Sonar minimum depths

Accurate bottom tracking can be unreliable in depths shallower than 0.8 m/2.62 ft. When operating at or below this depth be cautious of misleading sonar returns, false bottom tracking and incorrect depth readings

The Minimum sonar depth alarm is triggered when your vessel reaches or is in water shallower than this depth.

Below are examples of the Sonar app when it is tracking a false bottom in shallow waters.

1. Examples of incorrect depth readings due to false bottom tracking.

2. Actual bottom tracking and water depth.

3. False bottom tracking providing false depth readings.