The multi-beamimaging sonerhas a rated pressure-resistant water depith of 30om,with mutple operating frequencies avcilble and on fective detection range of
7om. tsupports equal -angle and equal dlitance beam modles and its 512 beams can handle most detection tasks. The target of this sonertest was the opposte
bridge pier. The multi -beam sonar covers a wide water area and captures high-resolution underwater images.