Search results

Miscellaneous

MSDIWG Letters

Circular Letters 2025

EAtHC Region G ICCWG

SWPHC Letters

HDWG3 (2022)

Hydrographic Dictionary Working Group (HDWG 2022) tbc 2022, Europe - Location tbc

IHO Crowdsourced Bathymetry Initiative

The International Hydrographic Organization (IHO) has a long history of encouraging the collection of crowdsourced depth data to help improve humanity’s understanding of the shape and depth of the seafloor. For over a century, maps of the ocean floor were created from depth measurements collected by vessels as they journeyed across the oceans. These “passage soundings” enabled the creation of progressively more detailed seafloor maps and digital data grids. Recently, systematic surveys with specialized ships have contributed to greatly increasing available data. Unfortunately, despite the multitude of data that has been collected, to this day only 25% of the world’s ocean depths have been measured; the rest of the data used to compile seafloor maps are estimated depths.

Encoding Bulletins

S-57 Edition 3.1 Encoding Bulletins

USCHC47 Meeting (2024)

47th US/Canada Hydrographic Commission (USCHC) Meeting St. John’s NL, Canada. / 30-31 May 2024