AIS Shipping Information

	Click on vessel to show details
Passenger Vessels	Cargo Vessels	Tankers	High Speed Craft	Tug, Pilot, etc
Yachts & Others	Navigation Aids	Unspecified Ships	Ships Underway	Anchored/Moored
This display utilises the AIS system which ships use to communicate their positions as part of the global maritime safety system. From December 2004, all ships over 300 tons must carry an AIS system which broadcasts information about the ship to any suitably equipped receiver. AIS uses very short bursts of high speed data on two VHF channels in the marine band. Ships broadcast their identity, position, course, speed and destination so that other ships can take account of their movements.