Abstract: A boat drive has an underwater housing (10) which is arranged outside of a boat hull (7) and can swivel relative to the boat hull (7) about a vertical swivel axis (11). In the housing at least one propeller shaft (13) is mounted and can be driven. A swivel drive mechanism is arranged in the inside space (6) of the boat hull (7) for swiveling the underwater housing (10) in order to control the driving direction of the boat. A zero-position mark (25) is provided on an element of the swivel drive mechanism, which facilitates easy determination of a zero position of the underwater housing (10).

Abstract: A boat hull (1) for a boat, with a boat drive (2) which extends through a hull opening (3) in the bottom of the boat hull (1). The boat drive (2) is connected to the boat hull (1) by at least one fastening member (4). To do this, at least one positioning element (5) is provided, on the outside (6) of the boat hull (1), for positioning the fastening member (4) relative to the boat hull (1).

Abstract: A boat drive has an underwater housing (10) which is arranged outside of a boat hull (7) and can swivel relative to the boat hull (7) about a vertical swivel axis (11). In the housing at least one propeller shaft (13) is mounted and can be driven. A swivel drive mechanism is arranged in the inside space (6) of the boat hull (7) for swiveling the underwater housing (10) in order to control the driving direction of the boat. A zero-position mark (25) is provided on an element of the swivel drive mechanism, which facilitates easy determination of a zero position of the underwater housing (10).

Abstract: A boat hull (1) for a boat, with a boat drive (2) which extends through a hull opening (3) in the bottom of the boat hull (1). The boat drive (2) is connected to the boat hull (1) by at least one fastening member (4). To do this, at least one positioning element (5) is provided, on the outside (6) of the boat hull (1), for positioning the fastening member (4) relative to the boat hull (1).

Abstract: A sealing arrangement (1) for a pivotally arranged boat drive in a hull of a boat, the boat drive extends through a hull opening in the bottom of the boat. The boat drive forms, together with the hull of the boat or with a connecting piece (2) set into the hull of the boat, an annular gap. The annular gap is bridged by at least two flexible sealing elements (5, 6), and the at least two sealing elements (5, 6) enclose at least one ring chamber (7) between them.

Abstract: A connecting piece (1) that can be set or inserted into the hull of a boat. The connecting piece has an opening (2) therein for the passage of a pivoted boat drive unit. An outer edge area (3) of the connecting piece (1) facilitates fixing and sealing of the connecting piece (1) relative to the hull of the boat. The connecting piece (1) comprises a sandwich structure and the sandwich structure generally comprises an inner steel plate (5) and an outer steel plate (6) and an elastomer material arranged therebetween.

Abstract: A ship drive with upper and lower drive units that are respectively arranged inside and outside the hull. At least the lower drive unit is pivotally mounted relative to the hull. An input shaft of the upper drive unit is driven by a motor. At least one propeller is driven by an output shaft of the lower drive unit. A vertical drive shaft communicates, via an upper bevel gearing, with the input shaft of the upper drive unit and, via a lower bevel gearing, with the output shaft of the lower drive unit. The upper and lower drive units comprise interconnected lubrication oil ducts by which lubrication oil is supply to and remove from the upper drive unit. At least one lubrication oil duct of the upper drive unit is connected, by a flexible line, to a lubrication oil container arranged in the area of the upper drive unit.

Abstract: A drive arrangement for an inboard-outboard drive engine of a watercraft, comprising a drive unit (2) with an upper part (3) arranged in a hull (1) of the watercraft and a lower part (4) which projects through a sealed opening in the hull (1) into the surrounding water such that a drivetrain extends through the drive unit (2). At least one propeller is supported by the lower part (4) and can be driven by a motor coupled to drive the upper part (3). The upper part (3) is in contact with a carrier system which, by virtue of a plurality of supporting units (12A-12D), supports reaction forces and torques produced in the drive unit (2) in the longitudinal, transverse and vertical directions relative to the hull (1).

Abstract: The invention concerns a ship drive (1) with an upper drive unit (7a) arranged in the ship's hull (39) and a lower drive unit (7b) arranged outside the ship's hull, in which at least the lower drive unit (7b) is mounted so that it can pivot relative to the ship's hull (39), in which an input shaft (12) of the upper drive unit (7a) can be driven by a drive motor, in which at least one propeller (18, 19) can be driven by an output shaft (37) arranged in the lower drive unit (7b), in which a vertically arranged driveshaft (21) is in driving connection via upper bevel gear (4) with the input shaft (12) of the upper drive unit (7a) and via lower bevel gear (4) with the output shaft (37) of the lower drive unit (7b), and in which the upper and the lower drive units (7a, 7b) comprise interconnected lubrication oil ducts such that the lubrication oil can be filled into the upper drive unit (7a) and can be removed again therefrom.

Abstract: A sealing arrangement (1) for a pivotally arranged boat drive in a hull of a boat, the boat drive extends through a hull opening in the bottom of the boat. The boat drive forms, together with the hull of the boat or with a connecting piece (2) set into the hull of the boat, an annular gap. The annular gap is bridged by at least two flexible sealing elements (5, 6), and the at least two sealing elements (5, 6) enclose at least one ring chamber (7) between them.

Abstract: A drive arrangement for an inboard-outboard drive engine of a watercraft, comprising a drive unit (2) with an upper part (3) arranged in a hull (1) of the watercraft and a lower part (4) which projects through a sealed opening in the hull (1) into the surrounding water such that a drivetrain extends through the drive unit (2). At least one propeller is supported by the lower part (4) and can be driven by a motor coupled to drive the upper part (3). The upper part (3) is in contact with a carrier system which, by virtue of a plurality of supporting units (12A-12D), supports reaction forces and torques produced in the drive unit (2) in the longitudinal, transverse and vertical directions relative to the hull (1).

Abstract: A connecting piece (1) that can be set or inserted into the hull of a boat. The connecting piece has an opening (2) therein for the passage of a pivoted boat drive unit. An outer edge area (3) of the connecting piece (1) facilitates fixing and sealing of the connecting piece (1) relative to the hull of the boat. The connecting piece (1) comprises a sandwich structure and the sandwich structure generally comprises an inner steel plate (5) and an outer steel plate (6) and an elastomer material arranged therebetween.