The wakesurfing system may include a first and second reel assembly arranged and configured to retract a discarded surf rope. The second reel assembly may be replaced by a retraction device. The first reel assembly may have a telescoping and rotatable boom and may be coupled to a side of the watercraft. The second reel assembly or retraction device may be coupled to a rear portion of the watercraft. The first reel assembly may have a first reel cord coupled to a handle of the surf rope, and the second reel assembly may have a second reel cord coupled to a proximal location of the surf rope. The first reel cord and either second reel cord or retraction device, and the surf rope, may be in a retracted position when not in use, and in an extended position when used by a wakesurfer.

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.

Described is a tugboat 1 for assisting a marine vessel 2 to manoeuvre. The tugboat 1 comprises a hull 11 having a perimeter P. The tugboat 1 also comprises a line handling system 10 comprising a line guide mechanism 100. The line guide mechanism 100 protrudes, or is positionable to protrude, away from the hull 11 for guiding a line 20 of the marine vessel 2 towards a predetermined region R of the perimeter P.

Many embodiments described herein prevent damage to a surf rope and/or watercraft due to a surf rope remaining in the water after it is released by a wakesurfer. The wakesurfing system may include a first and second reel assembly arranged and configured to retract a discarded surf rope. The first reel assembly may have a telescoping and rotatable boom and may be coupled to a side of the watercraft. The second reel assembly may be coupled to a tower, pylon, or ski hook of the watercraft. The first reel assembly may have a first cord reel coupled to a handle of the surf rope, and the second reel assembly may have a second cord reel coupled to a proximal location of the surf rope. The first and second cord reels, and the surf rope, may be in a retracted position when not in use, and in an extended position when used by a wakesurfer.

A method of mooring a floating vessel having a fairlead stopper coupled thereto is provided. The method includes retrieving a line pre-reeved on the fairlead stopper, connecting the line to an upper end of a mooring line, retrieving a second end of the line, connecting the second end to a winch of the AHV, and hauling in the mooring line to apply tension thereto. Also disclosed are mooring lines and systems, including lines having tensioning connectors thereon, such as tri-plate connectors, for stretching lines.

Many embodiments described herein prevent damage to a surf rope and/or watercraft due to a surf rope remaining in the water after it is released by a wakesurfer. The wakesurfing system may include a first and second reel assembly arranged and configured to retract a discarded surf rope. The first reel assembly may have a telescoping and rotatable boom and may be coupled to a side of the watercraft. The second reel assembly may be coupled to a tower, pylon, or ski hook of the watercraft. The first reel assembly may have a first cord reel coupled to a handle of the surf rope, and the second reel assembly may have a second cord reel coupled to a proximal location of the surf rope. The first and second cord reels, and the surf rope, may be in a retracted position when not in use, and in an extended position when used by a wakesurfer.

A method of mooring a floating vessel having a fairlead stopper coupled thereto is provided. The method includes retrieving a line pre-reeved on the fairlead stopper, connecting the line to an upper end of a mooring line, retrieving a second end of the line, connecting the second end to a winch of the AHV, and hauling in the mooring line to apply tension thereto. Also disclosed are mooring lines and systems, including lines having tensioning connectors thereon, such as tri-plate connectors, for stretching lines.

The wakesurfing system may include a first and second reel assembly arranged and configured to retract a discarded surf rope. The second reel assembly may be replaced by a retraction device. The first reel assembly may have a telescoping and rotatable boom and may be coupled to a side of the watercraft. The second reel assembly or retraction device may be coupled to a rear portion of the watercraft. The first reel assembly may have a first reel cord coupled to a handle of the surf rope, and the second reel assembly may have a second reel cord coupled to a proximal location of the surf rope. The first reel cord and either second reel cord or retraction device, and the surf rope, may be in a retracted position when not in use, and in an extended position when used by a wakesurfer.

Ocean-bottom node deployment is provided. An example system includes a pulley system which includes a pulley, a traction wheel on a marine vessel and a transport line looped around the pulley and the traction wheel. A plurality of release units are coupled to the transport line at spaced intervals and are configured to selectively secure and release a plurality of ocean-bottom nodes connected respectively thereto. A deflector connects to the pulley system and is configured to position the pulley system relative to the marine vessel. A central control unit is communicatively coupled to the plurality of release units and to the deflector and the traction wheel and includes a central processor. The central processor controls positioning of the pulley system with the deflector and commands each of the plurality of release units to release each of the plurality of ocean-bottom nodes at a predefined position.

The wakesurfing system may include a first and second reel assembly arranged and configured to retract a discarded surf rope. The second reel assembly may be replaced by a retraction device. The first reel assembly may have a telescoping and rotatable boom and may be coupled to a side of the watercraft. The second reel assembly or retraction device may be coupled to a rear portion of the watercraft. The first reel assembly may have a first reel cord coupled to a handle of the surf rope, and the second reel assembly may have a second reel cord coupled to a proximal location of the surf rope. The first reel cord and either second reel cord or retraction device, and the surf rope, may be in a retracted position when not in use, and in an extended position when used by a wakesurfer.