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S-52 Portrayal Bulletins

Introduction S-52 provides specifications and guidance regarding the issuing and updating of Electronic Navigational Charts (ENC), and their display in ECDIS. This IHO Publication was developed in conjunction with the IMO Performance Standards for Electronic Chart Display and Information System (ECDIS).  The S-52 Chart Presentation Bulletins are placed here to communicate information concerning portrayal and update issues related to ECDIS and ENC production. They may influence ENC producers´ encoding practices and should be consulted in conjunction with the S-57 Encoding Bulletins. Each Bulletin explains a particular ECDIS portrayal issue, recommended procedures for addressing the issue and the consequences of not following the recommended procedures.

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. 

SPRWG

ENCWG

ENC STANDARDS MAINTENANCE WORKING GROUP

GEBCO

JOINT IHO-IOC GUIDING COMMITTEE FOR THE GENERAL BATHYMETRIC CHART OF THE OCEANS

South-East Pacific HC

ROPME Sea Area HC

South West Atlantic HC

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!