TABLE E-7  U.S. Flag Vessels by Type and Age: 2004,,,,,,,,,,,,,,
"Number
",,,,,,,,,,,,,,
,Age group (years),,,,,,,,,,,,,
Vessel types ,< 6,6–10,11–15,16–20,21–25,> 25,,,,,,,,
Dry cargo,126,112,95,132,130,390,,,,,,,,
Tanker,11,10,3,8,31,40,,,,,,,,
Towboat,367,272,166,157,"1,083","3,262",,,,,,,,
Passenger,72,97,119,144,92,308,,,,,,,,
Offshore support/Crewboats  ,279,198,109,64,580,512,,,,,,,,
Dry barge,"4,556","4,840","3,057","1,169","6,240","7,152",,,,,,,,
Tank/Liquid Barge,676,453,296,35,639,"1,970",,,,,,,,
"
NOTES: Data includes vessels available for operation. Age is based on the year vessels were built or rebuilt.  Passenger includes passenger excursion/sightseeing, combination passenger and dry-cargo vessels, and ferries.",,,,,,,,,,,,,,
"
SOURCE: U.S. Army Corps of Engineers, Waterborne Transportation Lines of the United States, Volume 1, National Summaries (New Orleans, LA: annual issues).",,,,,,,,,,,,,,
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