https://doi.pangaea.de/10.1594/PANGAEA.993756Funk, SteffenSteffenFunkInstitute of Marine Ecosystem and Fishery Science, University of HamburgPANGAEA2026DATE/TIMELATITUDELONGITUDESpeedCourseUnderway cruise track measurementsCalculatedAL645Alkor (1990)DAM Underway Research Data (DAM_Underway)DataHub Earth and Environment of the Helmholtz Association (DataHub)Institute of Marine Ecosystem and Fishery Science, University of Hamburghttps://ror.org/00g30e9562026-01-27T05:16:55/2026-02-01T17:26:54Datasethttps://doi.pangaea.de/10.1594/PANGAEA.993757https://www.pangaea.de/expeditions/events/AL6451586 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalRaw data acquired by position sensors on board RV Alkor during expedition AL645 were processed to receive a validated master track which can be used as reference of further expedition data. During AL645 data from the Seapath 330 system, the Furuno GP-170 receiver and the SAAB R6 system were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://dship.o2a-data.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. 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.This dataset contains the master track in 10 min resolution, for other resolutions please see "Other version" references.10.02069411.83903654.12644455.018802