Abstract: A bridle line control winch for a deflector for marine towing, with fore and aft double or triple bridle lines to attachment points in upper, possible middle, and lower parts of the deflector, preferably in horizontal plate frames, wherein at least said fore or aft bridle lines are arranged to be adjusted inwardly and outwardly so as for adjusting an attack angle of said deflector relative to a course line. The bridle line control winch is provided with a pivotally arranged control winch frame arranged between said bridle lines' attachment points to the deflector, and the bridle lines themselves. The control winch frame is provided with a winch sheave with an asymmetrically arranged pulley arranged on said winch sheave for holding an eyelet or end of said bridle line. The winch sheave is arranged to be driven by an actuator in a desired direction of rotation.