The First Set of Operational Standards within the S-100 Framework Adopted by IHO Member States
The International Hydrographic Organization (IHO) member states have recently made a significant milestone by adopting the first set of operational standards within the S-100 framework. This framework enables the integration of diverse datasets within a single Electronic Chart Display and Information System (ECDIS).
Mariners can now benefit from combining various data layers such as Electronic Navigational Charts (ENCs), detailed depth information, and dynamic data on water level and currents to enhance situational awareness and decision-making at sea.
The adoption of these operational standards signals a new era for coastal states to offer official products and services based on these standards. This development is expected to have profound implications for ocean data collection and sea surveys as the new products will require enhanced data for their full potential to be realized.
Magnus Wallhagen, chair of the Hydrographic Services and Standards Committee, highlighted that implementing S-100 will bring about four significant benefits: increased safety, enhanced efficiency, optimized loading capacity, and reduced environmental impact, aligning with the IMO greenhouse gas Strategy. Additionally, S-100 implementation is a critical step towards achieving autonomous navigation and improved cyber security.
Key S-100-Based Product Specifications
Following the adoption of Edition 5.2.0 of S-100 in June 2024, operational editions of key S-100-based Product Specifications have been approved in December 2024. These specifications include:
- S-101: Electronic Navigational Charts (ENCs)
- S-102: Bathymetric Surface
- S-104: Water Level Information
- S-111: Surface Currents
- S-129: Under Keel Clearance Management
These standards are the result of over 20 years of collaborative efforts by the IHO secretariat, member states, and the Hydrographic Services and Standards Committee (HSSC) along with its working groups and project teams. They are now accessible via the IHO S-100 Geospatial Information (GI) Registry and the IHO website.
The development of the remaining Phase 1 Product Specifications continues, with Navigational Warnings (S-124) and the Catalogue of Nautical Products (S-128) being submitted for HSSC endorsement. Approval for these standards is anticipated in early 2025.
Future Focus on Phase 2 Product Specifications
Phase 2 will focus on Product Specifications for route planning, with four key standards:
- S-122: Marine Protected Areas
- S-123: Marine Radio Services
- S-127: Marine Traffic Management
- S-131: Marine Harbour Infrastructure
The IMO’s adoption of the revised Resolution MSC.530(106) on Performance Standards for ECDIS at its 108th Session in May 2024 underscores the global commitment to S-100 implementation. From January 1, 2026, S-100 ECDIS will be legally required for use, with a transition period until January 1, 2029, after which all new systems must comply with the updated IMO ECDIS Performance Standards.