Scaring lines—an innovative and flexible solution for the Norway Lobster fishery (Flexselect) (39387)

Project Details


The aim of the project is to develop and demonstrate a simple and effective system which quickly can be mounted and unmounted on all existing bottom trawls. The system will reduce the catch of fish e.g. to improve the species selectivity in the Danish mixed species fishery for Norway Lobster.

The majority of the work on improvement of species and size selection in trawl fisheries have focused on the codend. Scaring lines focus on reversing the herding process between the trawl doors and thus scare the fish out of the path of the trawl. The process is called counter herding and basically exploit the same means to guide fish out of the trawl path as is used to gather the fish in front of the trawl mouth. The developed system will be easy to mount and demount even from one haul to another and thus allows an ongoing adjustment of the properties of the trawl according to the catch composition observed by the fisher.

The principle of scaring lines will be applicable for different sizes of vessels and trawls as well as the number of towed trawls (1-, 2-, and 4 trawl rigging). Efficient scaring lines allows for an improved species selection in the mixed species fishery for Norway Lobster and will thus act as a mean to prevent the quota on choke species is fished up resulting in fishery closures.

DTU Aqua, National Institute of Aquatic Resources (coordinator)
Danish Fishermen PO, Denmark

The project is funded by the European Maritime and Fisheries Fund (EMFF) and the Danish Fisheries Agency.

Research area: Fisheries Technology
Research area: Observation Technology
Effective start/end date07/09/201623/12/2018

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 14 - Life Below Water


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