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Boundary of an entity controlled by an administrative authority, this entity can be composed of several areas; international boundary and national subdivisions up to the lowest level (municipality level). In sea area boundaries are only portrayed if they are official (legal)...
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Polygon file of the Boundaries Seawater Area taken from the OSi National 1:250k Map Of Ireland
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An area controlled by an administrative authority. National territory and all national subdivisions up to fifth order.
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Military, commercial and leisure airports and airfields with area ≥ 0.4 km²
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An area containing a concentration of buildings and other structures.
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Length ≥ 125 meters. Have to be connected to a ferry station.
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Only operational hard paved runways of airports (portrayed as an area feature) are portrayed. Runways cannot be portrayed stand-alone without the airport they belong to. Runway is portrayed only with line feature. The length of the line feature should correspond to the real...
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Start and end points of watercourses as well as confluences (Confluence, Source, Mouth, Boundary)
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Water with area ≥ 0.4 km². Smaller lakes or ponds can be portrayed when significant to determine land occupation. Lakes being part of the water network have to be topologically connected to watercourses.
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A point where a railway crosses a road at the same level. The level crossing will be associated both to the road and railway network.
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All dams on watercourse portrayed as a single line
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Landmark feature, major power stations
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Usually the sea or ocean area.
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The vertical datum for the shoreline should be mean sea high water in tidal maritime zone or normal water.
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Landmark feature or be of national or tourist interest
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Area ≥ 0.4 km² The point representation of a port collected as an area feature that provides the intermodal connection to the road or railway network.
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Area < 0.4 km² Military, commercial and leisure airfields (Reference: GISCO Airport database)
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The landmask area is enclosed by the coastline/shoreline and sea limit. It must not depict any lakes or other inland waters. Landmask area serves as reference layer for geometrical coherence between layers
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Restricted to roads connected at different level crossing as i.e. at intersections of motorways or at exits of motorways.
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All the stations and stopping places used for passenger traffic and/or freight traffic.
Derilinx
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