Crane Loads Stone into Transport Barge (Video)

This video shows the excavator moving stone blocks to the water's edge at Salisbury beach and a large crane picking up the granite with a grapple and loading it into a transport barge.It takes a lot of skill and patience on the part of the crane operator to position the grapple over the stone block and get a good grip on it so it can be safely lifted off the ground. The grapple is controlled by three cables. There is a lift cable the hoists it up and down. A second cable controls the opening and closing of the hooks of the grapple. A third cable controls the grapple's horizontal position. It pulls the grapple closer to the crane (horizontally) or allows it swing out away from the crane.