IHO PUBLICATION S-23
Limits of Oceans and Seas 

Draft 4th Edition, 1986

Important Notice: This draft 4th edition of S-23 was developed during the 1980ís. It was submitted to IHO Member States in 1986, but never received their approval. It is a working document only.

The 1986 draft 4th edition of S-23 was organized in regional chapters as in the table below.