Table 1,,,,
"U.S.-Flag Vessels: Available vs. Operating, ",,,,
by Vessel Type: 1999,,,,
,,,,Total
,Vessels,Vessels,Percent,operating
Vessel type,available,operating,operating,companies
Self-propelled,"8,379","4,747",57,"1,001"
Dry cargo (total),695,448,65,135
  Dry bulk,68,57,84,15
  Containership,74,49,66,3
  General cargo,320,186,58,92
  Specialized,233,156,67,41
Passenger,970,599,62,285
Offshore support,"1,470",719,49,120
Tanker,142,113,80,41
Towboat,"5,098","2,867",56,670
Nonself-propelled,"33,387","28,272",86,467
Dry cargo (total),"29,414","24,962",87,313
Tank barge (total),"3,973","3,310",84,200
NOTE: Totals are greater than the sum because of unclassified vessels.,,,,

"SOURCE: U.S. Army Corps of Engineers, Water Resources Support Center, Waterborne Transportation Lines of the United States, Calendar Year 1999, Volume 1–National Summaries (New Orleans, LA: Dec. 31, 2000).",,,,