AIS – MarineTraffic - Ship Tracking Review

Very handy if you are near to a port. There are many dead spots in remote areas. Generally the AIS class A data is good and compares well to the shipboard display. AIS class B data is often missing and it frequently lags real time. Some target data is 10-20 hours old. It is fun to watch ships but it cannot be relied upon.
Review by Trawler Tom on MarineTraffic - Ship Tracking.