I’m sure they have some explanation for it but wouldn’t a ship need to rise before disappearing over one of these water mountains instead of just getting smaller and vanishing like reality. Or is this just a really shallow but super wide ‘mountain’ so the increased height is too low to really notice? Or is this like a water cliff and they just fall off and vanish. I know I’m looking for reason where there isn’t any…
Maybe it's that the land is on top of the water mountain/ plateau? And as the ships sail away they descend from the plateau? Maybe it's the gravity of the land that causes the water to bunch up near the land? Maybe the earth is actually spherical? Wait no not that last one...
From shore it looks like the ship goes up doesn't it? But what is happening when you're on a boat and go on the ocean.? Maybe the water mountains are like silicon breasts as you ride along them they depress under the weight?