This concerns towed gears. In some situations a change in towing speed can dramatically change the composition of the catch. It may be worth considering this as an easy option for reducing by-catch.
Size selectivity
By changing towing speed the catch composition of any towed gear may be changed. It may be possible to alter the size of fish caught and/or the species of fish caught.
Vessel towing at sea
Other information
This concerns towed gears. In some situations a change in towing speed can dramatically change the composition of the catch. In towed gear, using sweeps and bridles to herd fish into the trawl, the angle of these sweeps and bridles in relation to the towing speed can make a big influence on both the species and size of fish caught.
