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Floating Dry Dock Design

Caddell Dry Dock of Staten Island, NY, contracted JMS to design a floating dry dock capable of handling the largest tank barges in the Northeast. The goal was to maximize lifting capacity consistent with structural requirements and operational considerations in order to be able to service the largest vessel customers in the tug and barge industry. A detailed structural design was developed and JMS provided all structural drawings and calculations consistent with obtaining ABS approval for the floating dry dock design.

The floating dry dock is 420 feet long with 100 feet between the 30 foot tall wing walls. The dry dock has a rated lifting capacity of 7,300 LT at 18 LT/ft of keel block loading. It is segregated into 8 pairs of compartments with a safety deck 12′ above the pontoon deck. The design incorporated features such as side access doors through wing walls for moving machinery, pumping system details consistent with the dry docks already in operation at the Caddell Dry Dock facility, generator and control housing.