Omni sonar
An omni sonar term, in plain English.
A full-circle scanning sonar that transmits and receives in every direction at once, redrawing the whole area around the boat on every ping.
See it in action
The free lessons show where this shows up on a real screen: start with the learning path, try it yourself on the omni trainer, or look it up on real CSH-10 captures in the field guide. Owners and captains talk settings every day on the forum.