Abstract: The presently disclosed boat anchoring system may include a first section and a second section. The first section may include a first proximal end region and a first distal end region. The second section may include a second proximal end region and a second distal end region. The first section may at least partially surround the second section. A geologic anchoring system may include a body section, a boring section and a lock. The body section may include a first proximal end region and a first distal end region. The boring section may include a second proximal end region and a second distal end region. The first section may least partially surround the second section. A lock may be included on the second section. The lock may engage the first section at an infinite number of contact points on the first section.

Abstract: A watercraft drinking vessel holder and method for retaining a drinking vessel on a watercraft is configured to contain a can, cup, or water bottle for easy access during paddle boarding. The vessel holder attaches to a flat watercraft through multiple crisscrossing stretch cords that pass through elongated slots forming through the longitudinal of the vessel holder. The crisscrossing stretches cords retain the vessel holder substantially upright on the watercraft. The vessel holder has a flat base designed to sit flush against the surface of watercraft. A sidewall projects upwardly from the base. The sidewall receives drinking vessel, and substantially encapsulates drinking vessel. The sidewall defines multiple slots extending along the longitudinal in a spaced-apart, parallel relationship. The slots enable passage of elastic cords that crisscross therethrough. The cords are pulled down towards the base end of the sidewalls to firmly secure the vessel holder to the watercraft.

Abstract: In an embodiment, a helm device comprises a steering shaft extending in a first direction, a housing, a tilt base, a pair of tilt mechanisms which supports the housing to make the housing rotatable with respect to the tilt base about a tilt axis, and a lock mechanism which fixes an angle of the steering shaft. Each of the pair of tilt mechanisms comprises a shaft member projecting from a side portion of the housing, a bracket provided on the tilt base and comprising a hole portion into which the shaft member is inserted rotatably, and a bushing disposed between the shaft member and the hole portion.

Abstract: A method for preserving electrical power in a marine vessel. The method includes operating a variable operating device according to an original setting, measuring an actual system voltage for the marine vessel, and comparing the actual system voltage measured to a target system voltage. The method further includes adjusting the operation of the variable operating device from the original setting based on the comparison of the actual system voltage to the target system voltage, where adjusting the operation changes the electrical power usage in the marine vessel.

Abstract: An underwater thruster with improved guide stability and increased kinetic energy utilization rate comprises a power part and a propeller, wherein the power part is provided upstream of the propeller for driving the propeller to rotate. The underwater thruster further comprises a diversion part which is provided between the water inlet part and the water outlet part and is connected with the water inlet part and the water outlet part respectively in a plug-in manner, to uniformly disperse water entering the water inlet part to blades of the propeller.

Abstract: A power supply system for a water-bound device and to an operating method, the water-bound device having an electric shaft and in particular a first zone and a second zone, the system includes: a first DC voltage bus for a first DC voltage and a second DC voltage bus for a second DC voltage; a first energy source and a second energy source, the first energy source being provided in the first zone for supplying at least one DC voltage bus of the at least two DC voltage buses, and the second energy source being provided in the second zone for supplying at least one DC voltage bus of the at least two DC voltage buses, the energy supply system being structured at least partially in a zone-dependent manner.

Abstract: Boats can include a swim platform with an integrated system of steps that can be selectively deployed and retracted. Such platforms can be attached to a transom of a boat or can be fabricated as an extended portion of the boat's hull. In another embodiment, deployable steps can be integrated with a boat's hull as a side-entry door. In order to reconfigure the step system into a deployed configuration, a linkage is actuated that causes the step system to unfold, forming steps (or a seating configuration) at least partially below the water line. Since the steps can be deployed below the water line, a swimmer can more easily get on board the boat.

Abstract: A cowling is for a marine drive. The cowling has first and second cowl portions for enclosing a powerhead, and a latching device which is movable into a latched position in which the powerhead is enclosed by the first cowl and second cowl portions and an unlatched position in which the second cowl portion is movable with respect to the first cowl portion so that the powerhead is accessible. The latching device has an electric actuator configured to automatically move the latching device from the latched position to the unlatched position and a manually-operable input device which is accessible from outside of the cowling and is configured to actuate the electric actuator to thereby automatically move the latching device from the latched position to the unlatched position.

Abstract: An electric power generator for marine vessels includes a containment enclosure, an internal combustion engine housed in the containment enclosure and including a drive shaft, rotating at a variable rotation speed, an alternator housed in the containment enclosure and configured to receive mechanical power from the internal combustion engine and to convert it into electric power, a second cooling circuit configured to cause sea water to circulate, and an electrical power converter connected to the alternator to receive an input current, having an input frequency, and to convert it into an output current, having an output frequency. The second cooling circuit includes a first heat exchanger configured to allow heat exchange between the sea water and the electrical power converter.

