The multibeam data from the EM300 and EM3000 sonars were recorded on HD and tapes on the system's consoles. In addition to this, they were also put on a separate computer for backup on HD and CD-ROMs. This latter computer served the data on an NFS backbone to the two processing computers, that ran MB-SYSTEM and NEPTUNE. The first data processing on board used MB-SYSTEM, whilst NEPTUNE was used for statistical cleaning ans filtering. A total reprocessing is being done using the IFREMER'S CARAIBES.