THE RECREATIONAL EXPLORER
Don’t have room on your boat for a gigantic AUV or ROV? You can still get detailed imagery of your local seafloor with either chirp or sidescan sonar, with companies such as Simrad, Lowrance, Garmin and Humminbird offering accessible versions of both. One cool multibeam sonar system to check out is Furuno’s DFF-3D, a phased-array system that reads to the side, as well as up and down. Coupled with Furuno’s compact Thru-Hull or Transom Mount multibeam transducer, it can produce traditional fish-finder graphs, imagery to either side of the boat, and detailed 3D images of the ocean floor. It has sidebar detection up to 650 feet over 120-degree swaths, and its main beam can penetrate to over 980 feet directly under the boat. While that’s about one-tenth the depth capabilities of Petrel’s AUV, it’s enough to provide exceptional 3D imagery of your local shipwreck so you know where to drop a line or a dive flag.