This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E03, which departed Hobart 2015-04-16 and returned on 2015-04-23. The Kongsberg EM7122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope offshore from Maria Island. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 20 files totaling 0.8 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are not yet available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E05, which departed Hobart 2015-05-01 and returned on 2015-05-05. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope offshore from Freycinet Peninsula. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 62 files totaling 1.6 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Due to the shallow nature of the inshore site and the duration of this survey over several tides, tide corrections will need to be applied from AusTides or from the data from the Triabunna tidal station. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E03, which departed Hobart 2015-04-16 and returned on 2015-04-23. The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope offshore from Maria Island. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 26 files totaling 1.23 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are not yet available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E02, which departed Hobart 2015-04-07 and returned on 2015-04-14. The Kongsberg EM7122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the south coast area within the Huon MPA. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 133 files totaling 3.49 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E02, which departed Hobart 2015-04-07 and returned on 2015-04-14. The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the south coast within the Huon MPA. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 39 files totaling 3.3 GB of raw data in this dataset. The acquisition PC failed mid voyage and no data was acquired within the seamounts region within the MPA. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E05, which departed Hobart 2015-05-01 and returned on 2015-05-05. The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information along the east coast slope offshore from Freycinet Peninsula. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 48 files totaling 3.9 GB of raw data in this dataset. Sound velocity profiles using sea surface temperature were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Due to the shallow nature of the inshore site and the duration of this survey over several tides, tide corrections will need to be applied from AusTides or from the data from the Triabunna tidal station. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator Event voyage IN2014_E04 which departed Hobart on the 26 Nov 2014 and returning to Hobart on the 28 Nov 2014. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information East of Hobart. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 24 files totalling 0.86 GB of raw data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2014_E03 which departed Hobart on the 11 Nov 2015, and returned to Hobart on 17 Nov 2015. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information from the East Coast of Tasmania. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 127 files totalling 5.37 GB of raw data in this dataset. A total of 34 sound velocity profiles were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E01, which departed Hobart on the 29 Jan 2015 and returned to Hobart on the 19 Feb 2015, after successfully testing equipment at 65° south. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information in from Hobart to Antarctic waters. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 389 files totalling 11.4 GB of raw data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Tide corrections were not applied to the processed data. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2015_E06, which consisted of three legs, 5-8 Oct 2015, 9-11 Oct 2015 and 12-16 Oct 2015, in and out of Hobart. The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information out to deep water 42-43 S. Ping rate varied according to depth. Data are stored in *.all raw format at CSIRO Oceans and Atmosphere. There are 47 files totaling 1.24 GB of raw data in this dataset. 24 sound velocity profiles were applied to this data during data acquisition. Processed data are available in XYZ and GSF format. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products available on request.