The Dual Frequency Side Scan Sonar is a tool for seabed feature mapping, offering high quality results in a simple and reliable package. It offers switch selectable dual frequency operation (114 / 410 kHz). The towfish is available in depth ratings of 1000m and 2000m.
The standard system employs a lightweight towfish (Model 159D), which is easily deployed by one person. It houses a multiplexer (Model SS982), allowing data transmission over long cables, as well as the two dual frequency transducers (model 196D port and starboard). The transceiver unit (model SS981) outputs a signal compatible with all major acquisition systems.