Abstract: A marine power system including multiple of fuel cells, multiple of D C/AC converters and at least one propulsion motor. In the marine power system, each fuel cell of the multiple of fuel cells is connectable to an input of a DC/AC converter of the multiple of DC/AC converters and at least one group of multiple of DC/AC converters is connectable to the at least one propulsion motor to provide variable frequency and amplitude voltage to the at least one propulsion motor. Further, at least one of the multiple of DC/AC converters is connectable to a fixed frequency AC bus to provide voltage with a fixed frequency and amplitude to the fixed frequency AC bus.

Abstract: A device for coupling a propulsor to a marine vessel. The device includes a mounting bracket configured for attachment to the marine vessel. A support frame has a carriage and is configured for the propulsor to be coupled thereto, where the carriage is configured to slidably engage with the mounting bracket into a fixed position. A member is manually engageable to prevent the carriage from sliding out of the fixed position. The propulsor is coupled to the marine vessel by sliding the carriage into the fixed position and engaging the member, where the propulsor is operable to propel the marine vessel in water when the carriage is in the fixed position, and where the propulsor is configured for decoupling from the marine vessel by disengaging the member and sliding the carriage out of engagement with the mounting bracket.

Abstract: In at least one embodiment, the invention provides a retrofit for existing water treatment systems where the retrofit includes a particulate separator with a connection member and a discharge module. In a further embodiment, the invention includes a water treatment system combined with at least one of the following: a particulate separator, a supplementary inlet, and a waveform disk-pack turbine.

Abstract: A propulsion device for a marine vessel. The propulsion device includes a base configured to be coupled to the marine vessel. A propulsor is pivotally coupled to the base and pivotable into and between a deployed position and a stowed position. The propulsor is configured to propel the marine vessel in water when in the deployed position. A lock device has a rigid member and is selectively engageable such that the rigid member prevents the propulsor from pivoting away from the stowed position.

Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.

Abstract: The present application relates to the field of underwater propeller, and more particular, to a multifunctional underwater propeller, which includes a propeller body. The propeller body is detachably connected with a handle, and a surface of the propeller body is connected with an adapter structure for detachably connecting external equipment. The adapter structure includes a connecting piece and a slide rail, and the connecting piece is in plug-in connection with the slide rail, and configured for detachably connecting the external equipment.

Abstract: A floating motorized picnic table includes a floatation device; a base; benches attached to the base; tabletop supports; a tabletop attached to the tabletop supports; a motor; and a battery electrically connected to the motor. The base frames and rests upon the floatation device. The benches include bench boards attached above and parallel to the floatation device. The tabletop supports are attached between the benches. The tabletop includes top boards. The battery is mounted on the base under the top boards. The motor is mounted at one end with a retractable keel located adjacent to the opposite end.

Abstract: A field configurable autonomous vehicle includes modular elements and attachable components. The vehicle can be assembled from these modular elements and components to meet desired mission and performance characteristics without the need to purchase specially designed vehicles for each mission. The vehicle can include a modular propulsion system with magnetic drive.

Abstract: An electrical power system for a watercraft including a first electrical power plant configured to operate in a variable frequency mode to output variable frequency power to a first electrical network and a fixed frequency mode to output fixed frequency power to a second electrical network. There is a first electrical load including a first high temperature superconductor (HTS) motor connected to the first electrical network and a second electrical load connected to a second electrical network. A controller selectively connects the first electrical power plant to the first electrical network and operates the first electrical power plant in a variable frequency mode to output variable frequency power to power the first HTS motor and selectively connects the first electrical power plant to the second electrical network and operates the first electrical power plant in a fixed frequency mode to output fixed frequency power to power the second electrical load.

Abstract: A field configurable autonomous vehicle includes modular elements and attachable components. The vehicle can be assembled from these modular elements and components to meet desired mission and performance characteristics without the need to purchase specially designed vehicles for each mission. The vehicle can include a modular propulsion system with magnetic drive.

