Abstract: A device for using technical equipment underwater includes at least one guide rail configured to extend vertically underwater on an edifice from above a waterline. At least one device carriage is provided and includes a basic unit having a reception flange configured to couple the technical equipment thereto, and at least one running unit that abuts against the guide rail via guide rollers. A press-on unit is disposed on a first side of the device carriage and includes a lever pivotable on an axis of the device carriage so as to generate a pressing force of the device carriage against the guide rail. The lever includes a support roller at a first end and a weight packet at a second end so as to exert a downward drifting force underwater that is greater than a buoyancy of the device carriage. At least two spacers are each disposed at a first end on the at least one device carriage and abutting the edifice at a second end.

Abstract: A device for habitat development of marine fauna in an underwater region of an offshore structure having foundations laid in a bed of a body of water includes climbing aids disposed on the offshore structure in the underwater region and at the bed of the body of water. The climbing aids include guide profiles configured to allow vagile hard floor animals to climb the offshore structure that are disposed on the offshore structure, in sections or continuously, in at least one of a vertical, horizontal and diagonal direction.

Abstract: A device for colonizing and harvesting marine hardground animals in an underwater region of a ground-based offshore edifice includes at least one rail device configured to extend vertically on the offshore edifice along a height of the underwater region to above a waterline. The device also includes a netting array including a habitat carriage having a habitat and trapping basket that is adapted to contain the hardground animals. A lifting device is configured to move the netting array along the at least one rail device. Additionally, the device includes a scavenging carriage including a basic unit and a running unit that is configured to detachably couple the scavenging carriage with the at least one rail device so as to be movable thereon. The scavenging carriage is configured to detachably couple with the habitat carriage and the lifting device.

Abstract: An electrochemical antifouling system for preventing fouling organisms from adhering to seawater-wetted structures includes a direct current circuit for creating an electrolytic environment in seawater, the direct current circuit having an adjustable direct current source, a lattice electrode having a single metallic component so as to provide a dimensionally stable lattice structure, the lattice electrode electrically insulated from a surface of a seawater-wetted structure, at least one corrosion-resistant counter electrode having polarity opposite to the lattice electrode and disposed at a distance therefrom, and a switching device configured to alternatively switch the lattice electrode to (a) a continuous operating mode, and (b) a temporary depletion mode, wherein the lattice electrode is disposed in a distance range from the surface of the seawater-wetted structure so that the surface lies within an area of influence of an increase in pH value of the seawater caused by electrolysis.

Abstract: A transportable device for colonizing and harvesting invertebrate animals in proximity to a floor of a body of water includes at least two quadrangular frames, each of which include a trapping surface. A central hinge is disposed between opposing, inner traverse sides of the at least two quadrangular frames and has a first one-way folding direction. Two secondary hinges are disposed on opposite sides of the central hinge, each of the secondary hinges having a second one-way folding direction that is opposite to the first one-way folding direction such that the at least two quadrangular frames have an opening angle with respect to each other that is adaptable to a structure of the floor of the body of water.

Abstract: A transportable device for colonizing and harvesting invertebrate animals in proximity to a floor of a body of water includes at least two quadrangular frames, each of which include a trapping surface. A central hinge is disposed between opposing, inner traverse sides of the at least two quadrangular frames and has a first one-way folding direction. Two secondary hinges are disposed on opposite sides of the central hinge, each of the secondary hinges having a second one-way folding direction that is opposite to the first one-way folding direction such that the at least two quadrangular frames have an opening angle with respect to each other that is adaptable to a structure the floor of the body of water.

Abstract: A device for using technical equipment underwater includes at least one guide rail configured to extend vertically underwater on an edifice from above a waterline. At least one device carriage is provided and includes a basic unit having a reception flange configured to couple the technical equipment thereto, and at least one running unit that abuts against the guide rail via guide rollers. A press-on unit is disposed on a first side of the device carriage and includes a lever pivotable on an axis of the device carriage so as to generate a pressing force of the device carriage against the guide rail. The lever includes a support roller at a first end and a weight packet at a second end so as to exert a downward drifting force underwater that is greater than a buoyancy of the device carriage. At least two spacers are each disposed at a first end on the at least one device carriage and abutting the edifice at a second end.

Abstract: A device for colonizing and harvesting marine hardground animals in an underwater region of a ground-based offshore edifice includes at least one rail device configured to extend vertically on the offshore edifice along a height of the underwater region to above a waterline. The device also includes a netting array including a habitat carriage having a habitat and trapping basket that is adapted to contain the hardground animals. A lifting device is configured to move the netting array along the at least one rail device. Additionally, the device includes a scavenging carriage including a basic unit and a running unit that is configured to detachably couple the scavenging carriage with the at least one rail device so as to be movable thereon. The scavenging carriage is configured to detachably couple with the habitat carriage and the lifting device.

Abstract: An electrochemical antifouling system for preventing fouling organisms from adhering to seawater-wetted structures includes a direct current circuit for creating an electrolytic environment in seawater, the direct current circuit having an adjustable direct current source, a lattice electrode having a single metallic component so as to provide a dimensionally stable lattice structure, the lattice electrode electrically insulated from a surface of a seawater-wetted structure, at least one corrosion-resistant counter electrode having polarity opposite to the lattice electrode and disposed at a distance therefrom, and a switching device configured to alternatively switch the lattice electrode to (a) a continuous operating mode, and (b) a temporary depletion mode, wherein the lattice electrode is disposed in a distance range from the surface of the seawater-wetted structure so that the surface lies within an area of influence of an increase in pH value of the seawater caused by electrolysis.