the horizontal opening of this trawl is provided by a beam, made of wood or metal, which may be 10 m long or more. Beam trawls are used mainly for flatfish and shrimp fishing., small trawl held open by a transverse bar of wood

the horizontal opening of this trawl is provided by a beam, made of wood or metal, which may be 10 m long or more. Beam trawls are used mainly for flatfish and shrimp fishing., small trawl held open by a transverse bar of wood