“If we now consider the fact that when we travel by land or sea, and from any part of the known world, in a direction towards the North polar star, we shall arrive at one and the same point, we are forced to the conclusion that what has hitherto been called the North Polar region, is really the center of the Earth. That from this northern center the land diverges and stretches out, of necessity, towards a circumference, which must now be called the Southern region: which is a vast circle, and not a pole or center … In this and other ways all the great navigators have been frustrated in their efforts, and have been more or less confounded in their attempts to sail round the Earth upon or beyond the Antarctic circle. But if the southern region is a pole or center, like the north, there would be little difficulty in circumnavigating it, for the distance round would be comparatively small. When it is seen that the Earth is not a sphere, but a plane, having only one center, the north; and that the south is the vast icy boundary of the world, the difficulties experienced by circumnavigators can be easily understood.” –Dr. Samuel Rowbotham, “Earth Not a Globe, 2nd Edition” (21-23)
If the Earth were truly a globe, then every line of latitude South of the equator would have to measure a gradually smaller and smaller circumference the farther South traveled. In other words, the circumference at 10 degrees South latitude would comprise a smaller circle than at the equator, 20 degrees South latitude would comprise a circle smaller than 10, and so on. If, however, the Earth is an extended plane, then every line of latitude South of the equator should measure a gradually larger and larger circumference the farther South traveled. 10 degrees South latitude will comprise a larger circle than the equator, 20 degrees South latitude will comprise a circle larger than 10, and so on. Likewise, if the Earth were a globe, lines of longitude would bubble out at the equator while converging at both poles. Whereas if the Earth is an extended plane, lines of longitude should simply expand straight outwards from the North Pole. So which is actually the case?
“Upon the principle, as taught by Scripture and common observation, that the world is not a Planet, but consists of vast masses of land stretched out upon level seas, the North being the centre of the system, it is evident that the degrees of longitude will gradually increase in width the whole way from the North centre to the icy boundary of the great Southern Circumference. In consequence of the difference between the actual extent of longitudes and that allowed for them by the Nautical Authorities, which difference, at the latitude of the Cape of Good Hope, has been estimated to amount to a great number of miles, many Ship-masters have lost their reckoning, and many vessels have been wrecked. Ship-captains, who have been educated in the globular theory, know not how to account for their getting so much out of their course in Southern latitudes, and generally put it down to currents; but this reason is futile, for although currents may exist, they do not usually run in opposite directions, and vessels are frequently wrecked, whether sailing East or West.” –David Wardlaw Scott, “Terra Firma” (102)