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Images: Refitting the Ship

In March 2005, engineers placed Knorr in a dry platform in Florida to install structural reinforcements needed to ensure the ship's stability during operations of the 30,000-pound long corer. (Photo by Jim Broda, Woods Hole Oceanographic Institution)

Huge structural and reinforcement work was done on Knorr's stern. Installation of a special assembly in the aft-most position allows the entire displacement of the ship to offset the dynamic forces encountered when pulling cores out of the seabed. (Photo by Jim Broda, Woods Hole Oceanographic Institution)

A component known as the stern sheave was installed in the middle of the transom to support the synthetic rope that holds the entire coring load. A steel foundation was installed on the vessel's keel to support the stern sheave. (Illustration by E. Paul Oberlander, Woods Hole Oceanographic Institution)

A month later, the ship eased back into the water 50 tons heavier. So much new steel was added during the shipyard period that the U.S. Coast Guard required an "incline experiment" to reassess the vessel's overall stability. (Photo by Tom Kleindinst, Wood Hole Oceanographic Institution)