During cruise MARM009 [Gasperini et al., 2009] 5 piezometers and 10 OBS were deployed by IFREMER in the Sea of Marmara, and the SN4 observatory was deployed at the entrance of the Izmit Gulf on the main strand of NAF. This cruise have been scheduled for the recovery of the IFREMER's instruments and for the maintanance on the SN4 for a new 6 months mission.