Abstract: A multifunction touch-switch system is provided. The multifunction touch-switch system is configured to control devices (for example LED lighting) by a touch switch. The multifunction touch-switch system may be configured to be waterproof and vibration resistant for use in a marine environment, for example aboard a marine vehicle. The multifunction touch-switch system may be configured to control multiple functions of multiple devices with a single touch sensor. In addition to a controller and a housing for the controller, the multifunction touch-switch system may also comprise an indicator light.

Abstract: A battery enclosure for a personal watercraft is provided. Different configurations of the battery enclosure are disclosed, as well as different arrangements of the battery enclosure within the personal watercraft and with respect to other features of the personal watercraft. According to one embodiment, a personal watercraft includes a deck and a hull defining an interior volume. An electric motor is housed within the interior volume, the electric motor being operable to rotate a drive shaft. A battery pack having a battery enclosure housing one or more batteries is also positioned within the interior volume. A portion of at least one battery of the one or more batteries is positioned vertically above the drive shaft.

Abstract: The present disclosure relates to a drive arrangement for propelling a boat, for example a kayak, having an electric drive motor with a shaft, a receiving device for receiving the shaft and a holder for holding the receiving device on the boat. In some embodiments, the receiving device is pivotable for pivoting the electric drive motor between an operating position and a tilt position relative to the holder. A switchable fixing device is provided for fixing the receiving device in the operating position. The fixing device has an overload protection for disconnecting the fixing in the operating position when a predetermined pivot force in the direction of the tilt position is exceeded.

Abstract: A passive generator system for a marine vessel using an intake manifold having an opening at the bottom of the hull of the vessel. The intake manifold tapers to a point at the rear of the opening and extends upward to an intake funnel that reduces down to a conduit. The conduit has a first portion angled relative to the opening which joins to a second portion at an elbow. The second portion of the conduit extends horizontally to a rear of the vessel, to a conduit exit where water can exit the conduit. An impeller is location in the first portion of the conduit that drives a generator through a shaft between the impeller and the generator, the shaft passing through a top of the first portion of the conduit.

Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a propeller. The rotor rotates relative to the stator on an axis to generate a rotational output. The rotational output is provided to the propeller to power the marine propulsion apparatus. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the axis. A portion of a housing of the motor extends into the aquatic environment to facilitate heat dissipation.

Abstract: A system and a method produce electrical power for ship propulsion. Power and fuel modules are configured for modular use during travel. The power and fuel modules may be standard freight size containers so that the amount of fuel and power for a trip may be adjusted based on the needs of the trip. A control system may be automated to control loading and unloading of fuel or power modules into the power distribution system, connection or disconnection of fuel or power modules, and adjust distribution of power to the ship's electrical grid based on consumption demands.

Abstract: In an aspect the present disclosure is directed to an electric watercraft having a warning light, wherein the electric watercraft includes at least an electric propulsor configured to propel the electric watercraft in a fluid. Electric watercraft further include a plurality of battery packs located beneath a deck of the electric watercraft and configured to poser the at least an electric propulsor. Electric watercraft further include a warning light located on at aft facing surface of the electric watercraft and configured to be viewable from behind the electric watercraft. The electric watercraft further includes at least a controller located on the electric watercraft and in communication with the at least a warning light, wherein the controller is configured to receive at least a warning signal and illuminate the at least a warning light as a function of the at least a warning signal.

Abstract: A propulsion device for a marine vessel. A base is configured to be coupled to the marine vessel. A shaft includes an upper segment and a lower segment each extending along a length axis, wherein the upper segment is coupled to the base. A propulsor is coupled to the lower segment, where the propulsor is configured to propel the marine vessel in water. A shock absorber includes a resilient member that resiliently couples the upper segment and the lower segment together, where the resilient member dampens impact forces received at the lower segment and reduces transfer of the impact forces to the upper segment.

