A water ski ramp that can be selectively adjusted to provide a variety of launch heights for a jumper is provided. The water ski ramp includes a floating dock comprising a first dock portion and a second dock portion operatively connected to the first dock portion, in which the first dock portion and the second dock portion define an obtuse angle ‘α’ therebetween. The water ski ramp also includes a jumping platform operatively connected to the second dock portion via a dock-to-surface hinge. The water ski ramp may also include an adjustable lift including a first end operatively connected to the first dock portion and a second end operatively connected to the jumping platform, in which the adjustable lift and the first dock portion define an acute angle ‘β’ therebetween.

A grounding skeg for a landing craft configured for stem landing onto, and setting off from, a ground surface, the grounding skeg including: an elongate grounding body having a fore end and an aft end; and a removable pulling propeller functionally connected to the fore end of the body; wherein the pulling propeller is able to drive the landing craft ahead and astern; and the grounding body is locatable on the landing craft such that: the grounding body provides contact with the ground surface during stem landing of the landing craft; the fore end of the grounding body faces a bow end of the landing craft; and the aft end of the grounding body faces a stem end of the landing craft.

A grounding skeg for a landing craft configured for stem landing onto, and setting off from, a ground surface, the grounding skeg including: an elongate grounding body having a fore end and an aft end; and a removable pulling propeller functionally connected to the fore end of the body; wherein the pulling propeller is able to drive the landing craft ahead and astern; and the grounding body is locatable on the landing craft such that: the grounding body provides contact with the ground surface during stem landing of the landing craft; the fore end of the grounding body faces a bow end of the landing craft; and the aft end of the grounding body faces a stem end of the landing craft.

A workboat includes at least two hulls, at least one work tool, a body, and at least one carrier frame which is fastened on the body, between a bow and a stern of the workboat. The at least one work tool is arranged on the at least one carrier frame. A range of movement of at least one of the at least one carrier frame and the at least one work tool, in a transverse direction of the workboat, is located centrally with respect to the workboat and between the at least two hulls which extend in a longitudinal direction. In an event of a position change during a work procedure of the at least one work tool, a position of a center of gravity of the workboat varies by at most 15% with respect to a boat length of the workboat.

A workboat includes at least two hulls, at least one work tool, a body, and at least one carrier frame which is fastened on the body, between a bow and a stern of the workboat. The at least one work tool is arranged on the at least one carrier frame. A range of movement of at least one of the at least one carrier frame and the at least one work tool, in a transverse direction of the workboat, is located centrally with respect to the workboat and between the at least two hulls which extend in a longitudinal direction. In an event of a position change during a work procedure of the at least one work tool, a position of a center of gravity of the workboat varies by at most 15% with respect to a boat length of the workboat.

An aquaculture system which has a pen, a control system, a water pumping mechanism coupled to the pen, and a set of buoyancy tanks coupled to the pen. The pen can be disposed in a body of water and at least temporarily stores aquatic animals during development. The control system receives electric power from a power source and provides electric power to the water pumping mechanism to provides a flow of water through the pen. A portion of the control system is in fluid communication with the set of buoyancy tanks and adjusts a volume of fluid in at least one buoyancy tank to move the pen from a first position in which the pen is partially submerged in the body of water to a second position in which the pen is fully submerged in the body of water.

An aquaculture system which has a pen, a control system, a water pumping mechanism coupled to the pen, and a set of buoyancy tanks coupled to the pen. The pen can be disposed in a body of water and at least temporarily stores aquatic animals during development. The control system receives electric power from a power source and provides electric power to the water pumping mechanism to provides a flow of water through the pen. A portion of the control system is in fluid communication with the set of buoyancy tanks and adjusts a volume of fluid in at least one buoyancy tank to move the pen from a first position in which the pen is partially submerged in the body of water to a second position in which the pen is fully submerged in the body of water.

The technology relates to an apparatus, methods and applications which take readings and samples in contaminated bodies of water at desired locations and depths. The apparatus is a remote control boat or similar apparatus that can travel on the surface, partially submersed or fully submersed. Onboard remote control instruments read pH, temperature, conductivity, salinity, turbidity, total dissolved solids, dissolved oxygen, oxidation-reduction, ammonia, nitrate, phosphate as well as algae and chlorophyll levels. It can also perform sludge blanket mapping and take water or sludge samples at different depths of the water column or at the bottom of the body of water. The data obtained permits to evaluate the health of a contaminated body of water to develop appropriate bioremediation procedures and monitor progress. The apparatus can also deliver the necessary bioremediation products. The danger for humans to navigate on contaminated waters is avoided with the remote control apparatus.

The technology relates to an apparatus, methods and applications which take readings and samples in contaminated bodies of water at desired locations and depths. The apparatus is a remote control boat or similar apparatus that can travel on the surface, partially submersed or fully submersed. Onboard remote control instruments read pH, temperature, conductivity, salinity, turbidity, total dissolved solids, dissolved oxygen, oxidation-reduction, ammonia, nitrate, phosphate as well as algae and chlorophyll levels. It can also perform sludge blanket mapping and take water or sludge samples at different depths of the water column or at the bottom of the body of water. The data obtained permits to evaluate the health of a contaminated body of water to develop appropriate bioremediation procedures and monitor progress. The apparatus can also deliver the necessary bioremediation products. The danger for humans to navigate on contaminated waters is avoided with the remote control apparatus.

An apparatus includes a first member having a housing that encloses a power source and a controller, a second member coupled to the first member that is seeded with a target product, and a sensing module coupled to the first member to allow power from the power source to be transmitted to the sensing module and sensor data from the sensing module to be transmitted to the controller. The sensing module including a sensor oriented toward at least a portion of the second member. The sensor configured to obtain sensor data associated with at least one characteristic of the target product.