Since, the mid fifties with opening of industrial trawl fishery in Cameroon, data collection system is based on landings and vessel captains’ statements logbooks, difficult to use for stock assessment purpose thus proper management. Various stocks assessments surveys conducted, show an overexploitation costal resource decrease base (Meke, 2015). Besides, country threatened by a self-ban shrimp’...

Abstract: Aiming at improving the security of a semi-pelagic trawl in a complex working environment, this paper proposes a threedimensional tracking control system for the guidance of a semi-pelagic trawl on a complicated trajectory. The flexible nonlinear trawl system is simplified as a mass-spring-bar model. A hierarchical backstepping controller is then designed for the trajectory tracking o...

Abstract The offshore Greenland halibut (Reinhardtius hippoglossoides) fishery, west Greenland, employs demersal trawl gear at depths of 800–1400 m. In contrast to many deep-sea fisheries, the target stock appears stable and fishery is significant economic importance. Recent Marine Stewardship Council certification this highlighted paucity knowledge benthic habitats trawling impacts, which stud...

Economic comparison of single-rig and twin-rig trawl for nephrops Economic comparison of single-rig and twin-rig trawl for nephrops