380results about "Anchor handling/lashing" patented technology

A method is disclosed for deploying a suction pile anchor in which flood valves are opened on the top of a suction pile and the suction pile anchor is off loaded from the anchor boat and lowered it to the sea floor. The suction pile anchor is set down and the rate of feed is adjusted to match the rate of self-penetration. An ROV with pump capability closes the flood valves on the top of the suction pile and attaches to the pumping port of the suction pile. The pump of the ROV operates to draw down the suction pile to full depth and brings the first load line connection and the attached first end of the load line well below the mudline while the second load connection at the second end of the load line is supported above the mudline. The ROV disconnects from the pump port and connects a mooring line to second the load connection. Another aspect of the present invention is a suction pile system having a suction pile with an ROV compatible pressure port and a flood valve at the top. A load support system includes a first load connection on the side of the suction pile with a load line connected to the first load connection. A second, ROV accessible load connection is provided at the distal end of the load line.

An apparatus for installing subsea components includes the use of a motion compensator to counterbalance and offset load on the component and lowering wire caused by movement of the vessel as a result of waves and wind.

Provided are a variety of variable-buoyancy structures, such anchors, together with methods and apparatuses for fabricating the same in the water. Generally speaking, such methods and apparatuses use a variable-buoyancy platform-based mold, initially floating, that includes multiple forming cells for fabricating the resulting variable-buoyancy structure. As a result, the variable-buoyancy structure produced has multiple corresponding structural cells having open bottoms. However, the structure may be fabricated so as to include a flexible or rigid container within some or all of such open-bottom cells.

A system wherein a vessel (12) is moored by catenary mooring lines (14, 15, 16) that include polymer cable lengths (30) that can stretch under tension, which indicates the amount of polymer stretching. In the absence of polymer line stretching, a measured actual drift or excursion of the vessel from its initial position (as determined by a GPS system) would result in a predetermined nonstretch inclination (graph 50) of the top (42) of a first mooring line (14) from the horizontal. If the inclination is greater than the predicted nonstretch inclination, this indicates that the polymer line has stretched, with the amount of stretch indicated by the increase in inclination over the predicted nonstretch inclination.

A rope handling system for an offshore vessel for handling of synthetic rope (3) for heavy lifting and deployment operations offshore, the system comprising multiple winch drums (11) adopted for housing a predetermined length of rope (3), a spooling system (13, 17) to spool in and spool out rope on the drums (11), a transfer system comprising of sheaves (14, 21, 22) for leading the rope (3) between a drum (11) and a traction winch (15), the traction winch (15) comprising three or more sheaves (30), where the sheaves are arranged so that rope may be arranged from one sheave to the next substantially following a common tangent of the two sheaves and so that the rope rests against about half the circumference of each sheave, and where each sheave operated by an independent motor (32), and where a rope stopper (4) is arranged downstream of the traction winch relative to the drum (11) upstream of the traction winch, is described. A method for handling rope during heavy lifting and deployment operations, and a method for loading rope onto the system are also described.

The invention discloses an automatic mooring device for a ship and a ship, wherein the automatic mooring device for a ship includes a fixed column, a mooring component, a driving device and a controller, the fixed column has a step portion facing forward; the mooring component includes a mounting One end of the multiple claws is reversibly installed on the front end of the installation cylinder, and has a clamping position close to each other and a release position far away from each other. When in the clamping position, the multiple claws use It is clamped with the step of the fixed column so that the mooring component is fixed with the fixed column. When it is in the unlocked position, multiple claws are used to untie the fixed column; the driving device is installed on the installation cylinder and drives multiple The jaws are reversed so that the multiple jaws switch between the clamping position and the tripping position; the controller is electrically connected with the driving device to control the operation of the driving device. The technical scheme provided by the invention can automatically connect the ship with the wharf and realize the automatic berthing of the ship.

A securement assembly is provided. A support has a lower end and an upper end. The lower end is coupled to the securement assembly. A spear has a leading end and trailing end with a central extent between the leading and trailing ends. A cylindrical member has a passageway slidably receiving the spear between the leading and trailing ends. Adjustment components couple the cylindrical member to the upper end of the support. The adjustment components are adapted to move the cylindrical member and spear between any of a plurality of orientations. The plurality of orientations include a generally horizontal orientation for storing and transportation and a generally vertical orientation for deploying and use.

A method is disclosed for monitoring the position of a floating object. The method starts by receiving as input at least a position of the floating object, and an orientation of the floating object. A horizontal distance between the floating object and an anchor coupled to the floating object is then calculated. A position of the anchor is then calculated from the position of the floating object and the orientation. An area is set based upon the position of the anchor, and it is determined whether a present position of the floating object is within that area. An alarm signal is provided when the present position of the floating object is outside the area.