Abstract: A stowable propulsion system for a marine vessel. A base is configured to be coupled to the marine vessel. A shaft has a proximal end and a distal end with a length axis defined therebetween, where the shaft is pivotably coupled to the base and pivotable about a transverse axis between a stowed position and a deployed position, and where the distal end is closer to the marine vessel when in the stowed position than in the deployed position. A gearset is engaged between the shaft and the base, where the gearset rotates the shaft about the length axis when the shaft is pivoted between the stowed position and the deployed position. A propulsion device is coupled to the distal end of the shaft. The propulsion device is configured to propel the marine vessel in water when the shaft is in the deployed position.

Abstract: Electrical power distribution systems with a bypass unit that electrically engages one of two alternate units for powering a load while electrically isolating the other using a power transfer switch with first and second contactors and mechanical and electrical interlocks to allow a technician to access one of the alternate units when de-energized and in position while the other of the alternate units is energized and powering the load.

Abstract: A sailing assisting system is provided in which a sailing assist for a vessel which enters a specific water area where sailing of the vessel is limited is realized through a simple configuration and in which a steersman is prevented from having strange feeling. A sailing assisting system includes movable controlling devices (a shift and throttle controller, a steering device, a trim switch), actuators (a rotational shaft drive unit, a shaft drive unit, a switch drive unit) for driving these controlling devices, and a control unit for executing a notification operation and controlling the actuators to limit movable ranges of the controlling devices if a hull is determined to stay within a specific water area where the sailing of the hull is limited based on information on the specific water area and information on the position of the hull.

Abstract: A battery enclosure for a personal watercraft is provided. Different configurations of the battery enclosure are disclosed, as well as different arrangements of the battery enclosure within the personal watercraft and with respect to other features of the personal watercraft. According to one embodiment, a personal watercraft includes a deck and a hull defining an interior volume. An electric motor is housed within the interior volume, the electric motor being operable to rotate a drive shaft. A battery pack having a battery enclosure housing one or more batteries is also positioned within the interior volume. A portion of at least one battery of the one or more batteries is positioned vertically above the drive shaft.

Abstract: Embodiments include devices, system and processes for facilitating ultra-short range detection of obstacles using a PAS sensor. A process may include obtaining a correlation of at least two characteristics of a transducer; determining a given transmission frequency and selecting a reverberation time desired for the transducer; obtaining a damping ratio corresponding to the selected reverberation time; generating a ranging signal command; generating a damping signal command; and outputting each of the ranging signal command and the damping signal command. The ranging signal command may instruct a PAS sensor to drive the transducer to output a ranging signal at the given transmission frequency, at a transmission amplitude, and at a transmission phase and the damping signal command results in a dampening, at the damping ratio, of transducer reverberations arising from the ranging signal. The damping ratio may be between thirty percent (30%) and eighty percent (80%) of the transmission amplitude.

Abstract: A handheld underwater aircraft includes a battery compartment (12) and propellers. There are at least two propellers, which are symmetrically distributed on both sides of the battery compartment (12), and are connected to the battery compartment (12). A special design with axes of the propellers being unparallel with an axis of the battery compartment (12) is adopted, and unparallel included angles make component forces generated by the various propellers in a direction of motion of a non-underwater aircraft offset each other, and enable the underwater aircraft to maintain balanced and forward-forward motion. The design with the axes of the propellers being unparallel with the axis of the battery compartment (12) leads to a little power loss, but avoids a larger power loss caused by the impact of water on the human body, thereby comprehensively improving the thrust of the underwater aircraft in use.

Abstract: A multifunction touch-switch system is provided. The multifunction touch-switch system is configured to control devices (for example LED lighting) by a touch switch. The multifunction touch-switch system may be configured to be waterproof and vibration resistant for use in a marine environment, for example aboard a marine vehicle. The multifunction touch-switch system may be configured to control multiple functions of multiple devices with a single touch sensor. In addition to a controller and a housing for the controller, the multifunction touch-switch system may also comprise an indicator light.

