Two-engine propulsion system for a ship

Propulsion system for a ship comprising one front and one rear propelling engines (M1, M2), the propelling powers of which can be coupled via a gear system (6) to a ship output shaft (7) wherein a front input shaft (9) of the gear system has a first axis of rotation (1) and is allocated to the front propelling engine (M1), a rear input shaft (10) has a second axis of rotation (2) and is allocated to the rear propelling engine (M2), and a gear output shaft (11) has a third axis of rotation (3) and is allocated to the ship output shaft (7) wherein said ship output shaft (7) is passed through below the rear propelling engine (M2) and wherein the second axis of rotation (2) extends in essential vertical manner above the first axis of rotation (1) and the first axis of rotation (1) extends in essential vertical manner above the third axis of rotation (3), characterized in that the gear system consists of a single closed gear (6), an input gear (14) located upon the rear input shaft (10) is permanently meshed with an intermediate gear (Z2) situated upon the first axis of rotation (1) and that an output gear (13) situated upon the ship output shaft (11) is likewise meshed with an intermediate gear (Z1) situated upon the first axis of rotation (1) so that a large vertical axial distance exists between the rear input shaft (10) and the gear output shaft (11).