JWFishers Sub Bottom Profiler
Sub Bottom Profilers (SBP) are used to identify the thickness of different strata layers below the ocean floor. Most importantly, for our application, it will also show any density disturbance within a strata layer. It's the density disturbance we are after; it indicates that there is something foreign within the strata layer. The SBP-1 has the advantage of being pole mountable for shallow water projects or boat towable (up to 1,000 feet of cable available). The fish is towed 5 to 10 feet off the bottom to keep the sonar beam narrow. The system comes complete with Sub Bottom tow fish, 150 feet of cable, topside Sonar Processor Box, a GPS, and a laptop computer with Fishers Sonar View sub bottom profiler software