AIS positions are typically accurate within a few meters. Updates happen every 2–10 seconds for moving vessels. Ships in open ocean may have less frequent updates due to satellite AIS coverage gaps.
PORTLAND is a Tug registered under the US flag. Built in 1981. The vessel has a gross tonnage of 271 GT and a deadweight of 1 DWT. Length overall: 32 m, beam: 10 m.
The vessel's IMO number is 8118035 — a permanent identifier assigned for the lifetime of the ship. The MMSI number 367513190 is used for real-time AIS radio identification.
Use the live map above to track the current position of PORTLAND 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.