The system was deployed during the NT12-27 cruise of the R/V Natsushima of the Japan Agency for Marine Science andTechnoogy (JAMSTEC) to the North Knoll of the Iheya Ridge, Okinawa Trough, Japan. The Iheya-North field is a kilometer scale active hydrothermal field [7], [8], that was drilled extensively during the IODP 331 Deep Hot Biosphere expedition during September and October 2010 [9]–[11].