We expect that ABIS may have other applications as well. The large bulkhead connector at center of bottle endcap connects to the fiber optic cable. ABIS II display of two hands in our test tank. Note reflection from wedding ring. The broad line to the right of the hands is the side of the test tank.
Ranges are in feet from the sonar soundhead.
This image shows three tools 7.25 ft from the sonar. The tool on the left is a screw driver, the center tool is a pair of cutters, and the tool on the right is an endwrench partially covering an unpainted patch on the tank bottom. This image shows a waterproof flashlight and a mallet 7.25 ft from the sonar.