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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
MSDIWG
MARINE SPATIAL DATA INFRASTRUCTURES WORKING GROUP (MSDIWG)
International Organizations Documents related to the IHO
Some relevant documents of the following International Organizations have been included in this section.
Women in Hydrography: New Data Reveal Gains in Leadership, Gaps in Workforce Representation
The latest data on the number of men and women working in hydrography have been released. With 51 IHO Member States answering the EWH 2025 survey, the results reveal advancements in some areas but also challenges.
IHO Disclaimer – Integrated Platform Version
Version 2.0 – July 2025
