There has never, ever — in the history of mankind — been a North-South circumnavigation of the so-called globe Earth. Either by sailing ship or by airplane. All so-called circumnavigations (a term which assumes a sphere) has been East-West. Wouldn’t you think that there would be some intrepid, modern-day explorer and adventurer who would want to have his or her name go down in history as the first person ever to do a North-South circumnavigation of the “planet” Earth?
There reason that there has never been such a North-South journey is because it is impossible. The Earth is not a globe. The Earth is not a sphere. And there is no “South Pole” that lies at the bottom of a “ball Earth.” What we have called East-West circumnavigations of the Earth — by early explorers like Magellan, etc. — were simply large circular trips around the North pole, which lies at the center of the Flat Earth.
This pictures below shows how it is possible to make an East-West voyage around the Earth, and yet make the mistake — or perhaps make the deliberate “mistake” — of thinking that you have traveled around a globe. If you started at any point and started traveling South, you would eventually hit Antarctica, which in the Flat Earth model is the ice wall that surrounds the entire circumference of the Earth.