Industry acoustic surveys of spawning southern blue whiting on the Bounty Platform, New Zealand

Annual acoustic surveys of spawning southern blue whiting (Micromesistius australis) on the Bounty Platform, southeast of New Zealand, have been carried out using industry vessels since 2004. In most years, surveys were carried out from a single vessel, while in 2009, acoustic data were collected from three vessels. The survey approach in all years was the same—vessels with calibrated Simrad ES60/ES70 echosounders and hull-mounted 38 kHz...