Navigational lights located on aids to navigation can provide an excellent way to verify your position when coming into coastal waters. Here are some factors to remember when dealing with navigational lights on lighthouses, lighted daymarks, light towers and buoys.  Characteristics  Navigational lights are given a characteristic light pattern to help mariners identify the light. These range through a variety of types:  Fixed Single occulting (light is on longer than it is off), group occulting, composite group occulting  Isophase (light is on as long as it is off)  Single flashing (light is off longer than it is on), group flashing,…