Crandall Railway System Again Proves Its Versatility/Dependability

The docking of the U.S. Navy's DDG-2 Adams on Atlantic Dry Dock's new 4,000-ton Crandall drydock shows once again the versatility of today's modern railway drydock.

To accommodate the locations and projections of the vessel's two sonar domes, the cradle had to be modified with the installation of a pit within its deck area to provide access for the after dome, while a gap was provided between the forward end of the main cradle and a detachable pony cradle to accommodate the forward dome. The vessel was docked on 9-foot-high steel keel block towers to provide the necessary docking clearances. The cradle, being 60 feet between uprights, allowed the vessel to enter the dock between the 9-foot-high keel block towers and the retracted sliding bilge blocks to its predetermined forward docking position. Once reached, the vessel was centered in the dock and secured for grounding.

The ability of the cradle to be modified easily to suit particular dockings proves once again that today's railway is still one of the most economical and secure means of drydocking and transferring vessels of up to 6,000 tons displacement.

For further information and free literature on railway and transfer systems from Crandall Dry Dock Engineers, Inc., Circle 25 on Reader Service Card

Maritime Reporter Magazine, page 49,  Nov 1988

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.