Automatic light vessel
A light vessel that fulfills all its required functions without the need to carry a crew. The regular operation of the light and all other aids to navigation and essential equipment on the vessel is automatic. A radio link is provided to a shore station for the remote monitoring of important functions, and possibly also for some remote control.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM