Rapportserie: Toktrapport ISSN:1503-6294 Publisert: 20.10.2021 Oppdatert: 01.03.2022
In 2017, the Norwegian Seafood Research Fund (Fiskeri- og havbruksnæringens forskningsfinansiering; FHF) received input from blue whiting fishermen recommending that research should be conducted to investigate challenges regarding catch control and health and safety in the blue whiting fishery. The Institute of Marine Research (IMR), the Directorate of Fisheries (FDir) and FHF contributed to a feasibility study, with the aim of investigating the likely causes of bursting and sinking codends in the blue whiting fishery in the north-east Atlantic. This preliminary study revealed 3 main challenges:
A danger of bursting and sinking trawl codends bags at the surface, following explosive decompression of the captured blue whiting (and their swimming bladder gases) due to a rapid ascent from fishing depths of >400m.
The preliminary results were used as a justification for a project to specifically address these challenges, Catch Control in the Blue Whiting Fishery [Fangstkontroll i fisket etter kolmule, FHF-prosjekt nr 901542], which commenced in 2019. The project's goal is to find methods that reduce the risk of bursting and sinking codends in the blue whiting fishery, as well as regulate the catch based on the remaining load capacity of the vessel.