The displayed grid is the 80 km x 80 km grid resolution used in the model (Lambert Azimuthal, coordinates origin in 60°N 58°E). The cells of the four North-Norwegian fishing ports (Svolvær, Tromsø, Hammerfest and Vardø) are shown and the range of large and small fishing vessels operating from these ports is indicated by circles of radius 4 (dashed curves) and 8 (solid curves) cells for small and large vessels, respectively, as in Eide (2003).