Ocean observations included sea temperature and salinity measurements at 3, 9, and 18 m. A bottom-mounted, upward-looking ADCP provides surface wave measurements and currents at multiple depths during some periods when the N7 was operational.

Variables Instrument Depth (m) Units
Temperature/Salinity/Conductivity Seabird 16 3, 9 °C/PSU/(S/m)
Temperature/Salinity/Conductivity/Dissolved Oxygen Seabird 16plus 18 °C/PSU/(S/m)/(mg/L)
Wave height/Period/Current meter Nortek AWAC 18 meters/seconds/(cm/s)