 With the regiment, geographical coordinates can also be used to guide navigation.For instance, the search for the Todesillas line (meridian 370 leagues west of Cape Verde) is much simplified by reference to a precise latitude.For instance, suppose two ships depart from Cape Verde (17° N), one on a West by North bearing (WbN, that is one quarter above West, or "q" = 7 from North axis), the other by a west-northwest bearing (WNW, two quarters above west, or "q" = 6 from the North axis).