Rotating the Ping Sonar

Has anyone managed to rotate the Ping Sonar? Apart from manually moving the mount.
I would like to be able to rotate it from straight ahead to vertically down. My ROVs are capable of vertical dives so it would be nice to see the bottom coming up before running into a rock at high speed.
See my ideas on “Rotating Shaft Seals” on this forum.
Is there a commercial motor/servo that will do this.