T&T Marine Salvage has performed a tandem lift of two 690-ton (626-metric-ton) offshore modules at the Port of Houston.

T&T Marine Salvage’s 600-ton (544-metric ton) capacity D/B BIG-T was mobilized from Galveston to Houston to join the 500-ton (545-metric ton) capacity D/B Big John to lift the two offshore modules from the dock and onto a deck barge for TurboFab/Solar Turbines.

The tandem lift was performed with rigging that included four 440-ton (399-metric-ton) CHART-UR-BAR spreader bar systems provided by Carol Crane Rigging & Lifting Technology Inc. Due to the dock structure, the lift was applied by the BIG-T and Big John to reduce the ground reaction as the modules were moved closer to the bulkhead.

source: PennEnergy