The Panama Canal has implemented regulations to track vessels approaching and travelling in the Canal.
All ships over 300 tons or more than 20 m in lenght must be equipped with an Automatic Identification System (AIS) that complies with IMO.
This regulation is effective from 1 July 2003 well before the IMO date for vessels to carry AIS.
For vessels not fitted with AIS, the Panama Canal Authority will supply a portable AIS for a fee of US$150.