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S-57 Encoding Bulletins
S-57 Edition 3.1 Encoding Bulletins
EAtHC Letters
Circular Letters Last update: 21 October 2024
IBSC45 (2022)
The IBSC (The Board) acknowledges that these are challenging times due to the COVID-19 pandemic and encourages all institutions to prioritize the well-being of staff and students as they manage their particular circumstances to deal with disruptions to their normal teaching strategies for their recognized programme(s). The Board recognizes that teaching delivery strategies will likely need to be changed as institutions implement essential changes to comply with official directions from authorities. The Board requests that any modified teaching strategies seek to maintain the appropriate level of the applicable Standard and asks that significant changes be referred to the Board for its consideration of the need for guidance or assistance with continuing recognition. This acknowledgement should not be construed as the Board seeking to override national or local official directions.
IBSC43 (2020)
The IBSC (The Board) acknowledges that these are challenging times due to the COVID-19 pandemic and encourages all institutions to prioritize the well-being of staff and students as they manage their particular circumstances to deal with disruptions to their normal teaching strategies for their recognized programme(s). The Board recognizes that teaching delivery strategies will likely need to be changed as institutions implement essential changes to comply with official directions from authorities. The Board requests that any modified teaching strategies seek to maintain the appropriate level of the applicable Standard and asks that significant changes be referred to the Board for its consideration of the need for guidance or assistance with continuing recognition. This acknowledgement should not be construed as the Board seeking to override national or local official directions.
IBSC46 (2023)
IBSC46 Meeting Tokyo, Japan 15 - 26 May 2023
ENC Data Protection
Introduction The IHO Data Protection Scheme defines security constructs and operating procedures that must be followed by Data Servers (providers of data) and Data Clients (systems that use the data). The purpose of data protection scheme is to provide: 1. Piracy Protection: i.e. to prevent unauthorised use of data by encrypting the ENC information. 2. Selective Access: i.e. to restrict access to ENC information to only those cells that a customer has been licenced for. 3. Authentication: i.e to provide assurance that the ENC data has come from approved sources
Member States Gather in Monaco for the IHO Council Meeting
Delegations representing Member States of the International Hydrographic Organization (IHO) convened in Monaco last week for the annual meeting of the Council. Participants from 30 Member States sitting on the Council, along with 13 Observers, discussed a wide range of topics including plans for a potential IHO Infrastructure Centre in the Republic of Korea, secure information exchange, and the ongoing transition to digital ocean data systems.
UNCLOS and the international legal framework suitability for ocean activities discussed at ABLOS Conference
The 12th IHO-IAG ABLOS conference brought together participants from all over the world to discuss how the global regulatory framework and the United Nations Convention on the Law of the Sea (UNCLOS) addresses some of today's most pressing ocean-related challenges. Organised in partnership with the Qatari Standing Committee of the Convention on the Law of the Sea, the 280 participants learned about achievements of UNCLOS, challenges it faces in today’s international context, and gaps to be addressed. One question which emerged repeatedly was whether the convention was flexible enough to address modern issues.
Standards pending entry into force
This page provides a list of IHO standards and product specifications relevant to ECDIS that have been officially published but are not yet in force. These include standards that have been approved and released, but whose implementation dates are in the future, as defined in the S-100 Implementation Roadmap. Only standards that are intended to be implemented in ECDIS are listed here. Each entry includes the publication date, the scheduled date of entry into force, and any applicable notes regarding transition periods or dual-fuel operations. ECDIS manufacturers, hydrographic offices, and system integrators are encouraged to regularly consult this page to prepare for upcoming requirements under the S-100 framework and ensure timely compliance. Date of update: 9 May 2025

