WATER TRANSPORTATION 533 
OCEAN SHIPPING 
SUMMARY.—The tonnage of the American merchant marine declined in 1925 
compared with 1924, but nevertheless was two and one-fourth times as great 
as before the war, The loss appeared only in the tonnage engaged in foreign 
‘rade, which was still about nine times as great as the 1910-1914 average. 
The idle steam shipping in world ports decreased slightly from 5,891,000 
gross tons on January 1, 1925, to 5,845,000 gross tons on January 1, 1926, the 
United States accounting for a little over 70 per cent of the total idie on the 
latter date. A decline occurred in the amount of tonnage under construction 
in the world as a whole, the total for 1925 being 2,070,000 gross tons compared 
with 2,470,000 in 1924. The United States, however, with 105.000 tons under 
construction showed a gain of 47,000 tons. } 
Entrances at United States ports of vessels engaged in foreign trade totaled 
89,378,000 net tons, a record figure, more than 1,000,000 tons greater than in 
1924, and 49 per cent over the 1910-1914 average. Of these, 73 per cent (ton= 
nage) carried cargo, compared with 71 per cent in 1924. American vessels 
represented 40.3 per cent of the total entrances as against 43.4 per cent in 1924. 
Clearances from United States Ports aggregated 1,318,000 tons more than in 1924. 
Vessels with cargo represented 771% per cent of the total, practically the same 
proportion as in 1924. The weight of cargo exported was somewhat less but 
hat of cargo imported somewhat greater in 1925 than in 1924, 
Table 22. —Summary of Major Statistics of Shipping 
[Thousands of tons] 
(tem 
American merchant marine: 
Total gross A On 
Tonnage in foreign trade......... 
Entrances, in foreign trade: 
Total net toNNAEe. eve eeecon.. 
With cargo. coco ocrummuuno.. 
Clearances, in foreign trade; 
Total net tONNAZE. mm eeeeoeennn.. 
With Cargo. owe eeenoen.. 
Panama Canal, total cargo tonnage. 
910- 
1914 - 
Aver | 
gel © 1021 | 1999 
Calendar years, except as noted 
won | vm 1 ams 
7,735 118,282 | 18,463 
031 1 11.077 1 10700 
18,285 I 17,741 
v9. 0689 | 18 704 
' 17,406 
18 151 
16, 619 
1) BGT 
62, 285 
11, 738 
85, 101 
40 307 
66,319 
48 GRA 
68, 202 
iR 738 
69, 378 
50, 773 
70,228 
54, 555 
23, 701 
16, 579 
10, 404 
4 087 
62, 665 
48, 677 
10. 767 
64, 839 
48,478 
13. 711 . 
66, 624 
51, 912 
25 1681 
88, 910 
53, 720 | 
5 RQ9 
Per cent change 
1010-1014 1924 to 
to 1925 | 10925 
125.0 | © ~L9 
775.5 -7.3 
48.8 18 
55.8 © 4,2 
50.8 19 
35,0 1.6 
2377.2 —-8.5 
1 As of June 30 or for years ended June 30. 
! Calendar year 1915 only, 
' Per cent increass over 181A. 
Tonnage of World’s Merchant Marine. 
The world’s merchant marine, as measured in terms of steel steam 
and motor vessels (not counting Great Lakes tonnage in America 
and tonnage of Canadian lakes) was 58.785.000 tons on June 30, 1925. 
1 General note as to units of measurement. — Cargo tonnage’ represents weight of cargo actually loaded, 
unloaded, or carried in either long tons (2,240 Pounds) or short tons (2,000 pounds) as specified. All other 
sonnage figures refer to capacity of vessels, The terms gross and net tonnage refer to space measurement, 
100 cubic feet being called 1 ton. Gross tonnage is the capacity of the entire space within the frames and the 
ceiling of the hull, together with those closed-in spaces above deck available for cargo, storage, passengers or 
crew, With certain minor exemptions. Net or registered tonnage is what remains aiter dedueting from the 
gross tonnage the spaces occupied by the propelling machinery (including allowance for fuel), crew quarters, 
naster’s cabin, and navigation spaces. It represents substantially space available for cargo and passengers, 
I'he net tonnage capacity of a ship recorded as “‘entered with cargo” may bear little relation to the actual 
weight of the caren.