Take S-100 data above and beyond navigation

S-100 was always designed to be universally interoperable. Explore what could become possible when maritime data meets space-based capabilities.

Explore the data sets

Turn your idea into a commercial opportunity

Do you have a business idea that combines S-100 data with space-based capabilities to address a customer need?

Developed in collaboration between the UK Hydrographic Office and the French Hydrographic and Oceanographic Service (Shom), these data sets form a cross-Channel testbed designated by the IHO to investigate how S-100 standards can be applied in practice. They have been created and exercised through live and simulated sea trials to support industry testing and interoperability.

The UK Hydrographic Office is supporting the European Space Agency's (ESA) S-100 Universal Hydrographic Data Model Thematic Campaign which invites companies to explore commercially viable services combining S-100 with satellite Earth observation, communications and/or navigation.

Explore the support available through ESA's Business Applications and Space Solutions (BASS) and find out how to express your interest.

Watch the campaign launch webinar on 18 November 2026. Visit ESA's campaign page for full details including information about the opportunity, funding, eligibility and how to apply.

Visit ESA campaign page

What could you build with S-100?

S-100 was designed for interoperability, providing a common framework for different types of hydrographic and maritime information. That creates opportunities to combine data such as bathymetry, water levels and surface currents with other data and technologies.

Satellite connectivity, including low Earth orbit (LEO) networks, could help deliver increasingly data-rich S-100 services between ships and shore, including beyond terrestrial network coverage. This creates opportunities to explore how maritime information is accessed, updated and used.

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What could become possible when this information meets satellite Earth observation, communications or navigation?

ESA’s S-100 campaign invites companies to explore commercially viable services that address customer needs. Ideas could support safer navigation, more efficient vessel and port operations, environmental monitoring, maritime security or automated systems.

These are starting points. Your application could take S-100 in a different direction.

Learn more

Discover our S-100 data sets

The UKHO and French hydrographic office (Shom) have created S-100 data sets from Southampton and Portsmouth across the Channel to Jersey and down to the Port of St.Malo. These trial data sets have been exercised through live and simulated sea trials to support industry testing and interoperability.

Please note: This data is still under development and is for testing purposes only. It must not be used for navigation.

By downloading the ADMIRALTY S-100 trial data sets, you agree to be bound by the data exploration licence terms and conditions.

The S-100 trial data sets contributed by the Shom are subject to the terms of the SHOM Products Evaluation and Exploration License.

S-101 Electronic Navigational Charts (ENC)

S-101 is the product specification for ENCs under the S-100 framework.

The S-101 ENC trial data set has been produced to support ECDIS manufacturers and partners as they develop and test S-100 compatible systems. The coverage aligns with the existing S-57 GB ENC scheme to aid comparison, conformity assessment and interoperability testing alongside other S-100 products.

Download S-101 data

S-102 Bathymetric surface

S-102 defines high-resolution bathymetric surface data in a regular grid structure.

The S-102 trial data set contains detailed seafloor depth information that can be overlaid with other S-100 layers. When used within compatible systems, this data could support improved understanding of seabed features and depth variation, particularly in confined or complex waterways.

Download S-102 data

S-104 Water level information for surface navigation

S-104 provides water level information for surface navigation.

The S-104 trial data set includes gridded forecast water levels and astronomical tidal height prediction points. Within compatible systems, this data may support route planning and port entry decision-making by enabling dynamic representation of changing water levels.

Download S-104 data

S-111 Surface currents

S-111 defines surface current information to an approximate depth of 25 metres.

The S-111 trial data set describes surface current speed and direction, provided in grid or point coverage. When integrated with other S-100 layers, this information could support enhanced situational awareness during voyage planning and navigation.

Download S-111 data

S-124 Navigational warnings

S-124 is the product specification for navigational warnings under the S-100 framework.

The S-124 trial data set is designed to support testing of machine-readable navigational warnings within S-100 compatible systems, enabling structured display and integration alongside other S-100 data layers.

S-128 Catalogue of nautical products

S-128 defines a standardised catalogue of nautical products, enabling consistent discovery, management and exchange of product metadata within the S-100 environment.

The S-128 trial data set supports testing of catalogue services and interoperability between data producers, distributors and end systems.