The present disclosure provides helical ground anchors or piles designed to cut through rock. The helical ground anchors have a shaft, one or more helical plates attached to the shaft and at least one cutting tip attached to the distal end of the shaft in order to make a first cut through rock along the axis of rotation of the shaft. The distal end of the shaft is tapered and the at least one cutting tip can be attached to the longer end of the shaft. The helical shaped plates are attached to the shaft at a distance above the at least one cutting tip.

A foundation (1) for a structure such as an off-shore wind turbine. The foundation (1) comprises a body (4) having a lateral surface (8,9) and a distal end (5) for insertion into a soil (2). At least a region of the lateral surface (8,9) forms a first electrode. A second electrode (7) is provided on the lateral surface (8,9) of the body (4) and is electrically insulated from the first electrode. The body (4) further comprises a spacing formation (6) for forming a gap (11) between the second electrode (7) and the soil (2) when the body (4) is inserted into the soil (2). In use, an electric potential may be established between the electrodes to induce electro-osmosis in the soil for allowing the foundation to be installed more easily. The polarity of the electric potential may also be reversed for stabilising the foundation.

A foundation (1) for a structure such as an off-shore wind turbine. The foundation (1) comprises a body (4) having a lateral surface (8,9) and a distal end (5) for insertion into a soil (2). At least a region of the lateral surface (8,9) forms a first electrode. A second electrode (7) is provided on the lateral surface (8,9) of the body (4) and is electrically insulated from the first electrode. The body (4) further comprises a spacing formation (6) for forming a gap (11) between the second electrode (7) and the soil (2) when the body (4) is inserted into the soil (2). In use, an electric potential may be established between the electrodes to induce electro-osmosis in the soil for allowing the foundation to be installed more easily. The polarity of the electric potential may also be reversed for stabilising the foundation.

The invention relates to a system (1) for use with a crane (4) on a surface vessel (3), comprising a crane tool (15) attached or attachable to a hoisting cable (5) of the crane (4) and one or more adaptors (16) attached or attachable to one or more tools (11-14, 25) for carrying out operations or to one or more components (2, 10), the crane tool (15) comprising a connector (17) and at least one of the adaptors (16) comprising a connector-counterpart (18).

The invention relates to a system (1) for use with a crane (4) on a surface vessel (3), comprising a crane tool (15) attached or attachable to a hoisting cable (5) of the crane (4) and one or more adaptors (16) attached or attachable to one or more tools (11-14, 25) for carrying out operations or to one or more components (2, 10), the crane tool (15) comprising a connector (17) and at least one of the adaptors (16) comprising a connector-counterpart (18).

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

The invention relates to a watercraft having a hull (10), an introduction installation (20) for an object (70) to be anchored in the water, said introduction installation (20) being disposed on said hull (10), and at least one compressor (30) having at least one compressed-air line (40) which leads into the water and is coupled to at least one compressed-air distribution installation (45) which has a horizontal extent and for generating a bubble curtain (50) below the hull (10) has a multiplicity of mutually spaced apart outflow openings (46), characterized in that the hull (10) has at least two sub-hulls (11, 12) which are disposed so as to be mutually spaced apart and connected to one another, and a void (15) which is at least partially surrounded by the bubble curtain (50) is situated between the sub-hulls (11, 12).

The invention relates to a handling device for gripping and inserting a pile tube into a borehole in the ground to form a foundation pile, comprising a base frame, a gripping device for gripping and holding the pile tube, and a holding element for releasably connecting the base frame to a hoist, in particular a suspension rope. According to the invention, it is provided that at least one inlet device for supplying a curable medium is arranged on the base frame in an upper region and at least one outlet device for the curable medium to the pile tube is arranged in a lower region.

A gripping assembly (1) designed to grasp cylindrical piles (CP) provided with a longitudinal axis (AL) in an end position: the assembly (1) comprising a first cylindrical body (10) provided with a central axis (CA) and delimited by a first upper flat face (2) and by a second lower flat face (3), parallel to each other and transversal to the central axis (CA) of the same first body (10) and a plurality of gripping members (12) evenly distributed around the central axis (CA) and radially movable to couple with one of the piles (CP) by friction: a lifting arm (20) comprising at least one support portion (22) arranged laterally with respect to a longitudinal diametral plane (M) carried by the first body (10) hinged to a plate (100)(100) integral with the first body (10) around a first axis (TAI) transversal to the diametral plane: the first axis (TAI) being arranged on the outside of the first body (10) on the side opposite to said second face (3) with respect to the first face (2).

A gripping assembly (1) designed to grasp cylindrical piles (CP) provided with a longitudinal axis (AL) in an end position: the assembly (1) comprising a first cylindrical body (10) provided with a central axis (CA) and delimited by a first upper flat face (2) and by a second lower flat face (3), parallel to each other and transversal to the central axis (CA) of the same first body (10) and a plurality of gripping members (12) evenly distributed around the central axis (CA) and radially movable to couple with one of the piles (CP) by friction: a lifting arm (20) comprising at least one support portion (22) arranged laterally with respect to a longitudinal diametral plane (M) carried by the first body (10) hinged to a plate (100)(100) integral with the first body (10) around a first axis (TAI) transversal to the diametral plane: the first axis (TAI) being arranged on the outside of the first body (10) on the side opposite to said second face (3) with respect to the first face (2).