Ferry Link

A Ferry Link is a linear spatial object which represents the connectivity of a vehicular or pedestrian ferry route across a body of water. A Ferry Link will only be captured where both terminals are located within Great Britain and where there is a timetabled service which is available to the public. Ferry routes with a terminal located outside of Great Britain are not captured (for example, Dover to Calais) and neither are ferry routes where the service is not available to the public.

Temporal filtering

The earliest date on which you can request a one-off snapshot of a date in the past for data in this feature type is 29 September 2022.

Any data temporally filtered earlier than the specified earliest date noted above for the data schema version may contain data inconsistencies.

Feature type attributes

The following sub-sections provide details about the attributes included with this feature type, their data types in the different output formats, and other important metadata about them.

Loading OS NGD CSV files into databases

Comma-separated values (CSV) file format is universally supported for easy ingestion into all major database products. Before loading OS NGD data contained in CSV files into a database, it is necessary to create relevant tables. Data definition language (DDL) statements for PostgreSQL, SQL Server and Oracle can be accessed in our OS NGD Resources GitHub repository.

For instructions on loading CSV files, see the Getting Started with CSV guide.

osid

Primary identifier for the feature. The OSID is a Globally Unique Identifier (GUID) and requires no centralised authority to ensure uniqueness. Note that the same OSID can occur in more than one feature type when a single feature is represented multiple times in the OS NGD.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Max Length: 36

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

toid

Topographic Identifier (TOID) of the feature, as published in the OS MasterMap suite of products.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: true

• Max Length: 20

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

versiondate

Date when the version was last updated.

• Data Types: String (GeoJSON), Date (GPKG), Date (CSV)

• Nullable: false

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

versionavailablefromdate

The date this version of the feature became the latest version.

• Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)

• Nullable: false

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

versionavailabletodate

The date this version of the feature was superseded by an update or ceased to exist.

• Data Types: String (GeoJSON), DateTime (GPKG), DateTime (CSV)

• Nullable: true

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

changetype

The type of change that generated a new version of the feature.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Code List Name: changetypevalue
• Max Length: 50

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

geometry

3D geometry for the feature.

• Data Types: Geometry (GeoJSON), Geometry (GPKG), WKT (CSV)

• Nullable: false

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

• Geometry Type: LineString

geometry_length

The measured length of the geometry in metres.

• Data Types: Number (GeoJSON), Float (GPKG), Real (CSV)

• Nullable: false

• Precision: 15

• Scale: 6

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

theme

The OS NGD theme to which this feature belongs.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Code List Name: themevalue
• Max Length: 40

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

description

A single descriptive value intended for a quick understanding of what the feature represents.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Code List Name: ferrylinkdescriptionvalue
• Max Length: 10

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: Yes

• Data Schema Version: 1.0

fictitious

Indicator that the geometry of the link is a straight line with no intermediate control points, unless the straight line represents the geography in the resolution of the data set appropriately.

• Data Types: Boolean (GeoJSON), Integer (GPKG), String (CSV)

• Nullable: true

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

vehicularferry

An indicator of whether this ferry link represents a ferry that can be used by vehicles.

• Data Types: Boolean (GeoJSON), Integer (GPKG), String (CSV)

• Nullable: false

• OS NGD API – Features Filterable: Yes

• OS Select+Build Filterable: Yes

• Data Schema Version: 1.0

routeoperator

The URL of the operator of this ferry route.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: true

• Max Length: 250

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: Yes

• Data Schema Version: 1.0

startnode

The node coincident with the first vertex of the geometry attribute of the link feature.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Max Length: 36

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0

endnode

The node coincident with the last vertex of the geometry attribute of the link feature.

• Data Types: String (GeoJSON), String (GPKG), String (CSV)

• Nullable: false

• Max Length: 36

• OS NGD API – Features Filterable: No

• OS Select+Build Filterable: No

• Data Schema Version: 1.0