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Cartas Circulares 2025

Circular Letters 2025

Sub-Groups

ECS PT meetings

List of ECS Project Team Meetings

The digital twin of the navigable waters: paving the way for e-navigation

The maritime domain is in the midst of radical changes which will propel navigation forward and open a realm of new possibilities. These transformations will pave the way for e-navigation and autonomous shipping aiming to improve safety, efficiency and sustainable vessel operations. At the core of these transformations is the digital twin of navigable waters.

Guidance on use of satellites to gather depth data

The IHO has published the first “Satellite-Derived Bathymetry Best Practice Guide” for the hydrographic community. The new document provides an overview of methods and factors to consider when applying SDB to map shallow coastal environments.

Meetings

List of EAHC meetings

Basic PT Documents

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.