A device having a funnel structure (connected to a separating arrangement by a base pipe is disclosed. The base pipe is horizontal and arranged between the funnel structure and the base pipe. The base pipe is also a vertical suction pipe. The device includes a pressure pipe which is parallel to the base pipe. The funnel structure is slightly below the water surface. In operation, water and floating waste pass over the edges of the funnel structure and swirl into the suction pipe. A jet of water may be injected through the pressure pipe to the base pipe. A flow gradient may then be formed in the base pipe and the differently sized waste objects may separate. If the water contains liquid waste, the speed of the water jet may be adjusted in such a way that the liquid waste and water do not form an emulsion.

A device having a funnel structure (connected to a separating arrangement by a base pipe is disclosed. The base pipe is horizontal and arranged between the funnel structure and the base pipe. The base pipe is also a vertical suction pipe. The device includes a pressure pipe which is parallel to the base pipe. The funnel structure is slightly below the water surface. In operation, water and floating waste pass over the edges of the funnel structure and swirl into the suction pipe. A jet of water may be injected through the pressure pipe to the base pipe. A flow gradient may then be formed in the base pipe and the differently sized waste objects may separate. If the water contains liquid waste, the speed of the water jet may be adjusted in such a way that the liquid waste and water do not form an emulsion.

A system for removing contaminants from a body of water, may include a vessel, having contaminant cleanup and recovery equipment that may have at least one intake port capable of removing floating contaminants from the body of water to be transported to the recovery vessel. The system may further include a first towboat and a second towboat. The system may also include a first containment boom capable of being connected to the first tow boat and to a starboard side of a vessel. The system may also include a second containment boom capable of being connected to the second tow boat and a port side of the vessel, such that during operation the first and second towboats extend out from the vessel such that the first and second containment booms gather the floating contaminants from the body of water and channel them to the at least one intake port.

A system for removing contaminants from a body of water, may include a vessel, having contaminant cleanup and recovery equipment that may have at least one intake port capable of removing floating contaminants from the body of water to be transported to the recovery vessel. The system may further include a first towboat and a second towboat. The system may also include a first containment boom capable of being connected to the first tow boat and to a starboard side of a vessel. The system may also include a second containment boom capable of being connected to the second tow boat and a port side of the vessel, such that during operation the first and second towboats extend out from the vessel such that the first and second containment booms gather the floating contaminants from the body of water and channel them to the at least one intake port.

A marine debris collection device includes a first debris collector to remove non-minute debris contained in debris floating on water by allowing the debris to flow thereinto together with the water, and a second debris collector to remove minute debris by adsorbing the minute debris onto a microbubble generated when the water flows into the second debris collector from the first debris collector via a connection pipe.

A marine debris collection device includes a first debris collector to remove non-minute debris contained in debris floating on water by allowing the debris to flow thereinto together with the water, and a second debris collector to remove minute debris by adsorbing the minute debris onto a microbubble generated when the water flows into the second debris collector from the first debris collector via a connection pipe.

A module for retrofitting a boat for collection of floating biomass has a telescoping beam that spans the width of the boat and connects to aft-ends of levers that rest on the gunwales. The telescoping beam extends beyond both gunwales such that outboard net holders can be disposed thereon. Nets are attached to and held open by the net holders. The nets are at least partially submerged and fill with sargassum as the boat moves forward. Longitudinal drag forces are resisted by chains that connect the levers to the bow. Torsion around the telescoping beam is resisted by pretensioned straps that pass under the boat and over the aft-ends of the levers, which extend towards the bow to minimize strap tension and reaction force against gunwales. Horizontal moments in the outboard portions of the telescoping beam are absorbed by the inboard portion of the telescoping beam.

A module for retrofitting a boat for collection of floating biomass has a telescoping beam that spans the width of the boat and connects to aft-ends of levers that rest on the gunwales. The telescoping beam extends beyond both gunwales such that outboard net holders can be disposed thereon. Nets are attached to and held open by the net holders. The nets are at least partially submerged and fill with sargassum as the boat moves forward. Longitudinal drag forces are resisted by chains that connect the levers to the bow. Torsion around the telescoping beam is resisted by pretensioned straps that pass under the boat and over the aft-ends of the levers, which extend towards the bow to minimize strap tension and reaction force against gunwales. Horizontal moments in the outboard portions of the telescoping beam are absorbed by the inboard portion of the telescoping beam.

A foreign matter collecting device provided at a ship propulsion device that is configured to apply a propulsive force to a ship, the foreign matter collecting device includes an anti-ventilation plate extending in a horizontal direction and a collecting part provided in the anti-ventilation plate. A flow path extending from a water intake port to a water discharge port is provided in the anti-ventilation plate. A filter configured to collect fine-grained foreign matters from a water flow in the flow path is provided in the collecting part.

A foreign matter collecting device provided at a ship propulsion device that is configured to apply a propulsive force to a ship, the foreign matter collecting device includes an anti-ventilation plate extending in a horizontal direction and a collecting part provided in the anti-ventilation plate. A flow path extending from a water intake port to a water discharge port is provided in the anti-ventilation plate. A filter configured to collect fine-grained foreign matters from a water flow in the flow path is provided in the collecting part.