Descriptor: AIS Signal and Channel Dataset from Tórshavn Harbour and Surrounding Islands (Faroe Islands) (AIS-TSH)

This dataset provides Automatic Identification System (AIS) messages and per‑message radio‑frequency metadata captured in Tórshavn Harbour and the surrounding islands (Faroe Islands) over 76 days in 2025. The corpus contains 7.8 million messages from 547 vessels, with detections observed out to approximately 101~NM. Each record combines decoded AIS payloads with radio-frequency features received signal power (dBFS) and frequency offset in parts-per-million (PPM) enabling physical-layer characterisation, demodulation benchmarking, vessel analytics, and spoofing/interference studies. Signals were received using an RTL‑SDR and a vertically‑polarised VHF antenna with fixed 20 dB gain (AGC off); decoding used AIS‑catcher (v0.61). Fixed gain ensures temporal consistency of signal power, while the PPM field provides a coarse indicator of oscillator drift and Doppler. The data are released as newline‑delimited JSON in a single file (aisdata.csv) with a public DOI. This resource supports research across RF propagation and maritime data science, and facilitates reproducible benchmarking under real‑world North Atlantic conditions.