OTHER SOUNDERS ARE HISTORY! Most vertical depth sounders show a depth which is an average of what is behind the boat. At EchoPilot we believe that most boat owners would prefer to see hazardous obstructions in front of them!!! An Echo Pilot forward looking sonar is unlike conventional depth finders, fish finders and sounders in that it acts like an underwater radar enabling you to see submerged obstructions in front of your boat before you hit them. EchoPilot's patented technology creates a real-time image of the seabed and potential hazards lying below the surface ahead of your boat. Other technologies, such as phased array forward looking sonar and conventional depth finders, produce images of underwater objects that are many seconds old, meaning you may have already driven over or hit them by the time they are displayed.