The invention relates to a system for loading/unloading a vehicle into/from a carrier ship through at least one opening provided in the rear of said ship comprising an angled vehicle-receiving ramp (11) combined with a motor-driven means (12) for loading/unloading the vehicle, characterized in that the motor-driven means for loading/unloading the vehicle comprises a crossbeam-shaped means (13) for the ship that extends above the ramp (11) and is combined with a vehicle-hoisting/releasing cable (18), which is in turn combined with a first drive means (14) for hoisting/releasing the vehicle, and in that the crossbeam-shaped means (13) is longitudinally movable, by means of a second drive means (15) above the ramp (11), between a rear position for hoisting/releasing the vehicle and a front position for storing the vehicle on the ramp in the ship.