A system for anchoring an offshore vessel to a seabed includes a foundation including a longitudinal axis, a first end, and a second end opposite the first end along the longitudinal axis of the foundation, a keying-flap assembly including a plurality of flaps coupled to the foundation whereby the plurality of flaps are configured to pivot relative to the foundation about a plurality of rotational axes associated with the plurality of flaps, the keying-flap assembly having a run-in configuration in which each of the plurality of flaps occupies a first position, and a set configuration in which the plurality of flaps are pivoted from their first to occupy a plurality of second positions, and a follower configured to apply an extraction force to the foundation to transition the keying-flap assembly from the run-in configuration to the set configuration.

A system for anchoring an offshore vessel to a seabed includes a foundation including a longitudinal axis, a first end, and a second end opposite the first end along the longitudinal axis of the foundation, a keying-flap assembly including a plurality of flaps coupled to the foundation whereby the plurality of flaps are configured to pivot relative to the foundation about a plurality of rotational axes associated with the plurality of flaps, the keying-flap assembly having a run-in configuration in which each of the plurality of flaps occupies a first position, and a set configuration in which the plurality of flaps are pivoted from their first to occupy a plurality of second positions, and a follower configured to apply an extraction force to the foundation to transition the keying-flap assembly from the run-in configuration to the set configuration.

A line hauler on a fish tender vessel is mounted to a port or starboard quarter location of a deck of the vessel. A loop of floating line is wrapped around the line hauler, extends toward the bow of the vessel to a pulley mounted on a respective port or starboard side, then extends down to the sea, then extends on the surface of the sea adjacent the respective port or starboard side to at least the location where the line hauler is mounted to the deck, and then extends from the surface of the sea back to the line hauler. The loop of line moves in a circle when the line hauler pulls on the line. Lead lines are connected to the line. Fishing vessels attached to the lead lines are pulled alongside the respective port or starboard side of the vessel when the line hauler pulls the line.

A line hauler on a fish tender vessel is mounted to a port or starboard quarter location of a deck of the vessel. A loop of floating line is wrapped around the line hauler, extends toward the bow of the vessel to a pulley mounted on a respective port or starboard side, then extends down to the sea, then extends on the surface of the sea adjacent the respective port or starboard side to at least the location where the line hauler is mounted to the deck, and then extends from the surface of the sea back to the line hauler. The loop of line moves in a circle when the line hauler pulls on the line. Lead lines are connected to the line. Fishing vessels attached to the lead lines are pulled alongside the respective port or starboard side of the vessel when the line hauler pulls the line.

A mooring line length adjusting device and methods is disclosed. The connecting device is arranged for connecting a lower section and an upper section of a mooring line to respective ends of the device and for adjusting a total length of said mooring line from a previous mooring line length to a new mooring line length. The upper end of the mooring line is connected to a floating unit. At least said lower section comprises a chain segment at its top end connected to the device. The device comprises a locking arrangement to lock said chain segment to the connecting device.

A mooring line length adjusting device and methods is disclosed. The connecting device is arranged for connecting a lower section and an upper section of a mooring line to respective ends of the device and for adjusting a total length of said mooring line from a previous mooring line length to a new mooring line length. The upper end of the mooring line is connected to a floating unit. At least said lower section comprises a chain segment at its top end connected to the device. The device comprises a locking arrangement to lock said chain segment to the connecting device.

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.

A water surface and underwater dual-purpose automatic positioning and tracking system and method, which belongs to the field of marine environment observation technologies. The positioning and tracking system includes: a rope winding and unwinding structure, arranged on a main hull structure; where the rope winding and unwinding structure includes a rope roller and a winding and unwinding rope wound around the rope roller; an auxiliary positioning remote control ship, located outside a main body of the main hull structure, where the auxiliary positioning remote control ship is in transmission and fixed connection with the winding and unwinding rope away from the rope roller; communication control units, arranged on the main hull structure and the auxiliary positioning remote control ship; and an automatic positioning tracker unit, arranged on the hull structure, where the automatic positioning tracker unit is in remote communication connection with the communication control units.

A water surface and underwater dual-purpose automatic positioning and tracking system and method, which belongs to the field of marine environment observation technologies. The positioning and tracking system includes: a rope winding and unwinding structure, arranged on a main hull structure; where the rope winding and unwinding structure includes a rope roller and a winding and unwinding rope wound around the rope roller; an auxiliary positioning remote control ship, located outside a main body of the main hull structure, where the auxiliary positioning remote control ship is in transmission and fixed connection with the winding and unwinding rope away from the rope roller; communication control units, arranged on the main hull structure and the auxiliary positioning remote control ship; and an automatic positioning tracker unit, arranged on the hull structure, where the automatic positioning tracker unit is in remote communication connection with the communication control units.

An anchor winch system includes a support arm, an end effector, a guide channel, a winch, a cable and an anchor. The anchor winch system enables a user to deploy an anchor that is stored within the C or Z channels of a pontoon or tritoon boat. The support arm is mounted along the C or Z channel and the end effector is mounted onto an end of the support arm. The end effector is a holding apparatus that retains the anchor in a stowed position when not deployed. The guide channel traverses through the support arm, and the cable is threaded through the guide channel. The winch is tethered to one end of the cable and the anchor is tethered to the opposite end. Thus, the winch is able to deploy or retract the anchor by paying out or reeling in the cable.