Coolpix 900 camera debunking the curvature in 16 seconds, by the way: the best way to see this is in reverse... (starting at the end, and going to the beginning) ... then first , there is no ship visible on the horizon... Did it dissappear over (or behind) the horizon? No. Evidence is that when you zoom in the ship reappears, no matter how far out it is, given the right atmospheric conditions, the ship will be visible from 100 miles or more ... Just like lighthouses which have been reported to be visible at over 100 miles distance (see link below)
http://www.atlanteanconspiracy.com/2015/04/flat-earth-enlightenment.html
conclusion: we cannot empirically observe the curve, for it is impossible - according to the globe theory - that lighthouses and ships are visible at a distance of 100 miles, they should be hidden behind a wall of curved water of at least 1 mile in height ... this bulging curved water has never been observed.
Ps please dont try to use fake CGI pictures produced by the scammers of NASA as evidence