WAS THIS THE WORLD MAP FROM 10 CENTURIES AGO?
A craft would be needed to travel beyond Antarctica, to see whats on the other side.
One practical solution would be a long range B747 with no passengers and with extra fuel tanks inside where seats would normally be. A 30000km range would be possible. With that kind of range and endurance, a small team of say 5 explorers, could make a useful trip.