 In 1928, the first edition of the International Hydrographic Organization's (IHO) "Limits of Oceans and Seas" publication included the Southern Ocean around Antarctica.The Southern Ocean was delineated by land-based limits - the continent of Antarctica to the south, and the continents of South America, Africa, and Australia plus Broughton Island, New Zealand in the north.The detailed land-limits used were Cape Horn in South America, Cape Agulhas in Africa, the southern coast of Australia from Cape Leeuwin, Western Australia, to South East Cape, Tasmania, via the western edge of the water body of Bass Strait, and then Broughton Island before returning to Cape Horn.