Winch in stainless steel with two drums in cascade, the lower to store all the rope, and the high smaller- only the half of the rope. Each drum is independently driven by means of his exclusive hydraulic motor Poclain, and it exists two possibilities of guide, the first hydraulically assisted like the pictures and the second manually driven. In case of breakdown in one of the two hydraulic motors, the manoeuvre can be realized hauling the other rope end by means of the warping heat.