echo sounding???

[hameg_5000]

hello
Can someone tell me crazy but
* Has anyone thought of a fishing nautical probe
Surveying the land?
I have a boat and my probe marks the bottom of the sea, the rocks, the different layers of the land, besides the fish .. Some work at 50kHz

You think?

[Davor]

If you dig a hole and fill it with water as an interface for the probe - why not.