The types of bottom observed by the echo sounder along the cruise tracks were classified according to their assumed suitability for bottom trawling as follows:
1. Even smooth bottom, likely to be suitable for trawling.Figure 3 presents the results with some interpolation between cruise tracks. Some uncertainty is then of course introduced since only a narrow strip of bottom has actually been observed.
2. Generally smooth, but more uneven bottom; care must be taken to select fishing path.
3. Rough bottom, unsuitable for trawling.
4. Very steep bottom, unsuitable for trawling.
