The acquisition of underwater ARIS (Adaptive Resolution Imaging Sonar) Explorer 1800 cameras (with accessories) is needed to remotely monitor and count fish. The ARIS Explorer 1800 is a multibeam imaging sonar that forms many small acoustic beams at once, allowing the sonar to detect objects in turbid waters to record images of moving targets, like swimming fish. The ARIS Explorer 1800 has dual frequencies which allows it to detect fish at different distances with clarity. At the higher frequency of 1.8 MHz, the ARIS sonar imaging technology provides detail sufficient for thorough inspection up to 15 meters. At the lower frequency of 1.1 MHz, the ARIS camera’s clarity makes it an appropriate tool for detecting targets with high resolution up to 35 meters. ARIS Explorer 1800 is ideally suited for detecting and inspecting underwater structures and targets, which makes it the ideal camera for this requirement, as there is no other sonar that is commercially available that can meet the fish monitoring requirements of LD22 FPIP. The ARIS Explorer 1800 has a low power consumption (15-20 w) allowing for extended unattended and remote operation, which is ideal of the LD22 FPIP, as monitoring will be conducted off-site.

Specific supplies (and quantities) needed include ARIS Explorer 1800 (4), AR3 Rotator (4), Concentrator Lens (4), Cable with Reek and Transit Case (4).