An autonomous sailing vessel may include a hull, a mast, a sail, and a rudder. The mast may be mechanically coupled to the hull. The sail may be mechanically coupled to the mast. The rudder may be mechanically coupled to the hull. A heading of the autonomous sailing vessel may be regulated by actively controlling the rudder without actively controlling the sail. Alternatively or additionally, the autonomous sailing vessel may include an anticapsize stabilizer tank, a lidar system, and/or marine mammal monitoring and identification.

A hydropower generator and a fluid-driven propulsion drive are provided. The hydropower generator includes a frame, a roller attached to the frame, a generator operatively connected to the roller, such that rotation of the roller powers the generator, and an endless belt extending from and operatively engaged with the roller. The endless belt has a proximal end engaged with the roller for rotation thereof, and a plurality of pockets extending from a main surface of the endless belt for receiving a flow of fluid thereby moving the endless belt relative to the frame and driving rotation of the roller, and where each of the plurality of pockets includes an opening facing towards the roller about one of the major sides of the endless belt.

A supervisory propulsion controller module, a speed and position sensing system, and a communication system that are incorporated on marine vessels to reduce the wave-making resistance of the multiple vessels by operating them in controlled and coordinated spatial patterns to destructively cancel their Kelvin wake transverse or divergent wave system through active control of the vessels separation distance with speed. This will enable improvement in the vessel's mobility (speed, payload and range), improve survivability and reliability and reduce acquisition and total ownership cost.

Described herein is an unmanned water vehicle comprising two or more hulls, a retractable sensor apparatus, a wireless communications device, a steerable drive apparatus, a mobility and control module providing operation of the unmanned water vehicle, and a power system comprising: one or more solar panels and an energy storage device, wherein the unmanned water vehicle is capable of continuous operation for a period of at least 3 months.

A marine vessel advisory system may be configured to calculate and provide operational information that show fuel consumption savings based on adjustment of vessel speed and/or heading. In an embodiment, the advisory system may operate real-time to collect operational and/or environmental conditions information to be used to calculate alternative operational performance of the marine vessel that will save fuel and reduce emissions. The calculations may include a simulation, machine learning, and/or artificial intelligence to determine a speed and/or heading of the marine vessel that will reduce fuel consumption. The advisory system may display the computed information for the operator, and the operator may elect to switch to the alternative operating parameters (e.g., slower speed). In an embodiment, the advisory system may interact directly with a marine vessel system and automatically cause the marine vessel system to adjust operating parameters based on computed operating parameters that saves fuel and reduces emissions.

A system includes a first jacket that contains seawater and a first tank storing a first fluid under pressure. A second jacket contains seawater and a second tank storing a second fluid under pressure. An actuator cylinder defines a space that receives the fluids from the first and second tanks. The actuator cylinder includes an actuator piston that divides the space into a first volume for the first fluid and a second volume for the second fluid. A hydraulic cylinder includes a hydraulic piston configured to move and change an amount of hydraulic fluid in the hydraulic cylinder, wherein the hydraulic piston is fixedly coupled to the actuator piston. A buoyancy plug changes a position in connection with the amount of the hydraulic fluid in the hydraulic cylinder, wherein the position of the buoyancy plug affects a buoyancy of a vehicle.

A wind generator for sailboats including a mast (A) provided with crosstrees (C), including: at least one wind generator (1) provided with a distribution of blades (2) arranged to rotate integrally with a shaft (6) of axis (a) in response to receiving a wind flow in an active direction (v) incident to the blades distribution; an electric generator (3) operatively connected to the generator (1) for converting the rotation of the blades (2) into electricity, comprising structure (22, 41) for fixing the generator (1) to a crosstree (C), and with the blades (2) being movable from an open operating position (P1) of maximum incidence of wind flow (F) to a closed non-operating position (P2) of minimum obstruction.

A control device for a propelling system of a vessel that can support a safe sailing of the vessel while reducing the load, of a steersman by executing automatic sailing control on the vessel when the vessel enters or approaches a specific water area where the sailing is limited. When determining that a hull stays within the specific water area in a state where a revolution speed and a rotational direction of a propeller and a posture of an outboard engine are controlled based on a signal inputted from a controlling device, an ECU of the outboard engine switches the sailing of the hull to an automatic sailing where the revolution speed and rotational direction of the propeller and the posture of the outboard engine are controlled without the intervention of the controlling device.

A Data Transmitting Marine Vessel System (DRTMEVS) that deploys and provisions the operation of both an aerial visual and data collection drone and an underwater camera and data collection system ROV to gather data at, above, and below the surface of the water simultaneously or individually, or in multiples. The vessel having geodetic and GPS guidance systems that determine the course and actions of the crafts either in a pre-programmed autonomous mode or from a remote operator. The control of the three separate remotely controlled data collection systems and craft are consolidated in the form of a vessel of (DRTMEVS) and monitored via a multitude of possible signals anywhere in the world from a control center.

The present disclosure relates to a stand-alone buoy with a seawater battery, which includes a main body formed to have a predetermined buoyancy so as to float on seawater and provided with a seawater space therein and an inlet formed to introduce the seawater into the seawater space, a position notification part installed on the main body and configured to notify a user of a position of the main body, a solar cell part installed on the main body and configured to generate electricity using sunlight, and a seawater battery unit installed in the seawater space to be submerged in the seawater introduced into the seawater space and configured to react with the seawater to store the electricity provided from the solar cell part and to provide the stored electricity to the position notification part so as to operate the position notification part.