The invention relates to an immersion treatment system, particularly an electrophoretic immersion coating system (1; 101; 200), comprising at least one immersion basin (2; 102; 202) in a known manner that can be filled with a treatment fluid. A transport system (4; 104; 206) guides the objects (3; 103; 204) to be coated to the immersion basin (2; 102; 202), into the interior of the immersion basin (2; 102; 202), out of the immersion basin (2; 102; 202), and away therefrom. It comprises at least one transport car (5; 105; 208) whereon a vertically displaceable carriage (21; 121; 256) is disposed. A component (24; 124; 260) defining a rotary axis (24; 124; 262) is supported on the same, supporting a mounting device (29; 129; 212, 272) for the object to be treated (3; 103; 203). A motion sequence for the object (3; 103; 204) can be achieved in said manner, comprising a superposition of a horizontal linear motion, a vertical linear motion, and a rotary motion about the rotary axis (24; 124; 262).