A hydraulic platform crane failed while lifting a 14,500 lb. (6525 kg) tank from a supply boat. As the load reached platform height, the crane boom did not respond to boom up control input and began to lower. The boom bottomed out and the crane parted at the ball ring. The crane operator, crane and load fell approximately 65 feet (19.5 m) into the sea. The crane operator immediately swam to the boat and suffered only a minor shin injury.