataset includes depth and height contours and a digital elevation model reduced to chart datum. Also included are depth areas and intertidal areas showing cartographic representations of areas of water depth.

NP – Natural & Physical Features

The Natural and Physical Topic includes the natural topography of the coastal and marine environments including the biological, physical and chemical features within it. Included in the data is the type and landscape setting of the marine environment including the geology, seabed, water column and coastal landforms. Also included are biological and physical components include biota, habitats, fish spawning and nursery areas, non-gravitational current streams, rocks and some human impacts are included such as dams, canals and dykes

SO – Structures & Obstructions

The Structures and Obstructions Topic includes the human and physical structures and obstructions including oil and gas wells, pipelines and cables. Also included are physical human structures of a more general socio-economic purpose (e.g. general obstructions, buoyage).

SE – Socio Economic & Marine Use

The Socio Economic Topic can be defined as specified areas where one or more activities have been designated, are known to occur, or are restricted. This layer comprises largely of non-physical human boundaries defining areas or zoned of economic or social importance such as military areas, wind farm sites, navigation zones, dredging areas, fishing areas and national boundary limits.

CE – Conservation and Environment

The Conservation and Environment Topic comprised of designated boundaries for the purpose of conservation and environmental protection of natural and cultural heritage. Included are boundaries for designations and management, e.g. SSSI, SAC, SPA and other conservation designations (archaeological sites, shellfish beds, monitoring and assessment points, e.g. bathing waters and nitrates).

CO – Climate & Oceanography

The Climate & Oceanography Topic consists of tide and current information.

Technical Specification

Purpose:	Marine mapping in six defined Topics
Standard Supply Formats:	Vector: ESRI File Geodatabase; ESRI Personal Geodatabase; ESRI .shp; MapInfo .tab Grid: ESRI ASCII; binary (non-standard formats available on request)
Build Frequency:	Four updates per year
Supply Extents	Tiles of 1/2 degree x 1/2 degree
Spatial Resolution	Variable: Scale-less GPS positions and Scales greater than 1:1,500,000.
Spatial Coverage	Regional: Eastern Atlantic, Irish Sea, North Sea, English Channel and Channel Islands (including the extent of the UK and Ireland’s Continental Shelf).
Input/Source Data	Charted Content: Captured and Managed to IHO S-57; Source data layers supplied by UKHO; CCW; NIEA; NE; SNH; TCE; UKDEAL; BGS; BODC; JNCC
Coordinate Reference System: Horizontal	Geodetic WGS84 (urn:ogc:def:crs:EPSG::4326)
Coordinate Reference System: Vertical	Chart Datum (CD) – representing either Lowest Astronomical Tide (LAT); or Mean Sea Level (MSL).
Symbology	HydroSpatial One symbology and workspaces
Supporting Information	MEDIN Discovery Metadata: One metadata record (.xml/.html) User Guide Feature and Attribute Catalogue Application Schema Coverage Maps - Geo-PDFs / GIS Extent files showing the Product extent