1. To determine the effect of towing speed on the selectivity of a 110 mm diamond mesh cod-end fished with a 90 mm square mesh panel and without a lifting bag.
2. To undertake the same as objective 1 but use a 120 mm diamond mesh cod-end with no square mesh panel or lifting bag.
Robert J Kynoch (Fisheries Research Services Aberdeen Marine Laboratory)
east of Shetland
Biology and fisheries
Quantity: number of hauls = 15 Description: valid selectivity hauls of a 110mm diamond mesh and 120mm diamond mesh