Side-Scan Sonar

The EdgeTech 4200 Side Scan Sonar System is a device that provides images of seabed topography. Its operation principle involves placing transducers on both sides of a streamlined vehicle known as a tow fish. This tow fish emits sound waves toward the seabed, and the signals reflected back are processed by the side-scan sonar to display seabed features on recording paper. The system operates at frequencies of 100/400 kHz, with a maximum side-scan range of up to 500 meters. The side-scan sonar system is mainly used for seabed mapping, submarine cable and pipeline laying, and surveying special underwater obstacles such as reefs, artificial fish reefs, and shipwrecks.

The tow fish measures 125.6 cm in length and 11.4 cm in diameter, weighs 48 kg in air, and can withstand pressures at depths up to 2000 meters. For deeper operations, a depressor wing is required to assist with sinking.