Abstract: An electrically motorized watercraft may include a hull module and a driveline system. The driveline system may include an electric power module and a driveline module. The driveline module may be arranged at an underside of the hull module.

Abstract: There is provided an amphibious vehicle for use on land and water comprising lateral floaters which increases the stability of the vehicle when in water. While on land, the lateral floaters may be retracted within the body of the vehicle to reduce the width of the vehicle.

Abstract: an Axial Flux Propulsion System for an Electric Boat which includes interconnecting subsystems including a mounting system, a traction system, a transmission system, an electrical power distribution system, a control system, and a fluid management system among other boat systems. The traction system being an axial flux motor/generator.

Abstract: A method of controlling an adjustable exhaust system for a marine engine includes receiving a vessel location of a marine vessel having an adjustable exhaust system and identifying a desired position of the bypass valve based on the vessel location and/or a current time. If the bypass valve is not in the desired position, an instruction is generated to adjust the bypass valve to the desired position to change a noise level generated by the adjustable exhaust system.

Abstract: A method of controlling a marine drive on a marine vessel includes receiving a trim position instruction to adjust a trim position of the marine drive, receiving a steering position of the marine drive, determining an allowable steering angle range based on the trim position instruction and/or the adjusted trim position of the marine drive, and controlling a trim actuator to adjust the trim position of the marine drive based on the trim position instruction, the steering position, and the allowable steering angle range such that the steering position of the marine drive remains within the allowable steering angle range for the adjusted trim position.

Abstract: A watercraft comprises a motor, an inertial mass, and a fin. The motor oscillates the inertial mass about an axis, producing a torque reaction on and oscillation of the motor. Oscillation of the motor is communicated to the fin, producing thrust. The system can be operated in reverse, to generate electric power when the system is in a flowing stream of thrust fluid.

Abstract: A driving unit for an electric tunnel thruster. Such driving unit includes an electric motor, a controller and a support for mounting the electric motor and its controller on a tunnel of the tunnel thruster. The electric motor and the controller have separate housings and are mounted separately from each other to the electric motor support that is also a heat conductive radiator element for cooling the controller, and at least one heat radiating surface of the controller is contacted to at least one heat-absorbing surface of the electric motor support.

Abstract: Example steering control systems for multiple devices are provided herein. A system includes a trolling motor assembly having a propulsion motor and a steering actuator and a sonar assembly comprising a transducer assembly and a directional actuator. The system further includes a user input assembly that is configured to detect user activity related to controlling operation of the trolling motor assembly and operation of the sonar assembly. The system further includes a processor that is configured to determine a direction of turn based on user activity, generate an electrical turning input signal indicating the direction of turn, and direct one of the steering actuator and the directional actuator, via the turning input signal, to rotate one of the propulsion motor and the transducer assembly, respectively, in a direction of turn based on the turning input signal.

Abstract: In a marine hybrid system which includes an engine, an electric motor, a thrust generation device, and a clutch mechanism configured to be able to switch connection states therebetween, if it is determined that the engine is in an overload condition, the clutch mechanism is controlled such that a load of the engine is reduced.

Abstract: A wheel-legged amphibious mobile robot with a variable attack angle, which belongs to the technical field of robot structure technology. The robot includes three parts: motion unit, body trunk and power unit. As a key structure, the motion unit mainly includes a moving mechanism, a wheel assembly, a telescopic mechanism and a transmission device. The robot drives the telescopic mechanism to reciprocate linearly through a gear and rack set, and pushes “legs” to expand and retract, so as to realize a mutual switching between a wheeled mode and a gait mode. Under transmission of bevel gear set, the blades can rotate at any same angle at the same time, to change the attack angle and realize the steering. The robot provided by the present disclosure can effectively adapt to a complex and harsh amphibious environment, and meet a series of operation requirements such as rapid movement, obstacle climbing, underwater steering.

Abstract: The present invention discloses a modular underwater robot and a control method therefor. The modular underwater robot includes support plates, a first chamber, a second chamber, and a power assembly, where the supporting plates are stacked, and front end edges and rear end edges of the support plates are respectively provided with a first hollow portion and a second hollow portion; the first chamber is disposed in the first hollow portion; the second chamber is disposed in the second hollow portion, and the second chamber and the first chamber are in a same horizontal position; and the power assembly includes fixed vector thrusters and vertical thrusters. As such, the fixed vector thrusters can enable the modular underwater robot to move forward, backward, or rotatably, so that flexibility of the modular underwater robot can be improved.