Abstract: A trolling motor includes a rotatable trim module which effectuates trim adjustment of the trolling motor by adjusting a vertical position of a motor shaft assembly. A rotatable steering module is mounted below the trim module. The steering module and trim module are assembled on a rotatable motor shaft having a motor mounted at one end of the motor shaft. A conductive cord is coiled around the motor shaft. The conductive cord is configured to transmit electrical power from a power source to an internal control module and a drive motor in the trim module. In further embodiments, the conductive cord also transmits control signals from an internal control device to an internal control module in the trim module.

Abstract: A system for providing solar power to a watercraft includes a hull having an outer surface, defining a recess extending inward and offset from the outer surface by a distance, and configured to float on water. The system further includes a solar panel configured to fit within the recess and having a thickness that is substantially equal to the distance such that an outer edge of the solar panel is substantially aligned with the outer surface of the hull.

Abstract: A drive for a boat includes a housing that is arranged underwater during operation, and that houses an electric motor that drives a propeller. The housing includes a cooling section that includes a coolant duct.

Abstract: An electric outboard motor includes an outboard motor main body that includes an electric motor and a tiller handle that turns together with the outboard motor main body with respect to a hull. The tiller handle includes a handle bar that turns together with the outboard motor main body with respect to the hull, an accelerator grip that is rotatable with respect to the handle bar and that is rotated when the electric motor is rotated, and a shift switch located closer to a distal end of the accelerator grip with respect to a proximal end of the accelerator grip and that is operated when a shift state of the outboard motor main body is switched between a forward mode and a reverse mode.

Abstract: The invention relates to a swimming and diving aid, having a hull which comprises a flow channel or with which a flow channel is associated, a motor-driven water acceleration arrangement, in particular a propeller, being associated with the flow channel; having a support surface for an upper body on an upper side of the hull; having grips mounted on the swimming and diving aid, control elements for controlling the water acceleration arrangement by means of an associated motor controller being provided on the grips; and having a display, facing toward the support surface, for showing operating parameters of the swimming and diving aid.

Abstract: The invention relates to a pod propulsion device including a motor casing (3) and a strut (2), which strut (2) is connected at a lower part thereof to the motor casing (3) and is arranged to be connected at an upper part thereof to a hull (1) of a ship. The motor casing (3) includes a housing (6) enclosing an electric motor (5) with a stator and a rotor, which housing (6) has an upper portion. According to the invention a stationary heat conducting means (7) is arranged in contact with said upper portion, which heat conducting means (7) is arranged to conductively connect the upper portion to at least one outer wall (21) of the strut (2). The invention also relates to a ship provided with such pod propulsion device and to a method for cooling a pod propulsion device.

Abstract: An electric power system includes electric energy sources and control equipment for controlling the electric energy sources in accordance with a target value of electric power produced by the electric power system. The control equipment activates and deactivates the electric energy sources based on a control value and on activation and deactivation limits. The control value can be the target value or the actual value of the electric power. The control equipment controls active electric energy sources according to the target value and according to power sharing defined for the active electric energy sources. The activation and deactivation limits as well as activation and deactivation order of the electric energy sources can be determined based on properties of the electric energy sources and on a prevailing operational situation of the electric power system.

Abstract: Disclosed are a method and a virtual sensor system for determining the speed through water of a marine vessel. The method includes obtaining propeller revolutions per minute and at least one of torque at propeller, propulsion power, thrust and engine fuel flow, obtaining speed over ground or logged data from one or more speed through water logs of the vessel and using the obtained data and hydrodynamic modelling to determine the speed through water of the vessel.

Abstract: A marine vessel, system, and process provides for reducing or eliminating fuel consumption and emissions of marine vessels. System and method for charging an electricity storage element of an energy storage system of a floating marine vessel may include applying a power source from a marine platform to an electrical power bus of the floating vessel to charge the electricity storage element. A power generator of the marine vessel configured to supply electrical power to the power bus may be configured from an ON state to an OFF state.

