Pilings protrude from water. Crane swirl piling around in position for the pile driver. Barge is out on bay in the background. Merchant ship in the far background. One man in small boat as the pile is swung around. Two crane booms lowering pilings into position. Several piling protrude from water. Surveyor behind his transit. Man swims around base of a piling and another man assists him. Steel pilings protrude from water. Crane aboard huge barge. Crane swinging its pile driving unit and positioned on very top of a steel piling.