Z-FOUR is a tug built in 1999 and flying the flag of the United States; it is in its 27th year of service. The vessel has a gross tonnage of 256. Z-FOUR has been classed since 1 October 2010 by the American Bureau of Shipping, a member of the International Association of Classification Societies (IACS). Its last class renewal survey was on 10 February 2014. The vessel has been observed most often in the west coast of North America (latest area report: June 2026). It has previously sailed under one other name and one other flag. No port state control (PSC) inspection records are on file for this vessel.
Z-FOUR is a tug built in 1999. It is in its 27th year of service.
Z-FOUR flies the flag of the United States. Earlier it sailed under one other flag.
Z-FOUR has been classed since 1 October 2010 by the American Bureau of Shipping, a member of the International Association of Classification Societies (IACS). Its last class renewal survey was on 10 February 2014.
No port state control (PSC) inspection records are on file for this vessel.
The vessel has been observed most often in the west coast of North America (latest area report: June 2026). It has previously sailed under one other name and one other flag.
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