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U.S. Flag Vessels by Type and Age

Dataset Excel: 
Notes: 

Figures include vessels available for operation.

Totals may be greater than sum because of unclassified vessels and vessels of unknown age.

Description: 

a Age is based on the year the vessel was built or rebuilt.

b In 1992, Offshore support boats were designated as crew boats.

c In 1992, Tank barges were designated as Liquid barges.

Source: 

U.S. Army Corps of Engineers, Waterborne Transportation Lines of the United States, Volume 1, National Summaries (New Orleans, LA: Annual Issues), table 4, available at http://www.navigationdatacenter.us/veslchar/pdf/ as of June 21, 2016.