https://doi.pangaea.de/10.1594/PANGAEA.998269Badewien, Thomas HenryThomas HenryBadewien0000-0003-0692-7731Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität OldenburgPANGAEA20261 sec resolutionUnderway cruise track measurementsHE691HeinckeAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhavenhttps://ror.org/032e6b9422026-09-10T07:59:42/2026-09-23T21:25:30Datasethttps://doi.pangaea.de/10.1594/PANGAEA.99827049.2 MBytesapplication/zipCreative Commons Attribution 4.0 InternationalRaw data acquired by position sensors on board RV Heincke during expedition HE691were processed to receive a validated master track which can be used as reference of further expedition data. During HE691 the inertial navigation system IXSEA PHINS III and the GPS receivers Trimble Marine SPS461 and SAAB R5 SUPREME NAV were used as navigation sensors. Data were downloaded from Insightics Marine DSHIP Extraction (https://dship.o2a-data.de/) with a resolution of 1 sec. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track.8.58101153.533253