Report on an acoustic survey for mackerel in the North Sea, Skagerrak and Kattegat in July - August 1987
Original version
This report is not to be cited without prior reference to the authorsAbstract
An acoustic survey in the North Sea, Skagerrak and Kattegat
was carried out in July-August 1987 by vessels from Denmark
and Norway. This paper gives the distribution and the abundance
estimates for mackerel.