The invention provides an anchor for an ice surface. The anchor comprises a supporting module, a feeding module and a spindle module and is characterized in that the feeding module is fixedly mounted on the upper end face of a supporting base through an electric cylinder fixing seat at the end of a servo electric cylinder, and the upper end face of a lower base of the spindle module is fixedly mounted on an output shaft of a spindle motor. By spindle rotation and downward feeding movement for perforating the ice surface, retractile claws extend outwards to be embedded into an ice layer, manual participation is avoided in a fixing process, and accordingly labor saving, high efficiency and stability in fixing are realized.

The invention discloses an autonomous anchor dropping control method and system of a driverless ship. Whether anchoring is appropriate or not is judged according to the environment state of the selected anchor ground, the state of the ship, the weather and sea conditions, the actual environment and the state of the ship are judged according to the range where parameters belong, anchor dropping isconducted by selecting different anchor dropping modes and methods under different situations, the optimal anchor dropping effect is achieved, and intelligent anchor dropping of the unmanned ship is achieved. Autonomous anchor dropping is conducted through anchor dropping equipment, artificial intervention can be reduced, the anchor dropping efficiency is improved, quick and accurate anchor dropping is achieved, and safety of the ship within the anchoring time is improved.

The invention discloses a chain stopping device and a windlass, and belongs to the technical field of anchor moored positioning of ships and offshore platforms. The chain stopping device comprises a chain stopper and an anchor chain wheel rotatably mounted on a frame of the windlass, the anchor chain wheel is provided with a plurality of claws along the circumferential direction of the anchor chain wheel at intervals, the chain stopper comprises a base and a stop arm, the base is mounted on the frame of the windlass, the stop arm is movably mounted on the base and mutually matched with the claws, and one end of the stop arm is abutted to one of the claws when the stop arm is positioned at a first movable position, so that the anchor chain wheel keeps static. The claws of the anchor chain wheel of the windlass are retained by the chain stopper, so that the anchor chain wheel is static, and an anchor chain is stopped. The chain stopper directly contacts with the claws of the anchor chain wheel instead of contacting with the anchor chain, so that the anchor chain cannot be damaged. The chain stopper is directly mounted on the frame of the windlass and not fixed on a deck (or in a cabin), so that the space of the deck (or the cabin) can be saved.

Cutting device, method and use are for cutting of a line extending from a floating vessel. The cutting device is structured for placement on the vessel. The cutting device comprises: at least one guide structured for directional steering of the line past a cutting area for the line; and at least one of the following cutting-promoting devices: at least one induction coil device directed inwards toward the cutting area and structured for heating, hence weakening, of the line within the cutting area; and at least one moveable cutting knife with an opposite contact surface directed inwards toward the cutting area and also structured for cutting of the line within the cutting area.

The invention relates to a fixed multifunctional manipulator which comprises a mechanical device, a storage rack, a hydraulic system and an electric control system. A base assembly in the mechanical device is connected with a slewing tower through a slewing support bearing on the base assembly, a main arm is movably hinged to the upper portion of the slewing tower, the front end of the main arm is movably hinged with a hoisting arm and a multifunctional arm, and a multifunctional head is mounted at the front end of the multifunctional arm. A main arm variable-amplitude oil cylinder is movably connected between the main arm and the slewing tower, an operating arm variable-amplitude oil cylinder is movably connected among the main arm, the multifunctional arm and the hoisting arm, a multifunctional head expanding and retracting oil cylinder is movably connected between the multifunctional arm and the multifunctional head, a hoisting winch, a tow hook and a tow hook oil cylinder are mounted on the hoisting arm, the hoisting winch is used for hoisting, and the tow hook is used for hooking unstressed cables. The fixed multifunctional manipulator is capable of completing various complex operations such as anchoring, towing, hoisting and salvaging, high in adaptability to operating environments and extremely high in integration and intelligent degree.

An anchoring system for a boat includes a pair of anchor fixtures, each having a base and a tube carried by and extending across the base. A first of the anchor fixtures is mountable proximate the peripheral edge of the vessel with the tube oriented to extend in a generally horizontal direction. The other, second anchor fixture is mounted exteriorly to the transom of other surface of the hull such that the longitudinal axis of the tube extends generally vertically. The first anchor fixture accommodates an adjustable pole holder that has a stem for selectively engaging with the first anchor fixture to provide anchoring, transporting and stowed conditions. A sleeve is interconnected angularly to the stem for holding a first pole, which may be operated by adjusting the pole holder to engage the bottom of the body of water. A second pole is received by the tube of the second anchor fixture to likewise engage the bottom of the body of water such that the boat is anchored thereto.

A freefall-type windlass includes appropriate gearing for moving the windlass spool in a retrieve direction to wrap anchor cable thereabout or to permit the anchor to drop by gravity thereby unwrapping the anchor cable from the spool. A governor gear is incorporated into the windlass to restrict the rate at which the spool can rotate when the anchor is being paid out thereby avoiding entanglement of the anchor cable and malfunctioning of the windlass.

A method for housing a marine submersible instrument includes providing two or more shell portions for forming a complete shell with a cavity, assembling said shell portions around said instrument thereby forming an enveloping shell, and arranging one or more ropes to bind said two or more said shell portions together in their assembled positions about said instrument.