On the northern shelf from the sheltered area around Santa Cruz northwest to Point Ano Nuevo, the innermost survey lines were run into water depths as shallow as 5 meters. However in most other areas, shallowest lines were at about the 10 meter isobath, leaving a significant data gap to the shoreline. Interior gaps in the interpreted coverage are due to missing sidescan data, whether from non-overlapping tracklines, instrument failure, or corrupted data files. Polygon and chain-node topology present. Every polygon has a label and all polygons are closed.
Every line has a label.
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