This study evaluated the performance of three dredge configurations, 5-row apron, traditional 7-row apron, and extended-link apron, under commercially representative conditions using paired dredge deployments across four research trips conducted between September 2024 and July 2025 on Georges Bank and adjacent areas. A key innovation of this work was the integration of a tensiometer to measure warp tension in real time, providing a novel approach to assessing dredge loading, performance, and catch loss throughout both towing and haul-back phases. 

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Warp tension metrics were strongly associated with catch rates and provided insight into dredge performance. Specifically, increases in the rate of tension accumulation were positively correlated with catch, while reductions in vessel speed were associated with increased catch rates. Environmental factors, including depth, substrate composition, and vessel orientation relative to wind also significantly influenced catch efficiency. These findings demonstrate that tensiometers can serve as effective tools for real-time monitoring of dredge saturation and performance, with direct applications for improving fishing efficiency.

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Analysis of haul-back dynamics revealed that catch loss is strongly influenced by apron configuration, hanging duration, and scallop size. Across all gear types, larger scallops were consistently retained at higher rates, while smaller individuals were more susceptible to loss during retrieval. The 5-row apron exhibited a complex size-dependent retention pattern, indicating a post-tow redistribution process that may trap smaller scallops within the catch matrix at longer hang times. While the extended-link apron had a more intuitive size-dependent retention pattern that was enhanced with increasing sea state condition. 

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Overall, the additional testing of the 5-row apron configuration demonstrated that while maintained scallop catch rates are comparable to the 7-row configuration the reduction in windowpane flounder bycatch is modest relative to an extended link apron. The 5-row apron configuration as required by Framework Adjustment 25 represents an incremental improvement rather than an impactful solution for reducing windowpane flounder bycatch in the sea scallop fishery. Additionally, the application of tensiometer technology provides a powerful new tool for understanding dredge dynamics and optimizing fishing practices.