Ports and terminals:
McMurdo, Palmer, and offshore anchorages in Antarctica
note: few ports or harbors exist on southern side of Southern Ocean; ice conditions limit use of most to short periods in midsummer; even then some cannot be entered without icebreaker escort; most Antarctic ports are operated by government research stations and, except in an emergency, are not open to commercial or private vessels (2007)

Transportation - note:
Drake Passage offers alternative to transit through the Panama Canal