Year

U.S.-Flag Fleet as a % of the World Fleet by Tonnage

# of Ships

000 GT

# of Ships

000 GT

1914

24,444

45,404

1,692

4,287

9%

-------- World War I --------

1919

24,386

47,897

3,611

11,933

25%

1920

26,513

53,905

4,039

14,525

27%

1921

28,433

58,846

4,247

15,674

27%

1922

29,255

61,343

4,234

15,733

26%

1923

29,246

62,335

4,217

15,623

25%

1924

29,024

61,514

3,992

14,707

24%

1925

29,205

62,380

3,829

14,208

23%

1926

29,092

62,672

3,621

13,740

22%

1927

28,967

63,267

3,577

13,606

22%

1928

29,387

65,159

3,554

13,607

21%

1929

29,612

66,407

3,524

13,487

20%

1930

29,996

68,024

3,399

13,103

19%

1931

29,952

68,723

3,268

12,794

19%

1932

29,932

68,368

3,233

12,716

19%

1933

29,515

66,628

3,174

12,563

19%

1934

28,964

64,358

3,109

12,303

19%

1935

29,071

63,727

3,069

12,145

19%

1936

29,197

64,005

3,021

11,905

19%

1937

29,524

65,271

2,946

11,788

18%

1938

20,409

66,870

2,857

11,404

17%

1939

29,763

68,509

2,853

11,362

17%

-------- World War II --------

1948

29,340

80,292

5,225

29,165

36%

1949

30,284

82,571

5,026

27,814

34%

1950

30,852

84,583

4,953

27,514

33%

1951

31,226

87,245

4,909

27,331

31%

1952

31,461

90,180

4,876

27,245

30%

1953

31,797

93,352

4,800

27,237

29%

1954

32,358

97,422

4,756

27,344

28%

1955

32,492

100,569

4,537

26,423

26%

1956

33,052

105,200

4,432

26,146

25%

1957

33,804

110,246

4,374

25,911

24%

1958

35,202

118,034

4,301

25,590

22%

1959

36,221

124,935

4,196

25,288

20%

1960

36,311

129,769

4,059

24,837

19%

1961

37,792

135,916

3,936

24,238

18%

1962

38,661

139,980

3,749

23,273

17%

1963

39,571

145,863

3,706

23,133

16%

1964

40,859

153,000

3,537

22,430

15%

1965

41,865

160,392

3,416

21,527

13%

1966

43,014

171,130

3,332

20,797

12%

1967

44,375

182,100

3,303

20,333

11%

1968

47,444

194,152

3,232

19,668

10%

1969

50,276

211,661

3,146

19,550

9%

1970

52,444

227,490

2,983

18,463

8%

1971

55,041

247,203

3,327

16,266

7%

1972

57,391

268,340

3,687

15,024

6%

1973

59,606

289,927

4,063

14,912

5%

1974

61,194

311,323

4,086

14,429

5%

1975

63,724

342,162

4,346

14,587

4%

1976

65,887

372,000

4,616

14,908

4%

1977

67,945

393,678

4,740

15,300

4%

1978

69,020

406,002

4,746

16,188

4%

1979

71,129

413,021

5,088

17,542

4%

1980

73,882

419,991

5,579

18,464

4%

1981

73,864

420,835

5,869

18,908

4%

1982

75,151

424,742

6,133

19,111

4%

1983

76,106

422,590

6,437

19,358

5%

1984

76,068

418,682

6,441

19,292

5%

1985

76,395

416,269

6,447

19,518

5%

1986

75,266

404,910

6,496

19,901

5%

1987

75,240

403,498

6,427

20,178

5%

1988

75,680

404,406

6,442

20,832

5%

1989

76,100

410,481

6,375

20,588

5%

1990

78,336

423,627

6,348

21,328

5%

1991

80,030

436,027

6,222

20,291

5%

1992

79,845

444,305

5,737

18,228

4%

1993

80,655

457,915

5,646

14,097

3%

1994

80,676

475,859

5,270

13,655

3%

1995

82,890

490,662

5,292

12,761

3%

1996

84,264

507,873

5,289

12,025

2%

1997

85,494

522,197

5,260

11,789

2%

1998

85,258

531,893

5,626

11,852

2%

1999

86,817

543,610

5,642

12,026

2%

2000

87,546

553,054

5,792

11,111

2%

2001

87,939

574,551

5,824

10,907

2%

2002

89,010

585,583

6,039

10,293

2%

2003

89,899

605,218

6,144

10,330

2%

2004

89,960

633,321

6,414

10,744

2%

2005

2%

2006

2%

2007

2%