Vertical Offshore Reference Frames

Vertical Offshore Reference Frames (VORF) is a set of high resolution surface models, published and maintained by the UK Hydrographic Office, which together define a vertical datum for hydrographic surveying and charting in the United Kingdom and Ireland. == Tidal surface models == The following tidal and sea level surfaces are included: Chart Datum (CD) Lowest Astronomical Tide (LAT) Mean Sea Level (MSL) Mean Low Water Springs (MLWS) Mean High Water Springs (MHWS) Highest Astronomical Tide (HAT) Land datums including Ordnance Datums Newlyn, Belfast and Poolbeg The surfaces are modelled with respect to the terrestrial reference frame used for satellite navigation (GNSS) positioning, ETRS89.

Source: Wikipedia — Vertical Offshore Reference Frames (CC BY-SA 4.0)

Vertical Offshore Reference Frames

Vertical Offshore Reference Frames (VORF) is a set of high resolution surface models, published and maintained by the UK Hydrographic Office, which together define a vertical datum for hydrographic surveying and charting in the United Kingdom and Ireland. == Tidal surface models == The following tidal and sea level surfaces are included: Chart Datum (CD) Lowest Astronomical Tide (LAT) Mean Sea Level (MSL) Mean Low Water Springs (MLWS) Mean High Water Springs (MHWS) Highest Astronomical Tide (HAT) Land datums including Ordnance Datums Newlyn, Belfast and Poolbeg The surfaces are modelled with respect to the terrestrial reference frame used for satellite navigation (GNSS) positioning, ETRS89.

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Source: Wikipedia "Vertical Offshore Reference Frames" · CC BY-SA 4.0

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