A self-elevating platform comprises a deck structure, a plurality of legs, a plurality of footings, and a jacking system, wherein the plurality of legs pass through the deck structure and are supported by the plurality of footings; and wherein the jacking system comprises a jackcase structure with a first locking pin, a jacking yoke with a second locking pin, a plurality of jacking cylinders with a first end and second end, where the first end of the jacking cylinders is supported by the jackcase structure, and the second end of the jacking cylinders by the jacking yoke; and a fixation system comprising a plurality of tension rods, wherein each tension rod has a first end and a second end, and wherein the first end of the tension rods is securely coupled with the jacking yoke, and the second end of the tension rods is securely coupled with the deck structure; thereby when the plurality of tension rods secures the jacking yoke to the deck structure, the load can be removed from the hydraulic cylinders and transferred to the fixation system.

A self-elevating platform comprises a deck structure, a plurality of legs, a plurality of footings, and a jacking system, wherein the plurality of legs pass through the deck structure and are supported by the plurality of footings; and wherein the jacking system comprises a jackcase structure with a first locking pin, a jacking yoke with a second locking pin, a plurality of jacking cylinders with a first end and second end, where the first end of the jacking cylinders is supported by the jackcase structure, and the second end of the jacking cylinders by the jacking yoke; and a fixation system comprising a plurality of tension rods, wherein each tension rod has a first end and a second end, and wherein the first end of the tension rods is securely coupled with the jacking yoke, and the second end of the tension rods is securely coupled with the deck structure; thereby when the plurality of tension rods secures the jacking yoke to the deck structure, the load can be removed from the hydraulic cylinders and transferred to the fixation system.

A subsea system for installing, suspending and removing underwater equipment below the surface of the sea is provided. The subsea system includes a landing base module for landing and positioning underwater equipment thereupon, the landing base module comprising a base member and a first buoyancy system; and a second buoyancy system for affixing to the underwater equipment, the second buoyancy system having sufficient buoyancy to float the underwater equipment toward the surface of the sea when detached from the landing base module, wherein the underwater equipment includes a ballast system structured and arranged to permit the underwater equipment to be lowered onto the landing base module. A method for installing, suspending and removing underwater equipment below the surface of the sea and a kit of parts are also provided.

A subsea system for installing, suspending and removing underwater equipment below the surface of the sea is provided. The subsea system includes a landing base module for landing and positioning underwater equipment thereupon, the landing base module comprising a base member and a first buoyancy system; and a second buoyancy system for affixing to the underwater equipment, the second buoyancy system having sufficient buoyancy to float the underwater equipment toward the surface of the sea when detached from the landing base module, wherein the underwater equipment includes a ballast system structured and arranged to permit the underwater equipment to be lowered onto the landing base module. A method for installing, suspending and removing underwater equipment below the surface of the sea and a kit of parts are also provided.

A system for holding a pile and being mounted on a vessel includes a support assembly and a pile holder. The support assembly provides compensation for wave-induced motion of the vessel to maintain a predetermined X-Y location of the pile holder. The pile holder has a center axis and is mounted on the support assembly so as to be tiltable about a substantially horizontal tilt axis relative to the support assembly. The pile holder has at least one ring which includes a ring structure and multiple pile engaging devices connected to the ring structure of the ring, distributed about the circumference of the ring. The substantially horizontal tilt axis of the system is located, with the pile extending substantially vertically through the at least one ring, further forward from the location at which the support assembly is mounted to the vessel than the center axis of the pile holder.

There is disclosed a packer and/or gripper element (10), beneficially for use offshore and/or underwater, the packer and/or gripper (10) comprising an inflatable element or cushion (15a, 15b, 15c, 15d), wherein a periphery of the/each inflatable element or cushion (15a, 15b, 15c, 15d) comprises at least one corner, the at least one corner comprising a concave portion (30a, 30b, 30c, 30d). The disclosed packer and/or gripper element (10) comprises a plurality of inflatable elements (15a, 15b, 15c, 15d), each inflatable element (15a, 15b, 15c, 15d) being communicably coupled to an adjacent inflatable element (15a, 15b, 15c, 15d) by a port (155a, 155b) disposed between the inflatable elements (15a, 15b, 15c, 15d).

There is disclosed a packer and/or gripper element (10), beneficially for use offshore and/or underwater, the packer and/or gripper (10) comprising an inflatable element or cushion (15a, 15b, 15c, 15d), wherein a periphery of the/each inflatable element or cushion (15a, 15b, 15c, 15d) comprises at least one corner, the at least one corner comprising a concave portion (30a, 30b, 30c, 30d). The disclosed packer and/or gripper element (10) comprises a plurality of inflatable elements (15a, 15b, 15c, 15d), each inflatable element (15a, 15b, 15c, 15d) being communicably coupled to an adjacent inflatable element (15a, 15b, 15c, 15d) by a port (155a, 155b) disposed between the inflatable elements (15a, 15b, 15c, 15d).

In a clamp system for a slender object (16), such as a pile or pipe and the like, a clamp (1) and the object are to be applied around one another. The clamp has a frame (4) defining an axial direction. Furthermore, gripping devices (3) are provided which are spaced in circumferential direction of the frame (4). A stop (25) defines an end position of the gripping device (3), the gripping device (3) in gripping state and positioned in the end position prevents the object (16) from displacing with respect to the frame (4) in a first axial direction of the passage (9), in which first axial direction the gripping device (3) is held pressed against the stop (25), and the gripping device (3) allowing the object (16) to displace with respect to the frame in the second axial direction opposite the first axial direction.

In a clamp system for a slender object (16), such as a pile or pipe and the like, a clamp (1) and the object are to be applied around one another. The clamp has a frame (4) defining an axial direction. Furthermore, gripping devices (3) are provided which are spaced in circumferential direction of the frame (4). A stop (25) defines an end position of the gripping device (3), the gripping device (3) in gripping state and positioned in the end position prevents the object (16) from displacing with respect to the frame (4) in a first axial direction of the passage (9), in which first axial direction the gripping device (3) is held pressed against the stop (25), and the gripping device (3) allowing the object (16) to displace with respect to the frame in the second axial direction opposite the first axial direction.

A boat lift is attached to piles driven into the earth or to another object. The boat lift is held in horizontal position relative to piles or the object to which it is attached, but vertical movement of the boat lift relative to the object is permitted. The boat lift is connected to the piles by modular units or cube constructs that have a post extending there through. The post has a blade extending from it. The blades are attached at an angle, according to the application, to pile guides that engage piles. The pile guides vertically traverse the piles, permitting the boat lift to move vertically relative to the object, but fixing the horizontal position of the boat lift.