• Tonga Map Grid

  EPSG:5883
  Area of use: Tonga - onshore and offshore.
  

• Pacific Disaster Center Mercator

  EPSG:3831
  Area of use: Pacific Ocean
  

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• Coordinate reference systems (12)

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•    Geodetic (2)
•    Geodetic 3D (3)
•    Geocentric (4)

• Operation (4)

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• Datum (1)

•    Geodetic (1)

• Area (4)