DELPH v3.1 comprises DELPH SAS, Seismic, Sonar, and Magnetic components as built on modular, common architecture with acquisition, processing, and interpretation layers. Optimized workflow allows full integration of SAS data together with side-scan sonar, bathymetry, sub-bottom profiling, magnetic, and other information layers. Also, features such as batch data processing and mosaicking, target picking and management, interpretation, and seabed classification are available for SAS imagery.