By operating a vessel on alabama waters,a Field Sobriety test will determine Blood Alcohol Content (BAC).
In Alabama, a vessel must stay 100 feet away from a diver-down flag.
The Standardized Field Sobriety Test consists of 3 tests performed during a traffic stop in order to determine if a driver is impaired. The 3 tests that make up the SFST are the horizontal gaze nystagmus (HGN), the walk-and-turn, and the one-leg stand tests.