B63H20/18

OR RELATING TO A MARINE PROPULSION SYSTEM
20250010965 · 2025-01-09 · ·

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.

Watercraft adjustable shaft spacing apparatus and related method of operation
09758225 · 2017-09-12 · ·

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include an upper drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The upper drive unit is movably joined with a lower drive unit, which includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The lower drive unit is movable from a raised mode, in which it is adjacent the upper drive unit, to a lowered mode, in which it is a preselected distance from the upper drive unit, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and outdrive upper unit are also provided.

Watercraft adjustable shaft spacing apparatus and related method of operation
09708045 · 2017-07-18 · ·

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include an upper drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The upper drive unit is movably joined with a lower drive unit, which includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The lower drive unit is movable from a raised mode, in which it is adjacent the upper drive unit, to a lowered mode, in which it is a preselected distance from the upper drive unit, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and outdrive upper unit are also provided.

Watercraft adjustable shaft spacing apparatus and related method of operation
09708045 · 2017-07-18 · ·

An outdrive for a marine vessel, such as a watercraft having an inboard engine, is provided. The outdrive can include an upper drive unit having a driveshaft that rotates in response to rotation of an input shaft coupled to an engine within a hull of the watercraft. The upper drive unit is movably joined with a lower drive unit, which includes a propeller shaft that rotates in response to rotation of the driveshaft, and an associated propeller. The lower drive unit is movable from a raised mode, in which it is adjacent the upper drive unit, to a lowered mode, in which it is a preselected distance from the upper drive unit, thereby lowering a thrust point produced by the propeller, all while the watercraft is moving through water and while the propeller is producing thrust. A related method and outdrive upper unit are also provided.

Method for maneuvering a boat provided with a single drive unit
12420902 · 2025-09-23 · ·

A computer-implemented method for maneuvering a boat provided with a single drive unit, includes: Obtaining net momentum direction data indicative of a target horizontal rotational movement of the hull, triggering a series of bursts of thrust by the drive unit, said series of bursts of thrust comprising a plurality of primary bursts and a plurality of secondary bursts directed differently than the primary bursts, The primary bursts and the secondary bursts are directed such that they provide a respective longitudinal thrust component parallel to a hull longitudinal axis. The primary bursts are directed such that the longitudinal thrust components of the primary bursts act in the opposite direction with respect to the direction of the longitudinal thrust components of the secondary bursts. The primary bursts and the secondary bursts are further directed such that they jointly provide a net momentum on the hull associated with said net momentum direction data.

Transportable outboard motors

A transportable outboard motor has a tiller which is pivotable about a lateral tilt axis into a plurality of tilt positions and also pivotable about an axial yaw axis into a plurality of yaw positions. The tiller is pivotable about the axial yaw axis into a straight-ahead position, into a port yaw position which is oriented towards the port side relative to the straight-ahead position, and into a starboard yaw position which is oriented towards the starboard side relative to the straight-ahead position. The tiller is pivotable downwardly about the lateral tilt axis from the port yaw position, and downwardly about the lateral tilt axis from the starboard yaw position. Pivoting the tiller into the plurality of yaw positions creates space for a user to manually grasp a swivel tube and thereby lift the transportable outboard motor from a rear-laydown position.

Transportable outboard motors

A transportable outboard motor has a tiller which is pivotable about a lateral tilt axis into a plurality of tilt positions and also pivotable about an axial yaw axis into a plurality of yaw positions. The tiller is pivotable about the axial yaw axis into a straight-ahead position, into a port yaw position which is oriented towards the port side relative to the straight-ahead position, and into a starboard yaw position which is oriented towards the starboard side relative to the straight-ahead position. The tiller is pivotable downwardly about the lateral tilt axis from the port yaw position, and downwardly about the lateral tilt axis from the starboard yaw position. Pivoting the tiller into the plurality of yaw positions creates space for a user to manually grasp a swivel tube and thereby lift the transportable outboard motor from a rear-laydown position.