A propulsion system for a marine vessel includes a drive unit, a transom bracket for attaching the drive unit to a transom of the marine vessel, and an actuator for moving the drive unit. The transom bracket comprises a wall structure that is arranged to shield the actuator from the water.

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.

The outboard motor includes a lower unit that rotatably supports a propeller shaft installed with propellers, and a shift unit that switches a shift position. The lower unit is provided with an upwardly opened shift unit storage chamber and a lid member that covers the upper side of the shift unit storage chamber. The shift unit has a dog clutch that switches the shift position by reciprocating in parallel with the drive shaft, a shift fork member that reciprocates the dog clutch in parallel with the drive shaft, and an actuator that reciprocates the shift fork member in parallel with the drive shaft. The actuator is supported by the lid member.

A marine drive comprises an internal combustion engine that effectuates rotation of the driveshaft, a propulsor driven into rotation by the driveshaft so as to effect thrust, and a transmission that shifts amongst a forward gear, a reverse gear, and a neutral gear. The marine drive has a gear case housing on the bottom portion and a driveshaft housing around the driveshaft and positioned between the internal combustion engine and the gear case housing. The marine drive has a shift rod rotatable about its own axis, wherein rotation of the shift rod about its own axis shifts the transmission amongst the forward gear, the reverse gear, and the neutral gear. The marine drive also comprises an actuator positioned in the driveshaft housing that effectuates the rotation of the shift drive about its own axis.

In described embodiments, a motor mount includes a track with guide rails defining a channel, a sled within the channel, first and second end blocks between the guide rails at first and second ends, and a rotatable rod between the end blocks. The first end block has a rack formed thereon, and the guide rails form an opening adjacent to the first end block. Top and bottom plates of the sled have corresponding ends fixed with a hinge, the top plate fastened about the rod, the bottom plate have a gear formed around the hinge, and the hinge facing toward the first end block. Rotating the rod moves the hinge toward the first block and when the gear of the bottom plate engages the rack, the bottom plate rotates about the hinge through the opening and extends inverted over the first end block to an extended position.

In described embodiments, a motor mount includes a track with guide rails defining a channel, a sled within the channel, first and second end blocks between the guide rails at first and second ends, and a rotatable rod between the end blocks. The first end block has a rack formed thereon, and the guide rails form an opening adjacent to the first end block. Top and bottom plates of the sled have corresponding ends fixed with a hinge, the top plate fastened about the rod, the bottom plate have a gear formed around the hinge, and the hinge facing toward the first end block. Rotating the rod moves the hinge toward the first block and when the gear of the bottom plate engages the rack, the bottom plate rotates about the hinge through the opening and extends inverted over the first end block to an extended position.

A powering system for a watercraft is provided. The powering system for a watercraft includes a propeller, an electric motor, and a gearbox coupled to the electric motor; and, further includes an input shaft, an intermediate shaft, and a propeller shaft. The input shaft has a first end coupled to the gearbox and a second end rotatably coupled to the intermediate shaft. The intermediate shaft has a first end rotatably coupled to the input shaft and a second end rotatably coupled to the propeller shaft. The propeller shaft has a first end rotatably coupled to the intermediate shaft and a second end coupled to the propeller. The intermediate shaft includes an upper portion and a lower portion, the lower portion being rotatably coupled to the upper portion. Additionally, the powering system for a watercraft includes an upper supporting and a lower supporting structure. The upper supporting structure is configured to be tiltably coupled to a watercraft. The lower supporting structure is rotatably coupled to the upper supporting structure to rotate about the second direction.

A powering system for a watercraft is provided. The powering system for a watercraft includes a propeller, an electric motor, and a gearbox coupled to the electric motor; and, further includes an input shaft, an intermediate shaft, and a propeller shaft. The input shaft has a first end coupled to the gearbox and a second end rotatably coupled to the intermediate shaft. The intermediate shaft has a first end rotatably coupled to the input shaft and a second end rotatably coupled to the propeller shaft. The propeller shaft has a first end rotatably coupled to the intermediate shaft and a second end coupled to the propeller. The intermediate shaft includes an upper portion and a lower portion, the lower portion being rotatably coupled to the upper portion. Additionally, the powering system for a watercraft includes an upper supporting and a lower supporting structure. The upper supporting structure is configured to be tiltably coupled to a watercraft. The lower supporting structure is rotatably coupled to the upper supporting structure to rotate about the second direction.

An outboard motor includes a lower unit and an upper unit that is attachable to the stern of a boat, with the upper unit and lower unit configured to tilt together about a transverse tilt axis. The upper unit includes an engine, a transmission assembly and a drive shaft and the lower unit includes a lower unit housing and a propeller shaft that is connected to the drive shaft. The lower unit housing is configured to pivot relative to the upper unit, about a steering axis that extends coaxially with the drive shaft. The steering axis intersects the propeller axis at an obtuse angle.