There's a decent Wikipedia entry [1] on the Southern Ocean that provides a "Definitions and use" section listing how the ocean's been defined/redifined over tim

There's a decent Wikipedia entry [1] on the Southern Ocean that provides a "Definitions and use" section listing how the ocean's been defined/redifined over time, and as by Australia: Pre-20th century, 1928 delineation, 1937 delineation, 1953 delineation, 2002 draft delineation, Australian standpoint. [1] https://en.wikipedia.org/wiki/Southern_Ocean https://en.wikipedia.org/wiki/Southern_Ocean