A rotary device (e.g., a rotary jet), power generation system, and methods of manufacturing and using the same are disclosed. The rotary jet includes a central axle or shaft, an inlet configured to receive at least one fluid, and a plurality of radial arms in fluid communication with the inlet, configured to rotate around the central axle or shaft. Each radial arm has a nozzle at a distal end thereof and an arc between the inlet and the nozzle. The radial arms extend radially from the central axle or shaft at least in part, and are configured to rotate when the fluid enters the inlet and passes through the radial arms, or when a rotational force is applied to the central axle or shaft. Each nozzle may have an opening facing away from a direction of rotation of the radial arms or facing in a direction parallel with the central axle or shaft.

A watercraft propulsion system is disclosed for an amphibious vessels. The watercraft propulsion system includes a waterjet on each side of the vessel which consist mainly of an impeller, inlet assembly, and stator assembly. The waterjets resists vibrational fatigue and failure through specialized welding between the struts and the inside of the conduit of the inlet assembly. The waterjets can be retrofitted to existing drive shafts to meet the performance requirements of differing amphibious and other marine vessels and to accommodate space limitations. The waterjets are easily installed and removed.

A watercraft propulsion system is disclosed for an amphibious vessels. The watercraft propulsion system includes a waterjet on each side of the vessel which consist mainly of an impeller, inlet assembly, and stator assembly. The waterjets resists vibrational fatigue and failure through specialized welding between the struts and the inside of the conduit of the inlet assembly. The waterjets can be retrofitted to existing drive shafts to meet the performance requirements of differing amphibious and other marine vessels and to accommodate space limitations. The waterjets are easily installed and removed.

A marine vessel includes a hull, a jet pump including an impeller, a plurality of motors, and a transmission to transmit outputs of the plurality of motors to the impeller of the jet pump.

A marine vessel includes a hull, a jet pump including an impeller, a plurality of motors, and a transmission to transmit outputs of the plurality of motors to the impeller of the jet pump.

The present disclosure relates to an underwater thruster, comprising a power part and a propeller, wherein the power part is provided at the upstream of the propeller for driving the propeller to rotate. The underwater thruster further comprises: a water inlet part, which the power part is provided at the upstream or internally of the water inlet part, the water inlet part being provided with a water inlet, one end and the other end of the water inlet part being columnar, and the diameter of radial cross-sections of the water inlet part gradually increasing from one end to the other end of the water inlet part; and a water outlet part, which is provided at the downstream of the water inlet part, one end of the water outlet part being provided with a water outlet, wherein the water inlet part is adjacent to the propeller and provided at the upstream of the propeller, and the propeller is provided inside the water outlet part. According to the present disclosure, by improving the structure of the underwater thruster, the guide stability of the underwater thruster in use is improved, and the kinetic energy utilization rate is increased.

The present disclosure relates to an underwater thruster, comprising a power part and a propeller, wherein the power part is provided at the upstream of the propeller for driving the propeller to rotate. The underwater thruster further comprises: a water inlet part, which the power part is provided at the upstream or internally of the water inlet part, the water inlet part being provided with a water inlet, one end and the other end of the water inlet part being columnar, and the diameter of radial cross-sections of the water inlet part gradually increasing from one end to the other end of the water inlet part; and a water outlet part, which is provided at the downstream of the water inlet part, one end of the water outlet part being provided with a water outlet, wherein the water inlet part is adjacent to the propeller and provided at the upstream of the propeller, and the propeller is provided inside the water outlet part. According to the present disclosure, by improving the structure of the underwater thruster, the guide stability of the underwater thruster in use is improved, and the kinetic energy utilization rate is increased.

In one aspect of the invention, there is provided a modular electrically motorized watercraft (10), the watercraft comprising a hull module (20) and a driveline system (60). The driveline system (60) comprises an electric power module (50) and a driveline module (30). The driveline module (30) is configured to be arranged at an underside of the hull module (20).

In one aspect of the invention, there is provided a modular electrically motorized watercraft (10), the watercraft comprising a hull module (20) and a driveline system (60). The driveline system (60) comprises an electric power module (50) and a driveline module (30). The driveline module (30) is configured to be arranged at an underside of the hull module (20).

A wind-water machine set is an evolving jet machine that moves the internal engine to the outside of the sleeve to work, instead of using a water jet as the main and air-jet as the auxiliary. When a ship uses multiple groups of wind-water machine set, there is a master control center for overall control and coordinated operation. Controlling the propulsion system makes the ship move forward and backward in an orderly manner. Control the surfing system to eliminate the bow water resistance and cooperate with the propulsion system. The steering control system is controlled to make the ship easy to operate the steering. Control the balance system to keep the ship balanced without swaying the roll angle. Control the draught system so that ships do not need ballast water. So that the ship can sail at super high speed, super fuel-efficient and safe.