TABLE 93 Age of U.S. Flag Vessels by Type: 2000,,,,,, ,,,,,, Ship type (number of vessels),Age range (years),,,,, ,< 6,6–10,11–15,16–20,21–25,> 25 Dry cargo (733),66,50,113,136,105,263 Tanker (135),11,4,8,34,30,48 "Towboat (4,990)",325,143,142,929,954,"2,497" Passenger (915),134,118,178,124,90,271 "Support (1,420)",246,106,58,454,332,214 "Dry barge (29,009)","6,721","3,051","1,565","5,846","5,365","6,461" "Liquid barge (3,987)",582,329,48,602,712,"1,714" "Total (41,182)","8,085","3,802","2,112","8,125","7,588","11,470" " NOTES: Support includes offshore support and crewboats. Liquid barge includes tank barges. ",,,,,, "SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics (BTS), National Transportation Statistics 2002 (Washington, DC: 2002), table 1-31, also available at http://www.bts.gov/, as of April 2003. ",,,,,,