The multibeam data were pre processed on board by the MB-System [Caress and Chayes (2009)] and GMT software and ISMAR's routines and scripts, using the SIS production DTMS or XYZ ASCII converted data. Further analysis will be performed by industrial packages, like Kongsberg's Neptune. DTM data will be produced, further analyzed and mapped by the GMT package [Wessel and Smith (1995)]. The CHIRP data will be processed by the ISMAR's SEISPHRO package [Gasperini and Stanghellini(2008)], to produce enhanced images of the subsurface seafloor, strata geometry, isopachs etc.