The single beam data can be used for quick data presentation, calibration and test. We gridded the data and produced shaded relief and contour maps. Fig. 33 shows the data acquired in the Central Izmit Basin. The unfiltered raw data were gridded with an interval of 0.025 Nm, and the resulting grid was just filtered with a BoxCar of length 125m. Some errors in the digitazion process are evident, however the general quality of the data is good.
