CCS - Saildrone SD1008 2018 V1 bioacoustic data

The WBT Mini echosounders were installed by Saildrone in San Francisco in November 2017 on two platforms – SD1007, SD1008. CSIRO staff worked with Saildrone to ensure correct operation and develop low pass filters that significantly improved noise performance. The platforms were tested in-water in San Francisco bay. A rudimentary calibration was make by suspending a reference sphere of known reflectivity beneath the transducers. The calibration was not exhaustive as this was done in a high current situation in less than ideal depths but served to confirm that the echosounders were operating correctly. The commissioning calibration was followed up with a comprehensive calibration of the acoustic systems in Hobart on the 24th and 26th of March (section 2.3.1). Sea trials were conducted in December 2017 open waters adjacent to San Francisco (Section 3.1). On March 28th the Saildrones commenced an extended trail heading from Hobart along the eastern seaboard of mainland Australia. Data were recorded using the internal ‘autonomous mode’ logging module that