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MS Online Chart Catalogues
The following tabe provides links to IHO Member States online Chart Catalogues. IHO Members states are encouraged to provide information concerning their online chart catalogues to the IHO Secretariat (info@iho.int) so that this information can be included below.
IHO Meetings and Events Calendar
The IHO Calendar contains information about meeting and events that are of interest to Member States, Industry Stakeholders, and Non-Governmental Organizations. The calendar events have been grouped and colour coded as follows;
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
ENCWG
ENC STANDARDS MAINTENANCE WORKING GROUP
GEBCO
JOINT IHO-IOC GUIDING COMMITTEE FOR THE GENERAL BATHYMETRIC CHART OF THE OCEANS
International Organizations Documents related to the IHO
Some relevant documents of the following International Organizations have been included in this section.
CSB Tools Workshop 2026
Have you considered how your boat's depth soundings could contribute to global databases or local maps? Or how your hardware or software company could support crowdsourced bathymetry (CSB) efforts? If so, and whether you are exploring how to collect and use this data or are already involved in CSB, this workshop is for you!
A4 Industry Exhibition
A key element of the IHO Assembly is the Industry Exhibition, which provides the private sector with a unique opportunity to showcase their technology and expertise to the global hydrographic community, all in one place.
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
