The invention relates to a hybrid drive for a water vehicle, comprising a primary drive motor arranged in the interior of the water vehicle and driving a drive shaft (11), an above-water gearbox (1) arranged downstream of the drive shaft (11) and having a gearbox housing (10) for driving a vertical shaft (13) that originates from the above-water gearbox (1), and an electric secondary drive motor (2) having a stator and a rotor, by means of which motor the vertical shaft (13) can be driven in addition or alternatively to the primary drive motor, wherein the secondary drive motor (2) is designed as having a hollow shaft (20) and the stator of same is connected in a torque-resistant manner to the gearbox housing (10) of the above-water gearbox (1).