Project Jumper: reduction of trawl impact on seabed

The project « Jumper » fits into the commitment taken by the professionals during the Grenelle de la Mer: to reduce the impact of trawls on seabed but its ambit is widespread and reflects a collective interest for the professionals using bottom trawl.

The impact of trawls on benthic habitats, and more specifically otter trawls, makes this method unpopular. The project JUMPER is dedicated to the optimization of an otter board prototype with low environmental impact, fuel efficient and to develop a monitoring system of the door impact. « Jumper », the low-impact door prototype, has been developed within the frame of two projects (Degree and Optipêche).

This door, in its conception, operates a swinging motion as soon as it hits the bottom, adapting it to the relief. First attempts of the prototype have shown, besides the impact reduction on habitats, a potential for fuel efficiency. However, in their current form, these doors require a slower and longer spinning.

The project JUMPER has for objective a better submergence and a maximized fuel efficient capacity. To prove its true interest and to concretize its industrial applicability, the JUMPER board will be adapted to several vessel sizes in different fisheries.

The project Jumper is carried on by the CNPMEM in partnership with Ifremer and the company Morgère. It is financially supported under the call for projects « selectivity and energy save » of France Filière Pêche. It lasted from the early 2013 to mid-2014.

This project has been awarded by the pôle mer Bretagne.

Main results so far

Tests conducted in April 2013 in basin and on the IFREMER vessel Gwen Drez led to the conception of a new Jumper door which may be adjusted in an almost optimal manner in order to ensure proper gauge and stability when fishing and an easy shooting. Next step consists in tests at sea on different type of fishing vessels.

With financial assistance of France Filière Pêche

Mis à jour le 27 March 2015