A control apparatus for an outboard motor (4, 5) mounted on a hull (2), comprises a detection unit (46) that detects a variation of rotation of a propeller (25), a protruding portion (60) provided at a rear end portion (25b) of the propeller (25) to rotate integrally with the propeller (25) and extending from the propeller (25) to a rear of the hull (2), and a control unit (30, 40) that determines that an object has contacted the protruding portion (60) when a variation of rotation of the propeller (25) exceeds a predetermined threshold is detected.

An outboard motor includes a tilt shaft, an engine assembly, and a cowl. The tilt shaft defines a horizontal tilt axis during a tilting action of the outboard motor. At least a portion of the engine assembly is above the tilt axis in a tilt-down state of the outboard motor. The cowl accommodates at least a portion of the engine assembly. The tilt shaft includes a first shaft and a second shaft which are spaced apart and coaxial with each other. A portion of the cowl is between the first shaft and the second shaft.

An outboard motor includes a tilt shaft, an engine assembly, and a cowl. The tilt shaft defines a horizontal tilt axis during a tilting action of the outboard motor. At least a portion of the engine assembly is above the tilt axis in a tilt-down state of the outboard motor. The cowl accommodates at least a portion of the engine assembly. The tilt shaft includes a first shaft and a second shaft which are spaced apart and coaxial with each other. A portion of the cowl is between the first shaft and the second shaft.

A marine engine assembly for mounting to a watercraft is disclosed. The marine engine assembly has an engine unit, an exhaust system fluidly and a propulsion device. The engine unit includes an engine unit housing, an internal combustion engine and an air intake assembly. The air intake assembly, at least one combustion chamber, and the exhaust system together defining at least in part a gas flow pathway. A sealing valve is provided in the gas flow pathway. The sealing valve has an open position permitting flow of gas therethrough. The sealing valve has a closed position preventing flow of gas therethrough for sealing a portion of the gas flow pathway downstream of the sealing valve from a portion of the gas flow pathway upstream of the sealing valve.

A marine engine assembly for mounting to a watercraft is disclosed. The marine engine assembly has an engine unit, an exhaust system fluidly and a propulsion device. The engine unit includes an engine unit housing, an internal combustion engine and an air intake assembly. The air intake assembly, at least one combustion chamber, and the exhaust system together defining at least in part a gas flow pathway. A sealing valve is provided in the gas flow pathway. The sealing valve has an open position permitting flow of gas therethrough. The sealing valve has a closed position preventing flow of gas therethrough for sealing a portion of the gas flow pathway downstream of the sealing valve from a portion of the gas flow pathway upstream of the sealing valve.

An outboard motor includes an outboard motor main body, a support including a tilt shaft and that supports the outboard motor main body, and a trim cylinder including a first trim cylinder shaft disposed below the tilt shaft along an outer surface of a transom of a hull. A distance between the tilt shaft and the first trim cylinder shaft is adjustable.

An outboard motor includes an outboard motor main body, a support including a tilt shaft and that supports the outboard motor main body, and a trim cylinder including a first trim cylinder shaft disposed below the tilt shaft along an outer surface of a transom of a hull. A distance between the tilt shaft and the first trim cylinder shaft is adjustable.

A stowable propulsion system for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsion device is configured to propel the marine vessel in water. A shaft extends along a length axis and pivotably couples the propulsion device to the base. The propulsion device is pivotable into and between a stowed position and a deployed position, wherein pivoting the propulsion device causes the shaft to rotate about the length axis.

A stowable propulsion system for a marine vessel. A base is configured to be coupled to the marine vessel. A propulsion device is configured to propel the marine vessel in water. A shaft extends along a length axis and pivotably couples the propulsion device to the base. The propulsion device is pivotable into and between a stowed position and a deployed position, wherein pivoting the propulsion device causes the shaft to rotate about the length axis.

A tiller is for controlling a marine drive. The tiller has a base bracket assembly and a tiller arm which is extends outwardly from the base bracket assembly. The base bracket assembly is configured to facilitate yaw adjustment of the tiller arm, in particular into and between a variety of yaw positions relative to the base bracket assembly. The tiller arm has a grip restraining device which is located on the bottom of the middle portion of the tiller arm and is manually accessible from both sides of the tiller arm. The grip restraining device is specially configured to selectively restrain rotation of a hand grip on the outer end of the tiller arm. The tiller arm also has a tilt mechanism which facilitates tilting of the tiller arm relative to the base bracket assembly into and between a variety of tilt positions, including a straight upward tilt position and a straight downward tilt position.