Multibeam data from the "OS2020 New Zealand American Sentry mineralization Survey (NZASMS 2011)" voyage by the R/V Tangaroa. The primary mission of this voyage is to "Characterize the seafloor hydrothermal systems of select volcanoes along the Kermadec arc for their mineralization potential using the AUV Sentry" In addtion, other aspects that are covered include: regional geophysical signatures of the volcanoes and their hydrothermal systems, plume studies, habitiat research of vent-related animals, and collections of representative animals, rocks and minerals. Survey Leader: Cornel de Ronde Organisations: GNS,NIWA Bathymetric Instrument: Kongsberg EM302 multibeam Navigation Instrument: Seastar 9200 DGPS Ports: Auckland to Auckland