An outboard propulsion system comprising an engine configured to receive oil; an oil pan configured to receive oil from the engine; and an oil reservoir configured to receive oil from the oil pan and provide oil to the engine, in use.

The present invention concerns an outboard propulsion device for a navigational seacraft comprising a propulsion means (4), at least one engine (1) supplying torque to a drive shaft (20) extending out of the engine and driving a transmission shaft (3) intended to supply torque to the propulsion means, the drive shaft and the propulsion shaft being in a fixed relative orientation, and a transmission means (2) connected at the input to the drive shaft (20) in order to receive the engine torque and transmit it, in the form of modified torque, to the transmission shaft (3) to which it is connected at the output, and the transmission shaft (3) is a double universal joint shaft (30, 31) that extends in an inclined manner between the transmission means (2) and the propulsion means (4).

An outboard motor includes a main body including a power source and a bracket to be attached to a stern of a hull. The main body is rotatable about a rotating shaft of the bracket such that an upper portion of the main body moves toward a front of a marine vessel and a lower portion of the main body moves toward a rear of the marine vessel, or such that the upper portion of the main body moves toward the rear of the marine vessel and the lower portion of the main body moves toward the front of the marine vessel. When the marine vessel is cruising, a distance from the rotating shaft to an upper end of the stern in a vertical direction of the marine vessel is equal to or longer than a distance from the rotating shaft to a propeller shaft in the vertical direction of the marine vessel.

An outboard motor includes a main body including a power source and a bracket to be attached to a stern of a hull. The main body is rotatable about a rotating shaft of the bracket such that an upper portion of the main body moves toward a front of a marine vessel and a lower portion of the main body moves toward a rear of the marine vessel, or such that the upper portion of the main body moves toward the rear of the marine vessel and the lower portion of the main body moves toward the front of the marine vessel. When the marine vessel is cruising, a distance from the rotating shaft to an upper end of the stern in a vertical direction of the marine vessel is equal to or longer than a distance from the rotating shaft to a propeller shaft in the vertical direction of the marine vessel.

The embodiments herein relate to amounting arrangement (100) for a propulsion unit. The mounting arrangement (100) comprises an attachment arrangement (133) adapted to attach said mounting arrangement (100) to a marine vessel. The mounting arrangement (100) comprises a propulsion unit carrying arrangement (110) adapted to be rigidly connectable to said propulsion unit. The propulsion unit carrying arrangement (110) is pivotably mounted to said attachment arrangement (133). The embodiments further relate to a marine propulsion system (200) comprising a propulsion unit (210) and the mounting arrangement (100). The propulsion unit (210) is rigidly connected to the propulsion unit carrying arrangement (100). An output shaft of the propulsion unit (210) is drivingly connectable to a shaft of a propeller drive (220). The marine propulsion system is pivotably mountable to a marine vessel. Embodiments further relate to a marine vessel (300) comprising a hull (302, 303, 304) and the marine propulsion system (200), the marine propulsion system (200) being pivotably mounted to the hull (302, 303, 304) of the marine vessel (300).

The embodiments herein relate to amounting arrangement (100) for a propulsion unit. The mounting arrangement (100) comprises an attachment arrangement (133) adapted to attach said mounting arrangement (100) to a marine vessel. The mounting arrangement (100) comprises a propulsion unit carrying arrangement (110) adapted to be rigidly connectable to said propulsion unit. The propulsion unit carrying arrangement (110) is pivotably mounted to said attachment arrangement (133). The embodiments further relate to a marine propulsion system (200) comprising a propulsion unit (210) and the mounting arrangement (100). The propulsion unit (210) is rigidly connected to the propulsion unit carrying arrangement (100). An output shaft of the propulsion unit (210) is drivingly connectable to a shaft of a propeller drive (220). The marine propulsion system is pivotably mountable to a marine vessel. Embodiments further relate to a marine vessel (300) comprising a hull (302, 303, 304) and the marine propulsion system (200), the marine propulsion system (200) being pivotably mounted to the hull (302, 303, 304) of the marine vessel (300).

An OSD-outboard stern drive boat propulsion system where single or multiple engines are positioned at boat stern inside boat outer envelope on customized-elevated subfloor and connected to outdrive unit that is attached to boat stern plate. Engine/s are positioned lower than typical outboard engine/s and higher than typical inboard engine/s. Engine compartment is covered by a customized hood and engines are easily accessible form boat floor like typical outboard engine configuration. Drive configuration is like typical sterndrive with engine/s crankshaft in horizontal position connected to outdrive via cardan joint allowing drive tilting up and down. The main purpose of using OSD would be use of one or two diesel or gasoline marine engines of existing design eliminating use of 2-6 large outboards for boats longer than 25 feet and outboard like access to engines for maintenance while using marine engines and providing much simpler boat/engine configuration.

An OSD-outboard stern drive boat propulsion system where single or multiple engines are positioned at boat stern inside boat outer envelope on customized-elevated subfloor and connected to outdrive unit that is attached to boat stern plate. Engine/s are positioned lower than typical outboard engine/s and higher than typical inboard engine/s. Engine compartment is covered by a customized hood and engines are easily accessible form boat floor like typical outboard engine configuration. Drive configuration is like typical sterndrive with engine/s crankshaft in horizontal position connected to outdrive via cardan joint allowing drive tilting up and down. The main purpose of using OSD would be use of one or two diesel or gasoline marine engines of existing design eliminating use of 2-6 large outboards for boats longer than 25 feet and outboard like access to engines for maintenance while using marine engines and providing much simpler boat/engine configuration.

An outboard propulsion system comprising an engine configured to receive oil; an oil pan configured to receive oil from the engine; and an oil reservoir configured to receive oil from the oil pan and provide oil to the engine, in use.

An outboard propulsion system comprising an engine configured to receive oil; an oil pan configured to receive oil from the engine; and an oil reservoir configured to receive oil from the oil pan and provide oil to the engine, in use.