Metal Trades Builds Hull for Barge Conversion

Tuesday, September 29, 2009
Photo courtesy Metal Trades, Inc.

Metal Trades, Inc. (Hollywood, SC) has built and delivered the outer hull for a double hull fuel barge conversion for Cross State Towing Company of Jacksonville, FL. The 256 ft long by 56 ft wide outer hull was designed by Glowacki Engineering to retrofit on the outside of the 17,000 BBL cargo tank bay in compliance with USCG and OPA 90 requirements.

According to Randy Brown, Vice President of Business Development for Metal Trades, “This was an interesting project that involved building and launching only the outer hull, requiring us to take extra precautions for launching because, without a deck or inner hull in the cargo tank bay, the barge outer hull did not have very much longitudinal stiffness. We had Saber Design and Analysis Services perform Finite Element Analysis (FEA) of the hull to verify transfer car placement and temporary bracing while ensuring that peak stresses remained low in the hull during transfer and launch.”

Charleston Heavy Lift, Inc. was contracted to perform the final lifting and setting of the 353 ton inner hull cargo bay within calm waters of the intra-coastal waterway close to shore. The lift was completed as planned within a few hours. The final welding of the inner hull to the outer hull was completed by Cross State Towing at its own shipyard in Jacksonville, Fla.


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