The reports presented ere form a large amount of data and documentation produced each year on the fish resources off West Africa. The results of the surveys with the Dr. Fridtjof Nansen are considered valid for the areas covered and with the limitations imposed by species determination through test fishing and problems of coverage in time and space. The results should be preferably used in combination with similar data obtained from other vessels, from fishery statistics, catch and effort and biological sampling data. This large-scale acoustic survey allowed determination of major fish distribution patterns in quantitative terms.