1106S HERAS North sea herring acoustic survey-Scotia cruise 1106S dataset https://portal.medin.org.uk/portal/start.php?tpc=012_Marine_Scotland_FishDAC_1728 Daily folders (20) of Simrad format (.raw) acoustic data. 20 daily folders of acoustic data (.ek5 format) from autonomous echo-sounder. Data from Holographic camera system held by AU.20 Echoview format (EV) format analysis files. Excel biological data for 40 pelagic hauls. CTD data for 48 oblique deployments. Excel data for 48 plankton dips. Continual AGDS data. Objectives 1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and north of Scotland between 58º15-61.45’N and 4ºW to 2ºE, excluding Faroese waters. 2. To obtain biological samples for echosounder trace identification using a pelagic trawl. 3. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity, ichthyophonus infection and fat content. 4. To obtain hydrographic data for comparison with the horizontal and vertical distribution of herring. 5. To obtain plankton samples map the distribution and abundance of zooplankton. 6. To test the multisampling pelagic cod-end. 7. To test FRS’ new Methot Isaacs Kidd nets. 8. To obtain holographic images of the low frequency scattering layer. 20160407