Technical specifications of the trawls and rigging.

Each trawl body was attached to an extension section with a Nordmøre-grid installed and codend (total weight of 5.80 kg) and had a catch surface area of 0.23 m2. Twine areas were calculated for those surfaces that were at an angle to the direction of towing (i.e. do not include the parallel panels of netting in the codend or extension). Total system area is the sum of the twine, ground-chain (0.073 m2), two otter boards, six sweep (0.09 m2), two frame-line (0.18 m2) and catch areas for each trawl. The total weight of all sweeps was 2.28 kg.
T, transversals; N, normal; B, bars.