An automatic steering device may include a route calculator, an indirect target point calculating module, a command steering angle calculating module, and a steering controlling module. The route calculator may calculate a route of a ship based on positions of a plurality of target points. The indirect target point calculating module may calculate an indirect target point ahead of the ship. The command steering angle calculating module may calculate a command steering angle based on a positional relation between the route and the indirect target point. The steering controlling module may control a steering mechanism of the ship based on the command steering angle.

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.

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.

A tiller control for boats comprising a brake that holds a control line in a static position. In turn, the control line holds the tiller and rudder of the boat in a static position. The amount of pressure applied to the control line by the brake is adjustable. Pressure applied to the control line by the brake may be adjusted so that the tiller and rudder are held in a generally static position, but the tiller control can be manually overridden.

A tiller control for boats comprising a brake that holds a control line in a static position. In turn, the control line holds the tiller and rudder of the boat in a static position. The amount of pressure applied to the control line by the brake is adjustable. Pressure applied to the control line by the brake may be adjusted so that the tiller and rudder are held in a generally static position, but the tiller control can be manually overridden.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A personal watercraft (PWC) is provided. The PWC includes a body having a bottom portion, a top portion covering the bottom portion, and a storage space disposed between the top and bottom portions; and a power train disposed on or in the body. The power train includes a motor, a battery, a controller, an impeller, and an impeller water pump, and is configured for moving the body through water. Further, the body and the power train collectively weigh about 150 pounds or less.

A narrow beam rotomolded foam filled catamaran that incorporates regular points of attachment through the deck and a tubular frame that is highly customizable with modular accessories making it ideal for maneuverability, stability, durability, transportation, storage, and customization.

A narrow beam rotomolded foam filled catamaran that incorporates regular points of attachment through the deck and a tubular frame that is highly customizable with modular accessories making it ideal for maneuverability, stability, durability, transportation, storage, and customization.

A ship reverse-run detection system includes a memory, and a processor coupled to the memory, wherein the processor is configured to: detect a direction of change in a position of a ship based on position information of the ship which is detected by a position detection device which is mounted on the ship, specify a traveling direction associated with a navigation region of the ship which is specified based on the position information, by referring to a storage which stores the navigation region and the traveling direction in association with each other, and detect reverse run of the ship in the navigation region based on the magnitude of an angle between the direction of the change and the traveling direction.