Figure 36. Detailed planar view of the combined National Oceanic and Atmospheric Administration surveys in Block Island Sound showing the relatively flat, featureless appearance of the surrounding seabed composed of Holocene marine sediments, a shipwreck, and artifacts from acquisition and processing. Shipwreck is that of a German submarine sunk during World War II. Note the absence of asymmetrical scour around the wreck. Location of view is shown in figure 18.