Wakeboats that include an aquatic invasive species control apparatus are provided. These wakeboats can include: a wakeboat with a hull; at least one throughhull fitting in the hull of the wakeboat; an irradiation chamber in fluid communication with the at least one throughhull fitting, the irradiation chamber having a radiation source; and at least one water destination aboard the wakeboat. Methods for irradiating invasive aquatic species aboard a wakeboat are also provided. The methods can include: receiving water from outside the wakeboat hull; and irradiating water aboard the wakeboat prior to discharging the water.

A power system for supplying electric power from shore-side to a vessel is presented. The power system includes one or more shore-side converters (101-112) for receiving electric power from a shore-side alternating voltage network (137) and for producing one or more direct voltages. Each shore-side converter can be a controllable converter for controlling the produced direct voltage to be suitable for the vessel in accordance with a control signal received from the vessel, or the vessel may include a direct voltage converter for converting the direct voltage received from the shore-side to be suitable for the vessel. The vessel can be an electric vessel which includes a chargeable battery (132) for supplying electric power to the propulsion system (135) of the vessel.

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.

Provided is a new binary power generation system that, in the binary power generation system using exhaust gas as a heating source, maximizes the power generation amount while considering the sulfuric acid dew point temperature of the exhaust gas. In this binary power generation system, corrosion due to sulfuric acid is prevented. Provided is a binary power generation system including a binary power generation apparatus that generates power by vaporizing a power generation medium using heat of exhaust gas output from a drive apparatus, wherein the binary power generation apparatus includes a control section that controls a mass flow rate of the power generation medium based on at least a sulfur concentration of the exhaust gas.

A system for limiting power to a plurality of on-line consumers includes an operating characteristic sensor associated with each of a plurality of prime movers and a controller. The controller is configured to determine a maximum torque capability of each of the plurality of prime movers, determine the available electrical power response of each of the plurality of generators, determine a total available electrical power response, and determine a total maximum power demand. The controller then compares the total available electrical power response to the total maximum power demand, and upon the total maximum power demand exceeding the total available electrical power response, limits power to the plurality of on-line consumers to no more than the total available electrical power response.

A system for limiting power to a plurality of on-line consumers includes an operating characteristic sensor associated with each of a plurality of prime movers and a controller. The controller is configured to determine a maximum torque capability of each of the plurality of prime movers, determine the available electrical power response of each of the plurality of generators, determine a total available electrical power response, and determine a total maximum power demand. The controller then compares the total available electrical power response to the total maximum power demand, and upon the total maximum power demand exceeding the total available electrical power response, limits power to the plurality of on-line consumers to no more than the total available electrical power response.

A method for controlling a marine propulsion device having an engine rotatably engaged with a transmission via a clutch, and rotatably engaged with a charging device for charging a battery. The method includes measuring a voltage of the battery and comparing the voltage to a minimum threshold. The method further includes increasing a speed of the engine when the voltage is below the minimum threshold, and also increasing a slip of the clutch when the speed of the engine is increased in response to the voltage being below the minimum threshold.

A sea vessel (1), such as a tugboat or a fishing vessel, including a hydraulic winch (10) connected to a hydraulic system (100), and at least one main engine with a main engine crankshaft (22) connected to a propeller or a thruster. The hydraulic system (100) comprising: a first, hydraulically powered genset (106) including a hydraulic motor and a generator, at least one hydraulic pump (105) connected to said crankshaft (22). The hydraulic pump (105) is configured for driving said first genset (106) to generate electricity, and the hydraulic pump (105) is configured for driving said hydraulic winch (10), and first valve element (102) are used for selectively directing hydraulic fluid to the hydraulic winch (10) or to said first genset (106) of said hydraulic system.

This disclosure provides improved nautical craft that can travel and navigate on their own. A hybrid vessel is described that converts wave motion to locomotive thrust by mechanical means, and also converts wave motion to electrical power for storage in a battery. The electrical power can then be tapped to provide locomotive power during periods where wave motion is inadequate and during deployment. The electrical power can also be tapped to even out the undulating thrust that is created when locomotion of the vessel is powered by wave motion alone.

This disclosure provides improved nautical craft that can travel and navigate on their own. A hybrid vessel is described that converts wave motion to locomotive thrust by mechanical means, and also converts wave motion to electrical power for storage in a battery. The electrical power can then be tapped to provide locomotive power during periods where wave motion is inadequate and during deployment. The electrical power can also be tapped to even out the undulating thrust that is created when locomotion of the vessel is powered by wave motion alone.