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SAIHC Letters

MACHC Letters

(English & Spanish only)

NSHC34 (2021)

HSSC11 (2019)

IHO Hydrographic Services and Standards Committee (HSSC) 11th HSSC meeting 6-9 May 2019, Cape Town, South Africa Last Update: 12 October 2020

4th Council Meeting (2020)

IHO Secretariat, Monaco, VTC Event November 19th, 2020, 13:15 - 16:30 (UTC+1, CET) Last Update: 8 Nov 2021 Join the meeting via: https://global.gotomeeting.com/join/912159205

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.

Content

SPRWG

Content

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