A towing apparatus has a spine with multiple generally parallel spine members extending in a longitudinal direction and having a length of at least 100 m, and with a leading end and a trailing end. A series of blades are mounted to the spine by couplers which allow the blade to rotate about an axis substantially transverse to the longitudinal direction, each blade having a first surface facing generally in the trailing end direction and a second surface facing generally in the leading end direction. Restraints prevent rotation of each blade by more than a pre-set amount towards the leading end, so that impingement of a wave on the first surface applies a force to the apparatus in the leading end direction. A pair of the towing apparatus' may be arranged to connect to a floating collector with a beach shape to collect floating debris on the sea surface, ridges helping to retain the debris on the slope until it is washed up into a channel.

A towing apparatus has a spine with multiple generally parallel spine members extending in a longitudinal direction and having a length of at least 100 m, and with a leading end and a trailing end. A series of blades are mounted to the spine by couplers which allow the blade to rotate about an axis substantially transverse to the longitudinal direction, each blade having a first surface facing generally in the trailing end direction and a second surface facing generally in the leading end direction. Restraints prevent rotation of each blade by more than a pre-set amount towards the leading end, so that impingement of a wave on the first surface applies a force to the apparatus in the leading end direction. A pair of the towing apparatus' may be arranged to connect to a floating collector with a beach shape to collect floating debris on the sea surface, ridges helping to retain the debris on the slope until it is washed up into a channel.

A marine vessel can be propelled by using wind or solar energy. This propulsion results in the forward movement and six degrees of motion (roll, heave, pitch, yaw, surge, and sway) of the marine vessel. This invention capitalizes on the fact that solar, wind and wave energy are cyclical by nature. The invention enables the vessel to manage stored and harvested energy and use the stored energy during periods when the external natural sources of energy are not available in adequate quantities to maintain a reasonable speed of advance for the vessel. The vessel's natural energy management system (NEMS) manages it in such a way that harvesting of the energy during high energy cycles, storing it and using it when needed during low external energy cycles, allows a marine vessel to maintain faster average speed without reliance on any fossil or chemical fuel and by only using renewable energy sources.

A marine vessel can be propelled by using wind or solar energy. This propulsion results in the forward movement and six degrees of motion (roll, heave, pitch, yaw, surge, and sway) of the marine vessel. This invention capitalizes on the fact that solar, wind and wave energy are cyclical by nature. The present invention enables the vessel to manage stored and harvested energy from these energy sources and use the stored energy during periods when the external natural sources of energy are not available in adequate quantities to maintain a reasonable speed of advance for the marine vessel. The vessel's natural energy management system (NEMS) manages it in such a way that harvesting of the energy during high energy cycles, storing it and using it when needed during low external energy cycles, allows a marine vessel to maintain faster average speed without reliance on any fossil or chemical fuel and by only using renewable energy sources.

A submersible device is provided herein. The submersible device may include a submersible hull, control fins, propeller fins, and a turbine device. The submersible hull may include a proximal end, an opposing distal end, a first sidewall and a second sidewall opposite the first sidewall. The sidewalls may be in between the proximal and distal ends of the hull. The control fins may extend from the submersible hull. At least one control fin extends from the first sidewall and at least one other control fin extends from the second sidewall. The propeller fins may extend from the submersible hull at the distal end. Each of the propeller fins may be connected to a rotor. The turbine device may be communicatively coupled to the rotor.

A device for linear propulsion (1) comprises a support structure (2) for carrying a payload, and one or more wave propulsion modules (3). The or each wave propulsion module (3) comprises a first individually-pivoted substantially planar blade (4) and a second individually-pivoted substantially planar blade (5). The first individually-pivoted substantially planar blade (4) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the horizontal plane (6). The second individually-pivoted substantially planar blade (5) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the vertical plane (7).

A device for linear propulsion (1) comprises a support structure (2) for carrying a payload, and one or more wave propulsion modules (3). The or each wave propulsion module (3) comprises a first individually-pivoted substantially planar blade (4) and a second individually-pivoted substantially planar blade (5). The first individually-pivoted substantially planar blade (4) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the horizontal plane (6). The second individually-pivoted substantially planar blade (5) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the vertical plane (7).

A marine vessel can be propelled by using wind or solar energy. This propulsion results in the forward movement and six degrees of motion (roll, heave, pitch, yaw, surge, and sway) of the marine vessel. This invention capitalizes on the fact that solar, wind and wave energy are cyclical by nature. The present invention enables the vessel to manage stored and harvested energy from these energy sources and use the stored energy during periods when the external natural sources of energy are not available in adequate quantities to maintain a reasonable speed of advance for the marine vessel. The vessel's natural energy management system (NEMS) manages it in such a way that harvesting of the energy during high energy cycles, storing it and using it when needed during low external energy cycles, allows a marine vessel to maintain faster average speed without reliance on any fossil or chemical fuel and by only using renewable energy sources.

A wave-powered water vehicle includes a surface float, a submerged swimmer, and a tether which connects the float and the swimmer, so that the swimmer moves up and down as a result of wave motion. The swimmer includes one or more fins which interact with the water as the swimmer moves up and down, and generate forces which propel the vehicle forward. The vehicle, which need not be manned, can carry communication and control equipment so that it can follow a course directed by signals sent to it, and so that it can record or transmit data from sensors on the vehicle.

A device for linear propulsion (1) comprises a support structure (2) for carrying a payload, and one or more wave propulsion modules (3). The or each wave propulsion module (3) comprises a first individually-pivoted substantially planar blade (4) and a second individually-pivoted substantially planar blade (5). The first individually-pivoted substantially planar blade (4) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the horizontal plane (6). The second individually-pivoted substantially planar blade (5) is capable of producing a reactive force by self-attenuating by spring or dynamics of buoyancy means in response to an incoming fluid flow in the vertical plane (7).