Underwater positioning GPS by triangulation?


One of the constant issues we run into is the inability to put a GPS position on an moving submerged object. You can launch the ROV from the boat and know the GPS position of the boat, but you do not know the position of the ROV. Has anyone ever done anything with sonar imaging or triangulation pinging with a ROV to track or mark it’s position?

One concept is placing fixed location buoys with ping receivers and triangulating the delay between ping send and receive at each receiver.

Another concept is to use a 360 sidescan head on the boat to track the ROV but I don’t think the technology is robust enough yet for that.

Any suggestions or ideas?


As a bit of a primer have a look at



I’m not sure where @Jim_Trezzo is up to