Patent ID: 6932325

Claim:
An active over passive coordinated motion winch device for use in a marine environment to position a payload and neutralize relative movement between said payload position and a destination position comprising: a winch assembly including a drum, said drum having a hub defining an axis of rotation and a pair of flanges at opposing ends of said hub and perpendicular to said axis of rotation; a control assembly constructed and arranged to selectively and operatively engage said winch assembly whereby variable torque and rotational speed or free rotation of said drum is provided; a passive heave compensation assembly mechanically and fluidly connected with said control assembly, said passive heave compensation assembly including means for providing passive coordinated reciprocal movement between said payload position and said destination position; an active heave compensation assembly mechanically connected to said winch assembly, said active heave compensation assembly including means for providing active coordinated reciprocal movement between said payload position and said destination position; whereby said passive heave compensation assembly and said active heave compensation assembly cooperate with said winch assembly to reciprocally adjust the instantaneous payload position thereby neutralizing the relative movement between said payload position and said destination position.