1. FLUME TANK TESTING OF AN INNOVATIVE FOOTGEAR TECHNOLOGY USING SIMULATED SEABEDS.
- Author
-
Araya-Schmidt, T., Legge, G., Santos, M., Bayse, S. M., and Winger, P. D.
- Subjects
FOOTWEAR ,FLUMES ,DREDGING (Fisheries) ,ENGINEERING models ,BYCATCHES ,OCEAN mining ,OCEAN bottom - Abstract
There have been many advancements in bottom trawls to reduce physical and biological impacts on benthic habitats. In this study, an innovative aligned-rolling footgear was designed and evaluated for use in the Northern shrimp (Pandalus borealis) fishery in Eastern Canada. We document a novel technique for comparing traditional and experimental footgears using engineering models and simulated seabed conditions in a flume tank. Footgears were compared using direct observation and by measuring warp load during simulated smooth, semi-rough, and rough seabed conditions in contact with bosom or wing footgear sections. Results revealed that the traditional footgear bottom trawl experienced significantly higher warp loads for smooth (0.26 t higher), semi-rough (0.68 t higher), and rough seabed conditions (0.74 t higher) in the bosom section. In the wing section, traditional bottom trawl produced significantly higher warp loads for smooth (0.38 t higher) and rough seabed conditions (0.30 t higher). Bottom trawl with aligned-rolling footgear reduces seabed contact up to 71.5% depending upon depth of penetration modelled. To our knowledge, this study represents the first attempt at using simulated seabed conditions in a flume tank testing footgear technology. [ABSTRACT FROM AUTHOR]
- Published
- 2021