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Dynamic Positioning-Drawing shows how the Deep sea drilling Project ship, Glomar Challenger, remains on station while working in water depths up to 20,000 feet. Dynamic positioning usersa computerized system of pulses from acoustic beacons on the ocean floor which are picked up by a ship mounted hydrophone array, fed into a computer, and translated into corrective action by propulsion units (tunnel thrusters and ship propellers) which automatically keep the Challenger precisely on station. The drawing also shows the flexibility of the drill string which weighs 400,000 pounds at a water depth of 20,000 feet.

Dynamic Positioning-Drawing shows how the Deep sea drilling Project ship, Glomar Challenger, remains on station while work...