Haulback delay

A delay, usually 10-15 seconds in length, between slowing of a trawl vessel and engagement of the winch to haul in the trawl (Broadhurst et al. 1996). This delay may cause changes to the geometry of the codend, creating additional stimuli that directs the bycatch out through fish escape window/separator devices or may simply allow more time for bycatch species to escape through these devices.

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Study Type: 

Field study in the wild


New South Wales, Australia

Target catch: 


Effect on bycatch species: 

Haulback delay of 10-15 seconds allowed juvenile red spot to escape through the square mesh panels

Effect on target catch: 

No difference in the catch or weight of prawns


Bycatch species: 

Reduction technique: 

Fishing Gear: