An instrumentation system for a net barrier comprising at least one tension sensor node attached to one or more threads of said net barrier is described. Also described is a sensor node, and use of this sensor node.

A deep water drawing step of drawing deep water that exists in a deep region of the sea to a surface region of the sea with an upwelling pipe (1); and a phytoplankton culturing step of culturing the phytoplankton in the upwelling pipe (1) are included to produce, as a basic producer of a food chain, a living marine resource, such as fishes and shellfishes, with phytoplankton produced in the phytoplankton culturing step.

An apparatus for cleaning nets underwater formed from a propeller housing with a centrally disposed axis with a plurality of blades extending therefrom. An outer perimeter ring secured to an outer tip of each blade with a plurality of knuckles secured to the outer perimeter ring. Each knuckle including a curved surface constructed and arranged to be forcefully presented to the aquaculture net upon rotation of said blades for removal of growth by impact and shaking of the aquaculture net. An elastomeric hub prevents spike loads.

An apparatus for cleaning nets underwater formed from a propeller housing with a centrally disposed axis with a plurality of blades extending therefrom. An outer perimeter ring secured to an outer tip of each blade with a plurality of knuckles secured to the outer perimeter ring. Each knuckle including a curved surface constructed and arranged to be forcefully presented to the aquaculture net upon rotation of said blades for removal of growth by impact and shaking of the aquaculture net. An elastomeric hub prevents spike loads.

Netting suitable for use in aquaculture which has a half mesh size of 5-100 mm measured in accordance to ISO 1107:2017 and includes cord having a diameter of 0.5-8 mm, wherein the cord includes films of ultra-high molecular weight polyethylene, the films having a width of 0.5-10 mm. It has been found that the use of cord based on films of ultra-high molecular weight PE (UHMWPE) results in nets with improved fouling resistance compared to nets based on conventional ultra-high molecular weight gel-spun monofilament or multifilament yarn. The netting is easier to clean than netting based on conventional ultra-high molecular weight gel-spun monofilament or multifilament yarn. Not only is less frequent cleaning required due to less fouling, the cleaning steps themselves can be carried out at lower water pressure in the high-pressure cleaning apparatus. This results in less damage of the nets during cleaning and lower water consumption.

Netting suitable for use in aquaculture which has a half mesh size of 5-100 mm measured in accordance to ISO 1107:2017 and includes cord having a diameter of 0.5-8 mm, wherein the cord includes films of ultra-high molecular weight polyethylene, the films having a width of 0.5-10 mm. It has been found that the use of cord based on films of ultra-high molecular weight PE (UHMWPE) results in nets with improved fouling resistance compared to nets based on conventional ultra-high molecular weight gel-spun monofilament or multifilament yarn. The netting is easier to clean than netting based on conventional ultra-high molecular weight gel-spun monofilament or multifilament yarn. Not only is less frequent cleaning required due to less fouling, the cleaning steps themselves can be carried out at lower water pressure in the high-pressure cleaning apparatus. This results in less damage of the nets during cleaning and lower water consumption.

An offshore ocean floating platform equipped with a docking bay with a hull made with multiple steel barrels welded to each other arranged in multiple layers, an upper deck with living premises, laboratory and control tower, having three submersible plankton pumping towers extending from above water level up to 120′ depth, a manned and aerated research submersible vehicle with vertical travel controlled by a telescopic double acting actuator, including two telescopic aeration tubes providing atmospheric pressure air from above sea level, and safety return springs, sealed glass windows, water depth gage and video cameras. The upper deck having plankton pools plankton pumped from ocean floor by a piston traveling within a cylinder by double acting telescopic actuator for fishery feedings. All towers bottom-end secured to seabed dirt with multiple heavy cement poles with embedded cylinder and piston moving under ocean water high pressure into seabed dirt with self-drilling plungers.

This disclosure provides a nested raceway system configured to be used with two or more nested vessels. More specifically, a nested raceway system includes a first vessel and a second vessel. In an embodiment, there may be more than two vessels. In another embodiment, the first vessel has a base with a head-end bulkhead, a tail-end bulkhead. The second vessel has a second base with a plurality of apertures thereon, a second head-end bulkhead, and a second tail-end bulkhead. The second vessel is nested (i.e., suspended) within the first vessel and creates at least two habitats within the first vessel. The plurality of apertures allows for small marine life, algae, or other valuable minerals to sink to the bottom to be removed or grown. In an embodiment, the first and second vessels are constructed of a floatable, durable, and flexible material.

This disclosure provides a nested raceway system configured to be used with two or more nested vessels. More specifically, a nested raceway system includes a first vessel and a second vessel. In an embodiment, there may be more than two vessels. In another embodiment, the first vessel has a base with a head-end bulkhead, a tail-end bulkhead. The second vessel has a second base with a plurality of apertures thereon, a second head-end bulkhead, and a second tail-end bulkhead. The second vessel is nested (i.e., suspended) within the first vessel and creates at least two habitats within the first vessel. The plurality of apertures allows for small marine life, algae, or other valuable minerals to sink to the bottom to be removed or grown. In an embodiment, the first and second vessels are constructed of a floatable, durable, and flexible material.

An aquaculture system can include an aquafarm with one or more aquatic pods of aquatic organisms and a remote device to manage the aquafarm. An aquatic pod may be associated with an aquatic structure with a buoyancy system and a control device to automatically perform daily farming functions. The aquatic structure may include an enclosure to hold the aquatic organisms. The control device may be configured to use a smart buoyancy assistant to control the buoyancy system and to determine the farming task to perform in response to environmental stimuli. The remote device can receive data representing crop metrics, harvest results, and sensor data. The remote device can aggregate data from multiple aquatic pods and correlate the data to generate aquaculture models to improve the harvest results. The remote device can generate overview and maintenance reports for the aquafarm.