Abstract: A modular electric propulsion device for ships according to an embodiment of the present disclosure may be easily mounted in a ship after removing an existing engine from the ship because a switch board for power distribution, and an inverter and a motor for power conversion are modularized inside a single casing, and may be installed in a minimum space for installation because a distance between motor rotation shafts may be made close to each other even when two modular electric propulsion devices for ships are mounted in a dual installation manner.

Abstract: A drive with integrated dynamic load control includes a three-phase asynchronous motor having three phase legs connected in a star circuit, each phase leg having a winding having a coil end connected to a common star point. A load control circuit has a regulating module, an ammeter, a voltmeter and first and second switches. The ammeter and voltmeter detect a phase current and a phase voltage in one phase leg. The regulating module calculates an active power of the phase leg and a total active power of the motor responsive to the phase current and phase voltage. The switches are arranged in two of the phase legs between the respective coil end and the star point and the regulating module interrupts the two phase legs by using the switches when the active power, the total active power or a torque calculated from the total active power exceeds an adjustable limit value.

Abstract: A system and method for a stand up paddle board that utilizes a vertical hollow protrusion through the paddle board that supports the propulsion system and is comprised of two assemblies; a motor and propeller assembly, and a battery and control assembly, the location of the hollow protrusion mitigating the negative aspects of propelling the board with a propeller and the extra weight of the motorized system on the board's balance and maneuverability characteristics.

Abstract: A drive system mounted to the hull of a buoyant vessel, the drive system having a rectifier, a generator, an AC bus in communication with shore power or a charging system and the rectifier, a DC bus in communication with the rectifier, at least one energy storage system, an inverter, a prime mover, a load regenerating device, and a control and monitor system which has predefined specifications for at least one of: storage units of at least one energy storage system; stored therein and wherein the control and monitor system is adapted to: automatically control the DC/DC converters, relieve a current draw from one or more storage units, provide charging current, and automatically draw power and redirect energy.

Abstract: The present disclosure is directed towards a power distribution system for a marine vessel. The power distribution system comprises auxiliary, first and second buses and first and second propulsors for propelling the marine vessel. A first power generation system is electrically connected to the first bus and operably connected to the first propulsor. A second power generation system is electrically connected to the second bus and operably connected to the second propulsor. The first and second buses are electrically connected to the auxiliary bus such that electrical power is transferable between the first and second power generation systems for driving the first and/or second propulsors.

Abstract: A surfboard with a surfboard body (1) extending along a longitudinal direction (L) and having an upper surface and a bottom surface. An electrical battery pack (2) is removably positioned in an upper compartment accessible from the upper surface. An electrically driven water-jet configured to propel the surfboard is provided with electrical power from the electrical battery pack. The electrically driven water-jet is provided in a propulsion module (3) that is removably positioned in a lower compartment accessible from the lower surface. The upper compartment and the lower compartment partly overlaps each other as seen along the longitudinal direction (L).

Abstract: A lateral marine thruster is disclosed for mounting to an outboard motor. The lateral marine thruster has a bi-directional thruster with a central body portion and at least one propeller, the central body portion housing at least one high torque electric motor, which is rotatably coupled to at least one propeller, the rotational axis of the high torque electric motor and the propeller being oriented perpendicular to the centerline of the outboard motor. The bi-directional thruster is secured to the anti-cavitation plate or a similar mounting location of the outboard motor to provide lateral thrust for ease of docking or mooring a vessel.

Abstract: A system, methods and apparatus for powered monofin that propels a swimmer through water uses one of two modes of power: 1. An electric-assist mode, in which the propulsor responds to a swimmer's kick by multiplying the work of the swimmer; 2. Inverse mode, in which the propulsor deactivates when the swimmer is working. In this mode, propulsion is inversely related to the work of the swimmer. As the swimmer does more work, power from the monofin is reduced, to a predetermined, average level of propulsion. As the swimmer does less work propulsion increases to the predetermined level.

