Multibeam echosounder data collected on Southern Surveyor voyage SS2012_v01 using the Simrad EM300 multibeam echosounder to acquire high resolution seafloor bathymetry and backscatter information. The voyage took place in the East Australian Current off Brisbane from the 20th April to the 30th April, 2012. Ping rate varied according to depth. Data are stored in Simrad *.all raw format at CMAR and Geoscience Australia (GA). There are 71 files totalling 700 MB of raw data in this dataset. Additional information regarding this dataset is contained in the cruise report for this voyage and/or the data processing report (as available).