The instant invention is directed to a active-over-passive coordinated motion
winch designed to be used in combination with a class of existing offshore lifting
systems such as A-Frames, booms or cranes to minimize the relative movement between
a payload position and a destination position occurring commonly in offshore operations.
The configuration of this system allows a remote operated vehicle (ROV) or any
other launched load to be firmly captured until it is delivered to the desired
destination. The configuration of the system also permits towed loads, such as
sonar devices, to closely maintain level tow paths along the sea floor.