A system includes a frame assembly having a first set of bolt holes arranged in a first pattern, a mounting plate having a second set of bolt holes arranged in a second pattern, wherein the second pattern is the same as the first pattern, a bumper having a third set of bolt holes arranged in a third pattern, wherein the third pattern is the same as the first pattern and the second pattern, and a winch coupled to the bumper.

A system includes a frame assembly having a first set of bolt holes arranged in a first pattern, a mounting plate having a second set of bolt holes arranged in a second pattern, wherein the second pattern is the same as the first pattern, a bumper having a third set of bolt holes arranged in a third pattern, wherein the third pattern is the same as the first pattern and the second pattern, and a winch coupled to the bumper.

Buoy apparatus and buoy control system for identifying an underwater object, and method for identifying an underwater object are disclosed. A buoy apparatus for use underwater, comprises a buoy securely connected to a first end of a rope; a spool structure securely connected to a second end of the rope; a retractable head for engaging the spool structure; and a spool control device for actuating retraction of the retractable head, wherein in response to an instruction from the spool control device, the retractable head disengages the spool structure, and the spool structure releases the rope when the buoy raises toward a surface of water.

Methods, apparatus, and systems are provided for rigging interfaces couple to winch cable terminals that protect outer surfaces of fairleads and rigging devices as connections between objects. In one example, a rigging interface may include curved surfaces adapted to nest against a fairlead. In another example, a rigging device may have one or more removable elements allowing for coupling of the device to other objects.

Methods, apparatus, and systems are provided for rigging interfaces couple to winch cable terminals that protect outer surfaces of fairleads and rigging devices as connections between objects. In one example, a rigging interface may include curved surfaces adapted to nest against a fairlead. In another example, a rigging device may have one or more removable elements allowing for coupling of the device to other objects.

A winch capable of externally connecting motor is to selectively assemble and increase an externally connected motor (a third motor) on a winch driven by a set of motors so that a driving device disposed inside a driving device box of the winch is driven by dynamic power supplied from three motor at the same time to provide greater pulling force and faster pulling rate for a rope wheel of the winch, thereby providing wider scope of application. Moreover, the externally connected motor (the third motor) can be disassembled when there is no need such that dynamic power is provided by two motors so as to save power and energy resource.

A winch capable of externally connecting motor is to selectively assemble and increase an externally connected motor (a third motor) on a winch driven by a set of motors so that a driving device disposed inside a driving device box of the winch is driven by dynamic power supplied from three motor at the same time to provide greater pulling force and faster pulling rate for a rope wheel of the winch, thereby providing wider scope of application. Moreover, the externally connected motor (the third motor) can be disassembled when there is no need such that dynamic power is provided by two motors so as to save power and energy resource.

A hoist mounting apparatus includes a pair of vertical supports. Each of the vertical supports has an upper end and a lower end. Each of the lower ends comprises a mount configured to releasably engage a roof hatch frame. A horizontal support is positioned on and extends between the vertical supports. The horizontal support is freely movable with respect to the vertical supports. The horizontal support has a first end, a second end, a first side edge and a second side edge. The horizontal support is elongated and has a longitudinal axis extending through the first and second end ends. The horizontal support has an elongated opening therein extending along the longitudinal axis. The electric hoist is positionable on the horizontal support such that a cable attached to the electric hoist extends downwardly through the elongated opening.

Methods, apparatus, and systems are provided for rigging interfaces couple to winch cable terminals that protect outer surfaces of fairleads and rigging devices as connections between objects. In one example, a rigging interface may include curved surfaces adapted to nest against a fairlead. In another example, a rigging device may have one or more removable elements allowing for coupling of the device to other objects.

Methods, apparatus, and systems are provided for rigging interfaces couple to winch cable terminals that protect outer surfaces of fairleads and rigging devices as connections between objects. In one example, a rigging interface may include curved surfaces adapted to nest against a fairlead. In another example, a rigging device may have one or more removable elements allowing for coupling of the device to other objects.