A sport amusement device consists of a snowboard like board integrated into a unibody inlet nozzle that accepts a high pressure fire hose. The inlet nozzle pivots and has a quick disconnect collar for the fire hose. The base includes land support columns to enable preparation for launch. A jet ski or other pump powers the fire hose. With horsepower ranges from 80 to 300 the board flies even forty feet into the air and can propel the rider underwater in a dolphin like manner. The board floats. Quick disconnect bindings allow the rider to quickly dismount. The rider's hands are completely free to help balance and steer the board in flight.

A water propelled flying board has a left and a right thrust nozzle. Each thrust nozzle has a knuckle joint attachment to a pressure water manifold. The thrust nozzles can be independently swiveled forward, backward, sideways or other directions relative to the rider. A left foot and a right foot platform are independently secured to the respective nozzle inlet to allow the rider to go toe up of toe down, they can rotate 360 degrees independently with each foot. This enables trick flying maneuvers including spinning like a top. The knuckle joint can be either a hose segment or a bearing. The left and right foot platforms or center blocks can be locked together and can have a spring return to neutral assembly.

A system for controlling a marine vessel having first and second steering nozzles and corresponding first and second reversing buckets, comprises a processor configured to receive a first vessel control signal including at least a component corresponding to a translational thrust command in a port direction, and that is configured to provide a set of actuator control signals coupled to and control the first and second reversing buckets. The processor is configured to provide the set of actuator control signals so as to maintain the first reversing bucket substantially in a first discrete position and the second reversing bucket substantially in a second discrete position as long as the first vessel control signal includes a component corresponding to a translational thrust command in the port direction.

A wearable water shoe apparatus for walking, standing and jet siding on water, includes in each of a first water shoe and a second water shoe (i) a sleeve to receive a leg of a user and (ii) a bottom section. The sleeve has a platform for standing thereon. Each pair of a plurality of pairs of jet motors is configured to eject a jet stream of water. A stabilization unit, including a tilt sensor and a plurality of gyroscopes, is configured to detect a stabilization state of at least one of the first water shoe and second water shoe. A processing unit is configured to receive output from the stabilization unit, determine a direction of movement indicated by the user and direct at least one of the pairs of motors to eject a water stream out of at least one of the water shoes based on the indicated direction.

A submersible vehicle is provided which is able to achieve six of freedom utilizing a combination of only two thrusters with no external control planes. Each of the two thrusters can include a plurality of ducts which can be selectively opened or closed, to varying degrees, to achieve six degrees of freedom for both control and propulsion.

A pontoon boat including a thruster system is disclosed.

A survival craft for maritime evacuation of passengers and crew members from a vessel or an offshore facility is disclosed. The survival craft has a hull, predominantly made of non-rigid inflatable tubes and one or more shells, the hull has a length, a width and a centerline, a bow and a stern. The survival craft further comprises a first pair of engine-powered propulsion means arranged at the stern on opposite sides of the centerline, and a second pair of engine-powered propulsion means arranged at the bow on opposite sides of the centerline, each engine-powered propulsion means has a propeller or a water jet, wherein a horizontal angle of each propeller or water jet of each engine-powered propulsion means can be independently set in relation to the centerline.

A jet propulsion boat includes a boat body; a main propulsion device including a jet device that jets a jet water stream from the boat body, and a direction change device that changes, in a lateral direction, an orientation of the jet water stream having been jetted; an auxiliary propulsion device provided on the boat body to impart a propulsion force in a lateral direction to the boat body; and a control device that controls the main propulsion device and the auxiliary propulsion device, and switches a control mode of the main propulsion device and the auxiliary propulsion device between a plurality of modes, in which the control mode includes a main control mode for driving the main propulsion device and stopping the auxiliary propulsion device to move the boat body, and a combined mode for driving both the main propulsion device and the auxiliary propulsion device to move the boat body.

A boat includes a first propulsion device attached to a rear portion of a boat body to generate a propulsion force along a displaceable first axis, a second propulsion device attached to the rear portion of the boat body to generate a propulsion force along a displaceable second axis, a manual operator to indicate a movement direction of the boat body, and a controller configured or programmed to set the first and second propulsion devices to a first axial attitude in which the first and second axes intersect each other rearward of the boat body when an indicated direction is within a reference angle range including a straight-ahead direction of the boat body, and set the first and second propulsion devices to a second axial attitude in which parallelism between the first and second axes is higher than the first axial attitude when the indicated direction exceeds the reference angle range.