The present invention relates to apparatus and a method of embedding a plate anchor. The method comprises providing a plurality of embedment modules each of which is suitable for embedding a plate anchor within a different type of soil. The method comprises determining the type of soil of a seabed at a target site and selecting an embedment module based on the type of soil at the target site. The embedment module is removably mounted within a modular follower assembly. The modular follower assembly is deployed from a vessel and the embedment module is actuated to drive the plate anchor into the seabed. The modular follower assembly is then retrieved to the vessel. The modular follower assembly is reconfigured to provide the modular follower assembly with different embedment modules for a subsequent deployment and to embed further plate anchors within different soil types.

A mooring connector assembly (3) has a body (10) arranged to be pivotally mounted to a structure (1), such as a tethered buoy, to be moored for movement about a pivot axis. At least a part of the body extends below the pivot axis when so mounted and oriented for use. A line stopper (17) is mounted to the part of the body which extends below the pivot axis in use and is operative to retain a mooring line (2) relative to the body. The body is configured to receive a tensioner (20) for tensioning a mooring line (2) retained by the stopper such that the tensioner urges the line at a point which is below the pivot axis when the body is oriented for use. The body may be an elongate tube (10) pivotally connected to a structure to be moored (1) at one end and fitting with a chain stopper (17) at the opposite end. The tube is configured to receive a chain tensioner (20) between the chain stopper (17) and pivot axis.

The invention relates to a system and to a method for the transfer of a line or a heaving line for a line, wherein the system comprises at least a flying vehicle, provided with a connection provision adapted for releasably connecting a line or heaving line to said flying vehicle

The present invention relates to a subsea structural connector (20) used in the offshore oil and gas industry for remotely joining elements of production and drilling vessel mooring systems and other subsea equipment. This invention relates to a connection mechanism that facilitates automatic latching of two components (1, 2) upon engagement, and then remotely controlled actuation of a device that secures the connection. Specifically, this invention relates to a securing mechanism that creates residual stress between the connected components (1, 2) such that the connector (20) can withstand high variable axial, shear, torsional and bending loads while minimizing the propensity for fatigue damage within the mechanism.

An unmanned surface vehicle for underwater investigation that is free from negative effect of a thruster is provided. A position control system for an unmanned surface vehicle includes: at least one mooring device fixed on the ground; a wire fed and wound from the mooring device; an unmanned surface vehicle connected at the tip end of the wire; and at least one rudder equipped on the unmanned surface vehicle, wherein the mooring device includes a mooring device control device for controlling the feeding and winding of the wire, and a rudder control device for drive-controlling the rudder, the mooring device control device and the rudder control device control the position of the unmanned surface vehicle to reach the target.

The disclosed method measures a line angle of a mooring line connected to a floating object floating in a body of water, the mooring line being connected between the floating object and an anchoring body disposed in a bed of the body of water, in which the floating object is coupled to the mooring line by a line connector. The method includes: defining at least three data points each associated with a respective location on the mooring line; on the data points obtaining a value associated with the location on the mooring line; determining parameters of an equation describing an anchor line curve from the values associated with the location on the mooring line for the data points; calculating at a predetermined position on the mooring line a line angle of the mooring line from a derivative of the equation at the predetermined position based on the parameters.

An off-shore wind turbine system is assembled using a platform or jack-up vessel, and a first base anchored to the seafloor at a blade assembly off-shore location. A buoyant tower is attached to the first base. A crane provided on the platform or jack-up vessel is used to lift blades and blades, which are then coupled to a turbine held in a nacelle provided at the top of the buoyant tower. The buoyant tower, the nacelle, and the blades are detached from the first base. The buoyant tower, the nacelle, and the blades are towed to a wind farm and connected to a second base provided in the wind farm. The buoyant tower, the nacelle, and the blades are further stabilized using mooring lines spanning between the buoyant towers and other bases provided in the wind farm. The first base and/or the second base include anti-rotation features.

The present disclosure generally relates to a system and method for installing a tubular element, such as a suction pile, in a bottom of a body of water. The system comprises a tubular element and a deintensifier in fluid communication with the tubular element. The deintensifier is configured to be exposed to an ambient pressure external to the tubular element and reduce pressure within the tubular element. The method comprises lowering the tubular element to the bottom of the body of water, filling the tubular element with water at ambient pressure, and exposing the water within the tubular element to a deintensified external ambient pressure so as to withdraw the water out of the tubular element.

A sensing device or apparatus (110) for inserting into a hole, cavity or receptacle (120), such as a hole, cavity or receptacle in a shaft, locking device or load pin (20) for a connector (5), the sensing device or apparatus (110) having an elongate member (125) such as a beam or rod; one or more sensing elements (180a, 180b, 180c, 180d, 180b, 180c, 180d) for sensing load, strain, deformation or force in or on the elongate member (125); wherein the elongate member (125) is provided with at least one engaging portion (130) for engaging an inner wall of the hole, cavity or the receptacle (120). A corresponding shaft, load pin or locking device, connector and methods of using, measuring and assembling are also provided herein.

An unmanned surface vehicle for underwater investigation that is free from negative effect of a thruster is provided. A position control system for an unmanned surface vehicle includes: at least one mooring device fixed on the ground; a wire fed and wound from the mooring device; an unmanned surface vehicle connected at the tip end of the wire; and at least one rudder equipped on the unmanned surface vehicle, wherein the mooring device includes a mooring device control means for controlling the feeding and winding of the wire, and a rudder control means for drive-controlling the rudder, the mooring device control means and the rudder control means control the position of the unmanned surface vehicle to reach the target.