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Sid Schulman, D/V Glomar Challenger (ship) crew member, operating the manual controls on the ship's bridge during Leg 57 of the Deep Sea Drilling Project. Although the dynamic positioning system which held the D/V Glomar Challenger (ship) over a bore hole at the bottom of the ocean for days did work in automatic mode during the drilling operations, the manual operation was practiced for emergency purposes. 1977.

Sid Schulman, D/V Glomar Challenger (ship) crew member, operating the manual controls on the ship's bridge during Leg 57 o...