A subsea line clamp assembly (1) has a body (10) having an axis and a clamp member (50), assembled in segments around a subsea line (3), and tethered to a subsea anchor (5). The clamp member (50) is movably located within the body (10). The inner surface of the body (10) and the outer surface of the clamp member (50) have respective tapered portions as part of teeth (32, 72) arranged to inter-engage. Adjacent teeth (32, 72) may be separated by axis-parallel portions. The clamping force on the subsea line (30) can be maintained at a consistent clamping force throughout the service life of the subsea line (3), despite the actions of creep and compression acting to reduce the outer diameter of the line (3).

A subsea line clamp assembly (1) has a body (10) having an axis and a clamp member (50), assembled in segments around a subsea line (3), and tethered to a subsea anchor (5). The clamp member (50) is movably located within the body (10). The inner surface of the body (10) and the outer surface of the clamp member (50) have respective tapered portions as part of teeth (32, 72) arranged to inter-engage. Adjacent teeth (32, 72) may be separated by axis-parallel portions. The clamping force on the subsea line (30) can be maintained at a consistent clamping force throughout the service life of the subsea line (3), despite the actions of creep and compression acting to reduce the outer diameter of the line (3).

A remote operated underwater vehicle, ROV, is provided, where the ROV includes at least one extendible pair of tubulars supported on the ROV, the one tubular of the pair being movable longitudinally relative to the other tubular of the pair, for extending a combined reach of the tubulars; and at least one pump connected to the tubulars, the pump being operable for pumping or suctioning fluid through the pair.

A suction anchor system comprises a substantially tubular suction anchor embeddable in a seabed, a predetermined set of sliding rails, an excavator, and a predetermined set of non-triangular wings disposed about the outer surface of the tubular, and a deployment interface which comprises a deployment cage, a suction anchor lid, and a predetermined set of deployment cage skidding rails disposed about an outer portion of the deployment cage. Using a surface vessel comprising a dispatcher which comprises a storage magazine configured to selectively receive and discharge the suction anchor, a skidding system, and an overhead anchor handler, the suction anchor can be operatively connected and secured to, and placed into fluid communication with, the deployment interface. The deployment interface along its connected suction anchor is lowed from the surface vessel into sea water using the dispatcher until the suction anchor contacts the seabed and allowed to self-penetrate below the seabed due to its own weight.

A suction anchor system comprises a substantially tubular suction anchor embeddable in a seabed, a predetermined set of sliding rails, an excavator, and a predetermined set of non-triangular wings disposed about the outer surface of the tubular, and a deployment interface which comprises a deployment cage, a suction anchor lid, and a predetermined set of deployment cage skidding rails disposed about an outer portion of the deployment cage. Using a surface vessel comprising a dispatcher which comprises a storage magazine configured to selectively receive and discharge the suction anchor, a skidding system, and an overhead anchor handler, the suction anchor can be operatively connected and secured to, and placed into fluid communication with, the deployment interface. The deployment interface along its connected suction anchor is lowed from the surface vessel into sea water using the dispatcher until the suction anchor contacts the seabed and allowed to self-penetrate below the seabed due to its own weight.

Assembly of a suction pile and a pump system temporary connected by convenient means to the suction space of the suction pile, wherein the pump system bears onto the top of the upward extending suction pile. Between suction pile and pump system a quick connector is operative comprising a pin operated by actuator means of the pump system to move between a releasing retracted and locking extended position. It has one or more of: a pump interface remote from the protective frame; an auxiliary support frame; a hinged lift appliance; a level indicator; a docking cone designed to penetrate the suction pile interface means.

Assembly of a suction pile and a pump system temporary connected by convenient means to the suction space of the suction pile, wherein the pump system bears onto the top of the upward extending suction pile. Between suction pile and pump system a quick connector is operative comprising a pin operated by actuator means of the pump system to move between a releasing retracted and locking extended position. It has one or more of: a pump interface remote from the protective frame; an auxiliary support frame; a hinged lift appliance; a level indicator; a docking cone designed to penetrate the suction pile interface means.

A suction bucket for a seabed foundation for an offshore facility is provided. The suction bucket is arranged for being embedded into a marine sediment. The suction bucket includes a lid and a sidewall. The sidewall is segmented into a first circumferential segment and at least a second circumferential segment. The first circumferential segment is connected with the second circumferential segment. The first circumferential segment and the second circumferential segment are attached to the lid of the suction bucket. Furthermore, the first circumferential segment and the second circumferential segment each contains at least one substantially planar section. Furthermore, a method to manufacture a suction bucket for a seabed foundation for an offshore facility is also provided.

Disclosed embodiments include a suction pile vent plug having a cylindrically-shaped body having a sealing element, a plurality of coupling features, and a handle connected to the cylindrically-shaped body. The sealing element is configured to form a watertight seal with walls of a suction pile vent into which the vent plug is installed. The plurality of coupling features are configured to engage with corresponding coupling features of the suction pile vent. The movable handle is configured to be moved into one or more locked configurations. Disclosed embodiments further include a suction pile vent having a hollow cylindrically-shaped body having coupling features. The coupling features are configured to engage with corresponding coupling features of a suction pile vent plug to thereby mechanically couple the suction pile vent plug to the suction pile vent. Disclosed embodiments further include a fluidic port that fluidically couples a suction pile to a removable fluidic coupling.

A split mooring system may include at least two vessels in a body of water and a plurality of mooring lines. The plurality of mooring lines may be attached to the at least two vessels and configured to fix and maintain a position of the at least two vessels in the body of water relative to each other. A first vessel of the at least two vessels may be adjacent to a second vessel of the at least two vessels. The plurality of mooring lines may be attached to sides of the first vessel and the second vessel. The sides of the first vessel and the second vessel with mooring lines may face open water of the body of water.