Search results

Achieving a Fully Mapped Ocean: A Call to Action

This interactive side event will look at solutions and how to drive momentum toward a fully mapped ocean. It will explore key opportunities and challenges across policy, finance, governance, technology, marine knowledge sharing, capacity building and more.

Achieving a Fully Mapped Ocean: A Call to Action

Terms and Definitions

Updated on 14 May 2025

Meetings

List of NHC Meetings Note: To access the meeting page, you'll need an IHO Portal account. If you don't have one yet, please follow the instruction provided at the link here to set up your account and gain access to the meeting page. Click the IHO Portal to get started.

AGL& RsWG

African Great Lakes & Rivers Sub-Working Group

S-57 Standards in Force

Introduction SOLAS regulations V/18 and V/19, requires that in order to achieve chart carriage requirements (in terms of SOLAS), the ECDIS equipment must conform to the relevant IMO performance standards. ECDIS units on board are required to comply with one of two performance standards (either IMO resolution A.817(19), as amended; or resolution MSC.232(82)), depending on the date of their installation.

ENC Portrayal S-57

Introduction IHO Publication S-52 was developed in conjunction with the IMO Performance Standards for Electronic Chart Display and Information System (ECDIS). It provides specifications and guidance regarding the issuing and updating of Electronic Navigational Charts (ENC), and their display in ECDIS in terms of symbols and colours.

S-57 ENC Portrayal

Introduction IHO Publication S-52 was developed in conjunction with the IMO Performance Standards for Electronic Chart Display and Information System (ECDIS). It provides specifications and guidance regarding the issuing and updating of Electronic Navigational Charts (ENC), and their display in ECDIS in terms of symbols and colours.