The waters bounded by a line commencing from a point at 50°00'S latitude and 40°00'E longitude; thence due north to 45°00'S latitude; thence due east to 60°00'E longitude; thence due south to 50°00'S latitude; thence running due west along this parallel to the point of departure. This geographical area was superseded in 2016 when the boundary between Subareas 58.6 and 58.7 changed.