Large Automatic Navigational Buoy

bullet A very large light-buoy.
bullet Used as an alternative to a light-vessel
bullet Used to mark offshore positions important to the mariner.
bullet Lanbys vary in size up to a displacement of 140 tonnes and a diameter or height of 12 m.
bullet Radiobeacons, racons or radar reflectors may be fitted to them.
bullet Full details of lanbys are given in Admiralty List of Lights.