Coastal Navigation Learn the basics of maps and charts, compasses, aids to navigation, declination/variation, and rules of the nautical road. More advanced skills such as dead reckoning, range lines, fixes, following bearings, triangulation and current are also covered. WHO: Charleston County Parks | WHEN: 6 to 8 tonight and 9 a.m. to noon Saturday | WHERE: Commission Board Room at CCPRC Headquarters |