Labelled AIS Trajectories Near Svalbard for Abnormal Behavior Detection

This dataset aims to provide researchers with annotated maritime trajectories to evaluate and compare models for abnormal behavior detection. The lack of annotated datasets for such purposes has made it challenging to quantitatively assess model performance. By providing manually labeled trajectories that showcase abnormal behavior, this dataset addresses this gap.The dataset focuses on the Region of Interest (ROI) in the remote Arctic sea around the archipelago of Svalbard. In January 2022, a submarine cable breach event occurred in this area. During the incident, two ships, MELKART-5 and YAGRY, sailed over the cable multiple times and are considered anomalous. Eleven routes for MELKART-5 are labeled as anomalous, while five are labeled for YAGRY. Additionally, there are 35,055 trajectories with 372 unique vessels.The data contains the trajectories and ship type information, saved in both pickle and JSON formats to avoid compatibility issues with different Python and pickle versions. The files are named as follows:formatted_trajectories.pklformatted_trajectories.jsonThe data is a dictionary with MMSI_Traj_i as the key, and for each key, it contains another dictionary which includes the trajectory and other information:mmsi: the MMSI of the shiptrack_length: the total number of data pointslat: the latitudelon: the longitudespeed: the speed over ground (SOG) given in knotscourse: the course over ground (COG) given in degreestimestamp: the timestamp in UTC for each data point givenanomaly_label: if the given trajectory is anomalous or notEach trajectory has been resampled with linear interpolation to a two-minute frequency. Furthermore, each trajectory is more than 10 minutes and less than 12 hours.Additionally, an extra JSON file is provided, which is a dataframe with MMSI and ship type:df_ships.jsonThe AIS data in the Svalbard ROI was accessed through an API from the Norwegian Kystdatahuset.Versioning:V2: Data sheet now includes reference to article DOI: 10.1016/j.oceaneng.2025.122656.V3: Added all author names to datasheet (previously only the first author was listed).