A floating dockable liquefied natural gas supply station, comprising: a main hull, a bottom base and a positioning system. The bottom base comprises a base plate or at least two base plates. The base plate is securely connected to a lower lateral side of the main hull by means of a splicing securing system. Therefore, the main hull and the bottom base of the floating dockable liquefied natural gas supply station can be assembled in a modular manner. It is possible to individually construct the main hull and bottom base of the floating dockable liquefied natural gas supply station, and to then use a modular method for connecting and assembling same on the ocean or on land, thus being able to flexibly form various types and dimensions of supply station, allowing for docking transport vessels accommodating various loading capacities of liquefied natural gas (LNG), and reducing the construction cost thereof.

Disclosed is a single-upright-column mooring type wellhead production operation platform, comprising an upright column body, a positioning and mounting assembly, a rotating table, an oil extraction operation platform and at least one inner well slot, wherein the upright column is of a hollow structure; the positioning and mounting assembly is arranged at a bottom of the upright column body; the rotating table is arranged outside the upright column body, is rotatable around an axis of the upright column body and comprises a mooring connection apparatus; the oil extraction operation platform is arranged on the top of the upright column body and is located above the rotating table, and the oil extraction operation platform is provided with an oil extraction operation assembly; and the inner well slot is arranged in the upright column body and can be connected to the oil extraction operation platform. The platform can adapt to an economic index of extraction of a marginal field. Disclosed are a single-upright-column wellhead production operation platform and a rotary mooring conveying system for oil-producing operation at the same time.

A floating wind power platform for offshore power production includes a floating unit, wherein the floating unit includes a first, a second and a third interconnected semisubmersible column each having a longitudinal column central axis and each being arranged in a respective corner of the floating unit, a first and second wind turbine, arranged to the first and second semisubmersible columns, respectively, via a first and second tower respectively, wherein the first and second towers have a first and second longitudinal tower central axis, respectively, wherein the first and second semisubmersible columns are arranged in the floating unit with a first and second angle (α.sub.1, α.sub.2) respectively, with respect to a reference direction (z), and directed away from each other, wherein the first and second longitudinal tower central axes are parallel to the first and second longitudinal column central axes, respectively.

A yoke mooring system and method for disconnecting a moored vessel from a tower structure. The system can include a support structure with one or more extension arms suspended from the support structure. A ballast tank can be connected to the one or more extension arms, and a yoke can extend from and connect to the ballast tank. The yoke can include a tower connector disposed on a second end thereof for connecting to the tower structure. A first winch system can be located on the support structure and connect to the yoke proximate a second end of the yoke via a first line or cable. A second winch system can be connected to the ballast tank via a second line or cable.

An apparatus, method and system for real-time monitoring of underwater risers, cables, and mooring lines based on a Kalman filter. In an embodiment, the system is formed with sensors configured to sense an inclination of a riser segment between riser nodes of the riser between the upper end and the lower end. A data processing system is configured to employ a Kalman filter algorithm to produce real-time estimates of a deformed shape and a stress of the riser segment using the sensed inclination between the riser nodes.

A suspension of axial turret bearing units in a turret bearing comprises a rail support structure mounted on a turret bearing support structure, a circular rail mounted on the rail support structure, a plurality of axial bearing units running on rail, a shaft for each axial bearing unit with the bearing unit attached to the outer end of the shaft, and an inner support structure for supporting the inner end of each shaft. The suspension further comprises an outer shaft suspension close to each bearing unit, comprising a collar with an inner width similar to the width of the shaft and an inner height higher than the height of the shaft, a transitional section connected to the collar, a plate section connected to the transitional section and fastened to a bearing support structure on the turret, wherein the plate section spreads applied loads on the structure.

The disclosed invention relates to a connecting system for connecting a mooring line to a body comprising a first part being attached to the mooring line and connected with a pin having two ends, to a second part being attached to the body and having an arrangement for guiding the pin into a hang-off structure in the second part where the hang-off structure substantially comprises at least one hook. The system is characterized by a connecting structure for a temporary pulling means mounted on the first part in transverse direction to its longitudinal axis and eccentrically to an axial center of gravity of the first part. The invention relates also to a method regarding the application of the system.

An assembly of vessel and turret is provided. The vessel comprises a moonpool and the turret is mounted in said moonpool for a rotation around a turret axis relative to the vessel. The turret comprises a chain table to which mooring lines are connected and through which risers are conveyed, and a turret table vertically spaced above the chain table and connected therewith by a connecting structure. The connecting structure comprises at least three vertically extending columns positioned such at angular intervals that radially outer sides of the columns are located in the vicinity of an outer circumference of the turret. The risers are conveyed through the chain table in such a way that riser sections above the chain table extend towards the turret table within an internal space of the columns.

A dual axes connection device for use with a mooring line, a line guide and pulling means for connecting a floating body and a fixed body is provided. The connecting device comprises a dual axes hinge unit, with orthogonal rotational axes x and y, comprising means for fastening the unit to the floating or fixed body, a connecting link fastened to the hinge unit comprising two parallel arms, a funnel connected to the two parallel arms enveloping the mooring line, and locking means for locking the mooring line to the funnel. The mooring line, the line guide and connection device are positioned in one plane.

Mooring support structures, systems for mooring vessels, and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure than can include a post connected at a first end to a turntable disposed on a base structure. The post can extend out from the turntable and a yoke head connector can be connected to a second end of the post. A distal end of the yoke head connector can provide a disconnection location such that when a yoke head is disconnected from the yoke head connector, the yoke head can fall by gravity from the yoke head connector without contacting the mooring support structure.