TABLE 1–31:  U.S. Flag Vessels by Type and Age (Number of vessels),,,,,,,,,
Agea,Vessel type,,,,,,,,
,Dry cargo,Tanker,Towboat,Passengerc,Offshore support / crewboatsd,Dry barge,Tank / liquid bargee,Totalb,
"1990–91, totalb",900,257,"5,210",721,"1,168","27,110","3,874","39,342",
<6,80,6,132,151,85,"2,335",162,"2,951",
6–10,161,38,706,120,318,"4,570",316,"6,229",
11–15,212,50,"1,029",110,474,"7,639",829,"10,343",
16–20,141,35,844,80,144,"6,374",750,"8,368",
21–25,82,38,750,65,84,"2,607",759,"4,385",
>25,196,86,"1,718",188,51,"3,372","1,049","6,660",
"1992, totalb",497,249,"5,203","1,201","1,205","26,981","3,864","39,313",
<6,36,5,134,219,93,"3,224",296,"4,012",
6–10,73,28,398,198,208,"1,783",121,"2,829",
11–15,135,54,"1,137",203,567,"9,114",902,"12,150",
16–20,73,33,926,169,189,"6,696",740,"8,853",
21–25,31,42,716,122,91,"2,475",677,"4,167",
>25,124,82,"1,874",287,53,"3,496","1,123","7,049"
"1993, totalb",470,205,"5,219","1,243","1,197","26,982","3,970","39,306"
<6,25,3,135,207,103,"3,558",325,"4,356"
6–10,67,22,205,221,107,"1,070",68,"1,764"
11–15,135,43,"1,221",211,597,"8,810",869,"11,894"
16–20,70,33,968,164,218,"6,772",791,"9,019"
21–25,41,31,674,129,106,"2,904",655,"4,543"
>25,128,73,"2,008",311,64,"3,713","1,256","7,555"
"1994, totalb",778,202,"5,179",928,"1,236","26,757","3,966","39,064"
<6,46,4,146,157,107,"3,630",399,"4,489"
6–10,103,12,151,185,61,"1,171",36,"1,719"
11–15,200,36,"1,135",123,540,"7,903",754,"10,691"
16–20,130,44,966,122,309,"6,314",799,"8,684"
21–25,90,32,664,82,130,"3,873",638,"5,509"
>25,206,74,"2,107",259,86,"3,706","1,327","7,765"
"1995, totalb",726,178,"5,127",954,"1,288","27,375","3,985","39,641"
<6,38,5,168,149,119,"3,975",489,"4,943",,,
6–10,90,8,134,195,58,"1,483",46,"2,014",,,
11–15,168,34,959,133,463,"6,387",611,"8,760",,,
16–20,135,38,988,121,412,"6,507",736,"8,939",,,
21–25,80,29,726,91,141,"4,897",697,"6,661",,,
>25,213,64,"2,146",263,92,"3,966","1,403","8,148",,,
"1996, totalb",713,161,"5,177",967,"1,274","28,775","4,036","41,104",,,
<6,43,7,205,153,123,"5,189",573,"6,293",,,
6–10,74,8,118,188,61,"2,041",87,"2,577",,,
11–15,141,29,715,142,351,"4,505",346,"6,229",,,
16–20,155,36,"1,036",119,460,"7,234",840,"9,881",,,
21–25,79,23,842,87,155,"5,416",723,"7,325",,,
>25,229,62,"2,386",290,144,"4,766","1,576","9,453",,,
"1997, totalb",692,147,"5,173","1,025","1,369","29,040","3,971","41,419",,,
<6,52,8,227,150,122,"5,515",519,"6,593",,,
6–10,66,2,118,187,94,"2,582",181,"3,230",,,
11–15,96,27,396,152,223,"1,800",137,"2,831",,,
16–20,183,36,"1,173",131,588,"8,943",928,"11,982",,,
21–25,84,21,918,102,177,"5,772",727,"7,801",,,
>25,209,53,"2,332",302,159,"4,284","1,477","8,816",,,
"1998, totalb",714,135,"5,237","1,011","1,423","29,557","3,952","42,032",,,
<6,56,12,247,150,163,"5,877",485,"6,991",,,
6–10,55,3,124,168,105,"3,117",267,"3,839",,,
11–15,105,19,196,166,111,"1,113",72,"1,782",,,
16–20,179,31,"1,198",129,634,"8,591",865,"11,626",,,
21–25,88,22,979,106,211,"5,909",763,"8,076",,,
>25,230,48,"2,487",292,195,"4,817","1,499","9,573",,,
"1999, totalb",695,142,"5,098",970,"1,470","29,414","3,973","41,766",,,
<6,60,12,302,144,245,"6,640",565,"7,968",,,
6–10,49,3,140,146,114,"3,192",298,"3,943",,,
11–15,97,12,146,183,61,"1,231",39,"1,769",,,
16–20,146,35,"1,101",120,571,"7,414",742,"10,129",,,
21–25,99,30,953,95,283,"5,302",760,"7,522",,,
>25,243,50,"2,447",282,191,"5,491","1,560","10,267",,,
"2000, totalb",737,135,"4,995",918,"1,414","29,141","4,011","41,354",,,
<6,66,11,325,134,246,"6,721",582,"8,085",,,
6–10,50,4,143,118,106,"3,051",329,"3,802",,,
11–15,113,8,142,178,58,"1,565",48,"2,112",,,
16–20,136,34,929,124,454,"5,846",602,"8,125",,,
21–25,105,30,954,90,332,"5,365",712,"7,588",,,
>25,263,48,"2,497",271,214,"6,461","1,714","11,470",,,
a  Age is based on the year the vessel was built or rebuilt.,,,,,,,,,,,
b Totals may be greater than sum of columns because of unclassified vessels and vessels of unknown age; figures include vessels available for operation.,,,,,,,,,,,
"c  Includes passenger excursion/sightseeing, combination passenger and dry-cargo vessels, and ferries.",,,,,,,,,,,
"d  In 1992, offshore supply boats were designated as crewboats.",,,,,,,,,,,
"e  In 1992, tank barges were designated as liquid barges.",,,,,,,,,,,
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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 in 2000 and similar tables in previous years; also available on Internet site www.wrsc.usace.army.mil/ndc/ as of June 25, 2002.",,,,,,,,,
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