A system and method of using accumulator(s) to generate electrical power in a marine environment. The system includes a first power source coupled to an electric machine coupled to a hydraulic pump coupled to an accumulator. The first power source is a power supply operable to convert AC to DC, and the accumulator is a high-capacity hydraulic energy storage device. The electric machine configured to operate as an electric motor driving the hydraulic pump in a first direction charges the accumulator. The charged accumulator configured to drive the hydraulic pump in a second direction driving the electric machine configured to operate as an electric generator to generate a second power source. The hydraulic/electric power system also includes a first controller configured to operate a first electrical load powered by the first power source and a second controller configured to operate a second electrical load powered by the second power source.

An electrical distribution system for personal water craft. The primary components include a digital switching device; a series of power lines; and one or more remote controls, a control panel, or both. The digital switching device is preferably a bank of solid state relay switches controlled by an MCU. The control panel also has an MCU. The control panel MCU communicates with the digital switching device MCU. This allows signals from the control panel to travel on a single communication cable to the digital switching device, significantly reducing the control panel footprint compared to prior art control panels. When a radio frequency (RF) receiver is provided, the electrical distribution system may receive signals from a remote control. The remote control may be utilized in addition to or in lieu of the control panel. Power lines run from the digital switching device to wherever power is desired in the vessel.

A turbine system that harnesses energy from natural atmospheric wind and water currents for power generation and storage in a power storage mode, and in a reverse switched operation, sources current to the turbine system from storage power to function in a propulsion mode to propel an associated structure (e.g., boat, aircraft).

A ship having improved power efficiency is provided. The ship comprises: a power grid; a power cost generator which determines the cost of power; a generator which is connected to the power grid and analyzes the cost of power so as to autonomously determine whether to produce power; an energy storage device which is connected to the power grid and analyzes the cost of power so as to autonomously determine whether to store power; and a load which is connected to the power grid and analyzes the cost of power so as to autonomously determine whether to use power.

A hybrid electrical and mechanical ship propulsion and electric power system, includes a first mechanical power plant configured to drive a first propeller via a first shaft. There is a second electrical power plant configured to drive a second propeller via a second shaft. The second electrical power plant includes HTS generators and a high temperature superconductor (HTS) motor interconnected to the second shaft. There is a first electrical network to which the HTS motor is connected in order to energize the HTS motor to drive the second propeller via the second shaft.

A power system having a plurality of gensets compares the instantaneous power consumption with a plurality of power consumption zone boundaries and classifies the power consumption into a selected zone. Each zone includes a corresponding base power value and a corresponding dynamic range value, which are apportioned among the plurality of gensets.

An actuator comprises a housing and a drive tube assembly disposed within the housing. The drive tube assembly includes a drive tube provided with internal threads, a piston nut provided with external threads which threadedly engage the inner threads of the drive tube, and an output shaft connected to the piston nut. A motor rotates the drive tube to cause the piston nut to reciprocate along a length of the drive tube and the output shaft to reciprocate relative to the housing. There are bearings which transmit axial loads from the drive tube to the housing and transmit radial loads from the drive tube to the housing.

An air-cooling device for a boat includes a plurality of misting modules and a pump. Each misting module comprises a housing that defines an interior space. The housing has a back that is coupled to a sidewall of a boat. A plurality of slots is positioned in the housing and is configured for air to enter the interior space. A plurality of orifices is positioned in a front of the housing. A plurality of fans is coupled to the housing and positioned in the interior space. Each fan is positioned in an associated orifice. A plurality of nozzles is coupled to the front of the housing. The pump is operationally coupled to the nozzles and a source of water. The pump is positioned to pump water through the nozzles to form a mist. The fans are configured to disperse the mist to cool an area proximate to the housing.

A marine vessel (10) includes: a hull (11); an electric propulsion portion (15) that propels the hull (11); a water tank portion (20) that is provided on the hull (11) and is capable of storing water in the water tank portion; a float portion (40) that is provided within the water tank portion (20) so as to be movable upward and downward; and a battery case (30) that is attached to the float portion (40) and is capable of storing a detachable portable battery (35) which becomes an electric power source of the electric propulsion portion (15) in the battery case.

This electrical energy distribution system comprises assembly of electrical energy generators each driven by a heat engine and supplying a distribution network; means for recovering the heat energy generated during the operation of the heat engines and for vaporizing a working fluid; steam turbine driven by the working fluid and associated with a generator connected to the distribution network for converting the recovered heat energy into electrical energy and at least one frequency converter arranged between the distribution network and an electrical load. It comprises means for controlling the frequency of the distribution network, where the flow rate of the vaporized working fluid is regulated to a maximum value.