Methods to detect Derelict Fishing Gear

Hi everyone!

I'm working on a project to detect and then predict where to find Derelict Fishing Gear in Coastal Waters along a 160km stretch. We would like to find remote sensing options that are carbon and cost efficient (so trying to find alternatives to manned aircrafts and lidar). We had anticipated finding more satellite and UAV based solutions than we did. If anyone has any suggestions around those or any other relevant technologies, it would be very helpful!

Thank you!