https://doi.pangaea.de/10.1594/PANGAEA.993753Dahlke, FlemmingFlemmingDahlke0000-0003-0095-2362University of HamburgPANGAEA20261 sec resolutionUnderway cruise track measurementsAL647Alkor (1990)DAM Underway Research Data (DAM_Underway)DataHub Earth and Environment of the Helmholtz Association (DataHub)University of Hamburghttps://ror.org/00g30e9562026-03-04T04:56:57/2026-03-12T18:31:25Datasethttps://doi.pangaea.de/10.1594/PANGAEA.99375231.2 MBytesapplication/zipCreative Commons Attribution 4.0 InternationalRaw data acquired by position sensors on board RV Alkor during expedition AL647 were processed to receive a validated master track which can be used as reference of further expedition data. During AL647 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.10.179463254.32851935