Orienteering, or compass navigation, is a matter of training, practice and familiarity with the use of underwater compasses, combined with various techniques for reckoning distance underwater, including kick cycles (one complete upward and downward sweep of a kick), time, air consumption and occasionally by actual measurement.
Orienteering involves developing expertise through practice, along with knowledge of how to utilize underwater compasses and calculate distances underwater using different methods, including kicking patterns, time, air consumption, and precise measurement.