S4 Regulations for International (INT) Charts and Chart Specifications of the IHO (English: Edition 4.8.0, October 2018 - Publication date: November 2018)

S49 Standardization of Mariners' Routeing Guides (Edition 2.1.0, September 2020)
S57 IHO Transfer Standard for Digital Hydrographic Data (Edition 3.1.0, November 2000) - Main Document
S-57 Component Documents:
Appendix A, Chapter 1 - Object Catalogue
Appendix A, Chapter 2 - Attribute Catalogue
Appendix A, Annex B - Attributes/Object Classes Cross Reference
Appendix B.1 - ENC Product Specification
Appendix B.1, Annex A - Use of the Object Catalogue for ENC - UOC (Ed. 4.2.0 April 2020)
Appendix B.1, Annex B - Examples of CRC Coding
Appendix B.2 - IHO Object Catalogue Data Dictionary Product Specification
Cumulative Maintenance Document No 8 (March 2002) - List of Clarifications, Corrections and Extensions for S-57 publications
S-57 Supplement No 3 to Edition 3.1 (June 2014 - incorporates the former Supplement No 2)
S 64 IHO Test Data Sets for ECDIS (Edition 3.0(.2), July 2017)
S 67 Mariners’ Guide to Accuracy of Depth Information in Electronic Navigational Charts (ENC) (Edition 1.0.0, September 2020)