Entering Bethlehem Steel's Hoboken, N.J., Shipyard is the Glomar Challenger, unique deep sea drilling ship which recently brought up the oldest sediments yet recovered from the world's ocean basins -- Middle Jurassic limestone 160 million years old. The cores were recovered in the Atlantic in waters three miles deep, and they will be used to interpret the formation and early history of that ocean. This ocean-bottom coring, known official as the Deep Sea Drilling Project, is sponsored by the National Science Foundation and is under the management of the Scripps Institution of Oceanography, of the University of California at San diego. Scientists who participated in this historic phase of the proejct described their findings at a news conference in New York city today (June 1). While at the Bethlehem Hoboken Yard the Glomar Challenger will take on additional supplies for the next portion of the project. Owned by Global Marine, Inc., the twin-screw, diesel-engined craft has a length of 400 feet, beam of 65 feet, and draft of 20 feet. Her derrick top is 194 feet above water level