Side scan sonar and sub-bottom profiler, and magnetometer
The large yellow capsule is the Edgetech 2000DS, which houses the side scan sonar and sub-bottom profiler. The side scan sonar sees the surface of the ocean floor and the sub-bottom profiler detects features just beneath the surface. Attached to this equipment via the green cable is the magnetometer, which is like a metal detector that picks up ferrous materials above and below the surface of the ocean floor, particularly ship hulls, ship elements, fittings, cannons, anchors and more.