https://doi.pangaea.de/10.1594/PANGAEA.997831Seidel, MarcMarcSeidelGEOMAR - Helmholtz Centre for Ocean Research KielPANGAEA20261 sec resolutionUnderway cruise track measurementsAL623aAlkor (1990)DAM Underway Research Data (DAM_Underway)DataHub Earth and Environment of the Helmholtz Association (DataHub)GEOMAR - Helmholtz Centre for Ocean Research Kielhttps://ror.org/02h2x01612024-11-09T06:00:00/2024-11-11T17:59:59Datasethttps://doi.pangaea.de/10.1594/PANGAEA.9978309.1 MBytesapplication/zipCreative Commons Attribution 4.0 InternationalRaw data acquired by position sensors on board RV Alkor during expedition AL623a were processed to receive a validated master track which can be used as reference of further expedition data. During AL623a data from the motion reference unit Kongsberg MRU-Z, the Trimble MPS865 GPS receiver, the Furuno GP-170 and Furuno GP-150 GPS receivers and from the NAVIGAT X MK 1 gyro compass were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (http://dship.bsh.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.Corrected version of the dataset from 2026-10-1310.17877210.17881154.328634754.3286562Bundesministerium für Bildung und Forschunghttps://doi.org/10.13039/50110000234703F0935EUnterwegsdaten-2; Vorhaben: Aufbereitung und Kuration von Bathymetrie-, Unterwegs- und Forschungsmissionsdaten, Mitarbeit DAM-Portal