A Cylindrical Projection is a method used in cartography to represent the curved surface of the Earth on a flat map. This technique involves wrapping a cylinder around the globe, projecting the Earth's features onto the cylinder, and then unrolling it into a flat surface. This type of projection is useful for navigation because it preserves angles, making it easier to plot straight-line courses. However, while cylindrical projections maintain shape and direction, they distort size and distance, especially near the poles. A well-known example of this projection is the Mercator Projection, which is widely used for marine navigation but significantly enlarges areas far from the equator.