This Picture Has Not Been Doctored In Any Way,

it appears exactly as it was taken straight from the camera,

and for the flat earth believers makes their case completely sound and sane as the boat and it's occupants drop off of the edge of the world, but there is an explanation, 

Twin_Keel took this picture and blamed the result on a camera malfunction, the digital camera apparently changed orientation from landscape to portrait in the middle of scanning the image, standing on a pier can totally disorient a person, so it may be the same for a camera, the result really looks like a modern day M.C. Escher, above is a slightly altered version of the picture, repaired by VallleyNL.