Vessel traffic service
![From the combined VTS and pilots scheduling center in Horten, Norway](/Images/godic/202502/19/VTS_and_pilotage_Horten_Norway_20061117.jpg")
![VTS Nijmegen, monitoring the river Waal](/Images/godic/202502/19/VTS_Waalbochten1117.JPG")
![Operator Working Position from Helsinki, Finland, VTS covering the area from Emäsalo to Ingå. The image shows a typical state-of-the-art integrated operator working position.](/Images/godic/202502/19/VTS-Hki-emasalo-ows1117.jpg")
![Sign telling mariners to contact the Port of London VTS as they enter the Thames Barrier control zone](/Images/godic/202502/19/VH14_sign1117.jpg")
A vessel traffic service (VTS) is a marine traffic monitoring system established by harbour or port authorities, similar to air traffic control for aircraft. Typical VTS systems use radar, closed-circuit television (CCTV), VHF radiotelephony and automatic identification system to keep track of vessel movements and provide navigational safety in a limited geographical area.