An outboard motor includes a first exhaust passage connected to an exhaust port and extending downward from the exhaust port through a support frame on a lateral side of a cylinder head. A first case accommodates an engine. A second case accommodates a propeller shaft. A third case is between the first case and the second case in a vertical direction. An exhaust pipe is between the first case and the second case in the vertical direction. The exhaust pipe is connected to the first exhaust passage. At least a portion of the exhaust pipe is outside the third case as seen in a side view of the outboard motor. An exterior cover is between the first case and the second case in the vertical direction. The exterior cover covers the exhaust pipe.

An outboard motor includes a case having a gear chamber, a drive shaft arrangement hole, and a propeller shaft arrangement hole, a drive shaft, a propeller shaft, a drive gear, a driven gear, a gear position setting member provided in front of the driven gear in the case and configured to set a position of the driven gear in a front-rear direction, and a screw mechanism configured to move the gear position setting member in the front-rear direction when the gear position setting member is rotated about an axis of the gear position setting member. The screw mechanism includes a first screw provided in the case and a second screw provided on the gear position setting member and configured to be screwed with the first screw.

An outboard motor includes a first exhaust passage connected to an exhaust port and extending downward from the exhaust port through a support frame on a lateral side of a cylinder head. A first case accommodates an engine. A second case accommodates a propeller shaft. A third case is between the first case and the second case in a vertical direction. An exhaust pipe is between the first case and the second case in the vertical direction. The exhaust pipe is connected to the first exhaust passage. At least a portion of the exhaust pipe is outside the third case as seen in a side view of the outboard motor. An exterior cover is between the first case and the second case in the vertical direction. The exterior cover covers the exhaust pipe.

An outboard propulsion system comprising: a first portion for attachment to a boat comprising a stern, the first portion comprising an engine including a crankshaft; and a second portion comprising at least one propeller shaft having a longitudinal axis along the elongate length of the at least one propeller shaft, wherein the at least one propeller shaft is operably connected to the crankshaft via at least one drive shaft configured to transmit motive power therebetween, wherein the at least one drive shaft comprises a drop shaft and wherein the drop shaft is substantially perpendicular to the at least one propeller shaft, wherein the second portion is configured to pivot relative to the first portion about a steering axis, wherein the steering axis intersects the longitudinal axis of the at least one propeller shaft at an obtuse angle, wherein the first portion and second portion are configured to tilt together about a single axis of rotation substantially parallel to the stern of the boat, and wherein the first portion is fixed about a substantially vertical axis.

An outboard propulsion system comprising: a first portion for attachment to a boat comprising a stern, the first portion comprising an engine including a crankshaft; and a second portion comprising at least one propeller shaft having a longitudinal axis along the elongate length of the at least one propeller shaft, wherein the at least one propeller shaft is operably connected to the crankshaft via at least one drive shaft configured to transmit motive power therebetween, wherein the at least one drive shaft comprises a drop shaft and wherein the drop shaft is substantially perpendicular to the at least one propeller shaft, wherein the second portion is configured to pivot relative to the first portion about a steering axis, wherein the steering axis intersects the longitudinal axis of the at least one propeller shaft at an obtuse angle, wherein the first portion and second portion are configured to tilt together about a single axis of rotation substantially parallel to the stern of the boat, and wherein the first portion is fixed about a substantially vertical axis.

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).

A portable propulsion system for a watercraft may include a shaft, a propeller, an outer casing, and a flexible strap. The shaft may have a prop end section, a drive end section, and a rotational axis extending from the prop end section to the drive end section. The propeller may be connected to the prop end section of the shaft. The drive end section may be configured for removable connection to a driver for rotation of the propeller via rotation of the shaft about the rotational axis to propel the watercraft. The outer casing may be disposed around the shaft. The flexible strap may have first and second end sections connected to the outer casing in respective first and second regions.

A portable propulsion system for a watercraft may include a shaft, a propeller, an outer casing, and a flexible strap. The shaft may have a prop end section, a drive end section, and a rotational axis extending from the prop end section to the drive end section. The propeller may be connected to the prop end section of the shaft. The drive end section may be configured for removable connection to a driver for rotation of the propeller via rotation of the shaft about the rotational axis to propel the watercraft. The outer casing may be disposed around the shaft. The flexible strap may have first and second end sections connected to the outer casing in respective first and second regions.

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.