International Millionth Map Multi-resolution Bathymetric Southern Ocean Tiles

Published: 2026-08-02

These tiles contain compilation of all bathymetric data from voyages, each surface will be named as follows 202122020_Nuy_256m_Pass_EPSG3395_EGM2008_SR48.tiff, where 202122020 is the voyage identifier, Nuy is the vessel/system type that was used to collect the bathymetric data, Pass is the HydroScheme Industry Partnership Program (HIPP) Statement of Requirements (SOR) depth banded surface resolution, 256m is the resolution of the surface, EPSG3395 is the coordinate system, EGM2008 is the datum and SR48 is the International Millionth Map tile extents. These surfaces are for the purpose of seabed classification, to improve charting and navigational safety. These datasets were processed to remove any noise, corrected to Earth Gravitational Model 2008 (EGM2008), then exported to provide an accurate depiction of the depth of water and seabed. The dataset is not to be used for navigation.