Ships don't disappear over the horizon according to flat earthers but planes disappear and reappear at least 4 times a week over the South Pole??
The flat earth map is LITERALLY IMPOSSIBLE as shown by a single flight that happens usually 4 times a week (more coming!). Sydney to Santiago direct flights simply are not possible according to the flat earth map (without some magic disappearing/reappearing planes

)
Our friendly neighborhood flat earthers here still won't even attempt to answer this as it's been brought up a number of times. Frankly their refusal to acknowledge simple FACTS is why the vast majority of people think flat earthers are retards, have an agenda or are mentally unstable.
You could also ask them why Hurricanes that originate in the Northern Hemisphere spin the same direction EVERY TIME but hey they will probably ignore that as well.
Blah,blah,blah... yet another baller's typical gibberish talk. Irrelevant points for proving your imaginary ball earth.
Show me real footage of a curvizon, show me real footage of a curvature and show me real footage of a curved oceans or go home and research flat earth.
There is NO visible, measurable or observable curvature anywhere (except on nasa fake fantasy cgi cartoon pictures)
Earth is 71% water and water does not curve nor stick to a 1000+mph spinning ball. (When you try to put water on a ball, it falls off)
Here is your "proof" of a ball earth:
