Figure 1

Map of SBC, a region off the coast of southern California (inset).
The location of the HARP (34°16.617′N and 120°01.492′W), AIS receiving station (34°24.5′N and 119°52.7′W), north and southbound shipping lanes (dashed lines) and 100 m bottom contours are shown. The map was created using Matlab- Mapping Toolbox.