TABLE VII.-Summary of U.S.-flag passenger and cargo vessels operating or available for operation on Dec. 31, 1958 (exclusive of fishing and excursion vessels and general ferries)

1 Does not include horsepower and cargo capacity for vessel United States.

Source: Statistical Division, Board of Engineers for Rivers and Harbors, Corps of Engineers, U.S. Army,

July 14, 1960.

TABLE VIII.-Recreational boats in existence on all waters in the United States, 1959

Type of boat:

Motorboats (including all inboard boats, outboards over 16 feet and approximately 44,500 auxiliary-powered sailboats) numbered by the U.S. Coast Guard for use on navigable waters_-_ Unnumbered inboard motorboats in use on waters not under Federal jurisdiction..

Larger inboard cruisers and auxiliary-powered sailboats docu-
mented by the U.S. Bureau of Customs.

Outboard boats in use. These are boats with transoms designed
to accommodate outboard motors____
Sailboats without inboard power on all waters..
Rowboats, canoes, dinghies, prams, and other miscellaneous craft
in use.
(A number of these are sometimes used with outboard
power)

Total...

Number

541, 000

319, 000

4,000

3,940, 000 496, 000

2,500,000

7, 800, 000

TABLE IX.-Number of aircraft in operation March 30, 1959 (not including military aircraft or fixed wing aircraft weighing less than 12,500 pounds) 1

There are over 70,000 aircraft used in general aviation, which embraced all civil flying except that of the scheduled airlines.

0.8

1928.

3.6

3.6

1929.

5.5

0.2

8.0

13.7

1930.

6.7

.3

10.0

17.0

1931.

9.1

.8

11.1

21.0

1932.

9.8

1.4

18. 1

29.3

1933.

6.9

0.1

1.7

17.0

25.7

1934.

4.9

.4

1.5

10.0

16.8

1935.

5.6

2.0

1.3

6.0

14.9

1936.

5.3

.5

1.2

7.0

14.0

1937.

6.2

1.5

7.0

14.7

1938.

11.7

3

2.2

0.1

7.0

21.2

1939

13.6

0.4

1.5

.7

2.5

12.4

31.2

1940.

17.5

2.4

4.2

3.5

13.9

42. 1

1941.

19.6

2.3

76.6

3.5

13.9

116.6

1942

30.4

3.0

.1

3.8

14.0

52.2

1943.

34.0

2.6

2.0

4.2

1.4

5.1

50.2

1944.

32.8

3.0

4.4

1.1

2.2

44.3

1945.

31.1

3.8

29.7

5.5

1.7

4.1

76.6

1946

45.2

7

4.7

6.0

1.4

7.3

65.7

1947.

78.0

1. 1

10.4

2.6

5.

8.1

2.5

15.2

123.1

1948_

77.7

1.6

10.4

28.8

.6

8.2

33.0

162.7

1949_

92.8

1.9

13.2

50.6

.7

8.8

2.5

41.4

211.9

1950..

107.9

8.4

12.7

46.6

1.1

9.3

2.5

45.0

233.5

1951

105.0

3.9

12.9

50.9

1.0

9.4

2.7

38.2

224.0

1952

92.0

3.1

13.0

24.3

1.8

10.4

31.5

179.1

1953.

102.9

2.9

12.9

16.4

.8

10.9

34. 1

183.7

1954

94.7

1.1

13.8

1.9

2.2

10.7

2.9

38.4

165.7

1955

99.1

1.0

13.0

19.8

2.1

10.2

2.5

35. 1

182.8

1956..

106.3

1.0

13.8

17.8

2.7

14.6

2.6

35.6

196.4

1957.

193.6

1.5

14.9

45.1

3.3

12.0

1.8

40.5

312.7

1958.

284. 1

17.0

18.8

70.3

4.0

12.3

2.1

46.8

455. 4

1959.

322.1

33.3

28.6

73.0

4.5

14.2

2.4

51.8

529.9

1960.

403.7

5.5.0

35.9

75.0

4.9

17.5

2.8

63.0

657.8

1961.

520.3

70.3

47.0

63.0

5.4

27.9

3.8

68.0

805.7