Uncorrected inertial navigation dataset collected on board the R/V Akademik Tryoshnikov during the austral summer of 2016/2017 as part of the Antarctic Circumnavigation Expedition (ACE). Data files: ace_hydrins_YYYYMMDD.csv File header: pc_date_utc: date on PC operating software in the format YYYY-MM-DD [UTC] pc_time_hhmmssss: Time on PC operating software in the format HH:MM:SS.FFF [UTC] hydrins_time_hhmmssss: Time on Hydrins software in the format HH:MM:SS.FFF [UTC] heading: Heading of vessel [degree] platform_roll: Degrees of roll of vessel [degree] platform_pitch: Degrees of pitch of vessel [degree] heading_std_dev: Standard deviation of heading of vessel [degree] platform_roll_std_dev: Standard deviation of roll of vessel [degree] platform_pitch_std_dev: Standard deviation of pitch of vessel [degree] north_speed_ms-1: Speed of the vessel in the northerly direction [ms-1] east_speed_ms-1: Speed of the vessel in the easterly direction [ms-1] vertical_speed_ms-1: Vertical speed of the vessel [ms-1] spped_norm_knots: unknown [knots] north_speed_std_dev_ms-1: Standard deviation of the speed of the vessel in the northerly direction [ms-1] east_speed_std_dev_ms-1: Standard deviation of the speed of the vessel in the easterly direction [ms-1] vertical_speed_std_dev_ms-1: Standard deviation of the vertical speed of the vessel [ms-1] latitude: Latitude of the instrument [degree north] longitude: Longitude of the instrument [degree east] altitude_m: Height of the instrument above sea level [metre] latitude_std_dev_m: Standard deviation of latitude of instrument [metre] longitude_std_dev_m: Standard deviation of longitude of instrument [metre] altitude_std_dev_m: Standard deviation of altitude of instrument [metre] zone_i: unknown zone_c: unknown utm_north_m: Northerly position of instrument in UTM [metre] utm_east_m: Easterly position of instrument in UTM [metre] utm_altitude_m: Altitude of instrument in UTM [metre] high_level_status: unknown system_status_1: Status of system system_status_2: Status of system algo_status_1: Algorithm status algo_status_2: Algorithm status gps_latitude_degrees: Latitude recorded by the GPS [degree north] gps_longitude_degrees: Longitude recorded by the GPS [degree east] gps_altitude_m: Altitude of the GPS above sea level as measured by the GPS [metre] gps_mode: Mode of operation of GPS [fixed, differential, fixed RTK, float RTK] gps_time: Time from GPS in the format HH:MM:SS.FFF [UTC] manual_gps_latitude: Unsure of source; latitude [degree north] manual_gps_longitude: Unsure of source; longitude [degree east] manual_gps_altitude_m: Unsure of source; altitude [metre] manual_gps_latitude_std_dev: Unsure of source; standard deviation of latitude [degree north] manual_gps_longitude_std_dev: Unsure of source; standard deviation of longitude [degree east] manual_gps_altitude_std_dev_m: Unsure of source; standard deviation of altitude [metre] unknown1: Unknown field unknown2: Unknown field unknown3: Unknown field