AIS positions are typically accurate within a few meters. Updates happen every 2β10 seconds for moving vessels. Ships in open ocean may have less frequent updates due to satellite AIS coverage gaps.
JOHN MARSHALL is a Tug registered under the US flag. Built in 1972. The vessel has a gross tonnage of 199 GT. Length overall: 35 m, beam: 10 m.
The vessel's IMO number is 7223261 β a permanent identifier assigned for the lifetime of the ship. The MMSI number 366946820 is used for real-time AIS radio identification.
Use the live map above to track the current position of JOHN MARSHALL on an interactive AIS chart, including speed, heading, destination and estimated time of arrival (ETA). To browse more Tug ships under the US flag, use the links above.