Aspects technologie pêche de la campagne JUVESU 99

IFREMER's "Fishing Technology" team participated in the JUVESU99 campaign from 1 to 13 September. The equipment tested was the same as that from the SURFET99 campaign, a pelagic trawl with a surface area of 47.75 x 43.75 with netting of 500 metres of cables, 120-metre arms of equal length above and below, and a ballast of 40 kg to each wing tip The pelagic panels used were panels from the company TYBORON of "type 8" lent through the intermediary of the Kéroman company, Dock et Entrepôts Maritimes. The trawl's collection of balls consisted of a cluster of ten 11-litre balls on each upper wing tip, and a cluster of five 11-litre balls on each side of the square. The total collection of balls was therefore thirty 11-litre balls along the back rope of the trawl, with each cluster of balls fastened along the threadline via snap hooks. The latter made it possible to untangle the balls before the trawl moves onto the retractor. The only modification done to the rigging during the JUVESU99 campaign by the crew focused on simplifying the operation of retrieval on the retractor: the 5-metre legs and the 7-metre protractors, initially mounted wing to wing, were eliminated. The rest of the rigging was identical to that used during the SURFET 99 campaign. During the campaign, we withdrew the upper leg of the port panel, which always had a tendency to rise to the surface before the starboard panel. After this modification, the fishing train was better balanced.