Abstract: This paper briefly describes the important role of underwater towed operation, but in its practical operation, the towed body turning and retractable jobs are of vital importance. By using the lumped mass method, the towed body is simulated utilizing the principles of calculus. When the turning motion of the towing vessel acts on a towed body, the flexible cable connection will change accordingly. Moreover, different swing factors (boat speed) will also affect towing performance. Finally, this paper presents the detailed calculation of the movement of the potential towed body.