Imagine this hypothetical situation: there are two ships in the middle of the pacific ocean. One of the ships begins to sail east, while the other remains stationary. Why is it that, after it has traveled about 12 miles, the traveling ship disappears from the sight of the stationary ship? Even with binoculars or a telescope, it is impossible to see the traveling ship from the stationary ship. Can you flat earthers explain this phenomena? To me, the only logical explanation seems to be the curvature of the earth.