Abstract: The present disclosure relates to the field of outboard engines, particularly to a direct-drive electric outboard engine and an outboard engine system for alleviating the problem of the existing outboard engines, i.e., incapability of simultaneously meeting requirements on rev and torque of different types of ships. The direct-drive electric outboard engine includes an external rotor mechanism and a stator mechanism; wherein the external rotor mechanism includes an external stator and an impeller; the external rotor is located outside the stator mechanism; and the impeller is located outside the external rotor.

Abstract: A trolling motor includes a head unit, a propulsion unit, and a shaft coupling the head unit to the propulsion unit. A shaft support couples the shaft to a mount base, which may be coupled to watercraft's deck. The shaft support is pivotable with respect to the mount base to move the trolling motor between a deployed position and a stowed position with respect to the deck. The trolling motor further includes a spring and damper combination coupled between the mount base and the shaft support, wherein a spring portion of the spring and damper combination provides a spring force to assist in pivoting the shaft support away from the deck, and a damper portion of the spring and damper combination provides a damping force to slow pivoting of the shaft support towards the deck and/or a metal-reinforced, self-lubricating bearing pivotably coupling the shaft support to the mount base.

Abstract: A trolling motor is provided comprising a motor housing, a motor controller, and a down tube assembly extending from the motor housing. When the trolling motor is in operation on a boat, the down tube assembly will support the motor housing submerged in water. The motor controller is mounted to the down tube assembly.

Abstract: A personal propulsion device for use with a floatation device includes a pair of propulsion units. Each propulsion unit comprises a power module, a motor, and a propeller. The motor is operationally coupled to the power module and the propeller so that the motor is positioned to selectively rotate the propeller to impart a force on water. Each propulsion unit is configured to be grasped in a respective hand of a user who is positioned on a floatation device. The user is positioned to submerge the propulsion unit in a body of water so that the floatation device is motivated across a surface of the body of water.

Abstract: A floating vessel with gearless pod propulsor and counter rotating propellers is secured to a hull, each pod having a lead propeller and a trailing propeller, each propeller connected to a shaft connected to either a stator and rotor or a hydraulic motor. A lead propeller turns in a first direction and a trailing propeller turns in an opposite direction simultaneously, generating thrust for the floating vessel along a thrust vector using the counter rotation of the trailing propeller to recover swirling energy from the lead propeller improving propulsive efficiency of the floating vessel. The pod is positioned below a water line of the floating vessel providing propulsion for the floating vessel without gears.

Abstract: A propeller propulsion system for a watercraft includes at least one electric motor and a propeller which can be driven by the electric motor. The propeller is a surface piercing propeller. The propulsion system includes a box-like body having a side wall on which the electric motor is fixed and a cover part on which an outdrive of the surface piercing propeller is applied. The side wall and the cover part include holes through which a shaft of the motor and a shaft of the outdrive respectively pass. The box-like body includes means for transmission of motion from the drive shaft to the outdrive shaft, and the propulsion system includes means for fixing the box-like body to a transom of the watercraft.

Abstract: Provided is a system for protecting submerged components of a watercraft from collision with a submerged object or a floor of a body of water. The system includes a depth sensor configured to measure a water depth beneath the watercraft, an actuated mechanism configured to adjust a depth of at least one of the submerged components, and a controller in communication with the depth sensor and the actuated mechanism. The controller is operable to receive the measured water depth and control the actuated mechanism to adjust the depth of the at least one submerged component as a function of the measured water depth to prevent the at least one submerged component from colliding with the submerged object or floor of the body of water.

Abstract: Disclosed is a wet suit, including: an upper jacket 100 for, putted on an upper body of a user, injecting or discharging air into an interior by the user's operation or a predetermined operation; a pair of lower pants 200 putted on a lower body of the user; and a propulsive generation portion 300 for, detachably putted on a waist of the user, generating a self-propulsive force according to the user's operation or a predetermined operation to generates a propulsive force for pushing water to a rear direction of the user.