S-100 Universal Hydrographic Data Model

An international standard developed by the International Hydrographic Organization (IHO) for the management, exchange, and interoperability of hydrographic and marine geospatial data.

The S-100 Universal Hydrographic Data Model is a comprehensive framework designed to modernise and standardise the handling, sharing, and use of hydrographic and marine geospatial data in the maritime domain. Developed by the International Hydrographic Organization (IHO), S-100 serves as the foundation for a wide range of applications, including electronic navigational charts (ENCs), marine spatial planning, environmental monitoring, and maritime safety information. It is a successor to the S-57 standard, offering enhanced flexibility and scalability to accommodate evolving technological and operational needs.

S-100 is built on the ISO 19100 series of geographic information standards principles, ensuring compatibility with broader geospatial data systems. It supports various data types, such as vector, raster, and gridded data. It allows for integrating real-time data streams, such as Automatic Identification System (AIS) information and tide or current predictions. This adaptability makes S-100 particularly valuable for e-navigation initiatives, which aim to improve maritime operations’ safety, efficiency, and sustainability.

The modular model enables the creation of specific product specifications tailored to different use cases, such as S-101 for ENCs or S-102 for bathymetric surface data. By fostering interoperability between diverse datasets and systems, S-100 facilitates seamless data exchange among hydrographic offices, mariners, and other stakeholders in the maritime industry. Its adoption is expected to advance digital transformation and innovation within the marine sector.