Appendix F: Merchant Shipping
Appendix F-1: United Nations Merchant Shipping Dry Cargo Gains, Losses, and Construction: 1941–45 a
(In thousands of dead-weight tons)
| Tonnage of Dry Cargo Merchant Ships Available | |||||
| Period | Gains Through New Construction b | Losses c | Net Gain or Loss d | U.N. | U.S. |
| Total | 48,386 | 16,362 | 32,024 | - | - |
| December 1941 | 194 | 580 | -386 | - | - |
| January-March 1942 | 883 | 1,873 | -990 | - | - |
| April-June 1942 | 2,112 | 2,359 | -247 | - | - |
| July-September 1942 | 2,811 | 2,343 | +468 | - | - |
| October-December 1942 | 3,323 | 2,382 | +941 | - | - |
| January-March 1943 | 3,729 | 1,792 | +1,937 | d 36,975 | 15,460 |
| April-June 1943 | 5,021 | 984 | +4,037 | 40,905 | 19,232 |
| July-September 1943 | 4,589 | 898 | +3,691 | 44,563 | 22,271 |
| October-December 1943 | 4,553 | 668 | +3,885 | 48,381 | 25,194 |
| January-March 1944 | 3,508 | 649 | +2,859 | 51,058 | 27,199 |
| April-June 1944 | 3,861 | 436 | +3,425 | 54,669 | 29,534 |
| July-September 1944 | 3,119 | 391 | +2,728 | 56,778 | 31,502 |
| October-December 1944 | 3,557 | 328 | +3,229 | 59,602 | 34,029 |
| January-March 1945 | 3,037 | 447 | +2,590 | 63,943 | 36,169 |
| April-June 1945 | 2,613 | 197 | +2,416 | 66,227 | 38,066 |
| July-August 1945 | 1,476 | 35 | +1,441 | 67,951 | 39,208 |
a Data include all ships 1,600 gross tons and over excluding vessels in Black and Baltic Seas and on the Great Lakes.
b Figures do not include gains through additions to pool of neutral or captured shipping.
c Losses on an occurrence basis.
d Data not available before this date.
Source: ASF Statistical Review World War II, app. G, p. 144.
Appendix F-2: Growth of the U.S.-Controlled Tanker Fleet, December 1941–October 1945
(In thousands of dead-weight tons)a
| Date | Total | WSA Control | U.S. Civilian Control Other Than WSA | Army Owned or Bareboated | Navy Owned or Bareboated b |
| 1941 | |||||
| December | 5,603 | – | 5,207 | 4 | 392 |
| 1942 | |||||
| January | 5,593 | – | 5,182 | 6 | 405 |
| April | 5,442 | – | 4941 | 6 | 495 |
| July | 5,082 | c 4,388 | 131 | 6 | 557 |
| October | 5,299 | 4,573 | 63 | 9 | 654 |
| 1943 | |||||
| January | 5,469 | 4,695 | .a | 9 | 721 |
| April | 5,838 | 4,890 | 41 | 9 | 898 |
| July | 6,616 | 5,632 | 59 | 9 | 916 |
| October | 7,432 | 6,394 | 59 | 9 | 970 |
| 1944 | |||||
| January | 8,820 | 7,516 | 111 | 9 | 1,184 |
| April | 9,707 | 8,242 | 90 | 9 | 1,366 |
| July | 10,753 | 9,072 | 121 | 8 | 1,552 |
| October | 11,656 | 9,881 | 121 | 9 | 1,645 |
| 1945 | |||||
| January | 12,727 | 10,913 | 105 | 9 | 1,700 |
| April | 13,815 | 11,785 | 197 | 9 | 1,824 |
| July | 14,582 | 12,463 | 214 | 9 | 1,896 |
| October | 14,954 | 12,709 | 214 | 9 | 2,023 |
a Includes vessels 1,600 gross tons and over; data as of the first day of each month.
b Includes naval auxiliaries converted to aircraft carriers.
c WSA assumed control of American shipping between April and July 1942.
Source: WSA Shipping Summary, Dec 45, p. 106.
Appendix F-3: Ships in Army Service
| Year and Month | Number Ships | M/T Capacity | Troop Capacity | Atlantic | Pacific | ||||
| Total | Trans-oceanic | Within Theater | Total | Trans-oceanic | Within Theater | ||||
| 1943 | |||||||||
| July | 779 | 7,048,578 | 269,282 | 512 | – | – | 267 | – | – |
| August | 927 | 8,519,727 | 349,590 | 610 | – | – | 317 | – | – |
| September | 946 | 8,446,703 | 404,974 | 578 | – | – | 368 | – | – |
| October | 891 | 7,747,367 | 443,596 | 505 | – | – | 386 | – | – |
| November | 891 | 7,934,192 | 414,784 | 523 | a 444 | a 79 | a 368 | a 273 | a 95 |
| December | 986 | 8,761,845 | 514,438 | 549 | 477 | 72 | 437 | 332 | 105 |
| 1944 | |||||||||
| January | 1,048 | 9,565,809 | 517,649 | 589 | 510 | 79 | 459 | 355 | 104 |
| February | 1,121 | 10,194,397 | 585,891 | 652 | 569 | 83 | 469 | 323 | 146 |
| March | 1,190 | 11,572,200 | 555,176 | 687 | 632 | 55 | 503 | 333 | 170 |
| April | 1,300 | 12,163,300 | 567,949 | 747 | 672 | 75 | 553 | 365 | 188 |
| May | 1,508 | 14,030,300 | 572,392 | 896 | 626 | 270 | 612 | 385 | 227 |
| June | 1,498 | 14,550,200 | 503,777 | 895 | 570 | 325 | 603 | 378 | 225 |
| July | 1,588 | 15,351,900 | 515,022 | 91,508 | 699 | 299 | 590 | 374 | 216 |
| August | 1,673 | 16,347,000 | 519,562 | 1,031 | 755 | 276 | 642 | 410 | 232 |
| September | 1,703 | 16,624,600 | 569,345 | 1,019 | 822 | 197 | 684 | 437 | 247 |
| October | 1,720 | 16,954,900 | 538,196 | 979 | 806 | 173 | 741 | 440 | 301 |
| November | 1,743 | 17,345,400 | 538,282 | 914 | 764 | 150 | 829 | 511 | 318 |
| December | 1,765 | 17,727,500 | 517,340 | 937 | 836 | 101 | 828 | 564 | 264 |
| 1945 | |||||||||
| January | 1,574 | 15,653,800 | 441,259 | 793 | 749 | 44 | 781 | 493 | 288 |
| February | 1,564 | 15,274,700 | 483,263 | 813 | 713 | 100 | 751 | 464 | 287 |
| March | 1,464 | 14,149,600 | 455,132 | 750 | 669 | 81 | 714 | 422 | 292 |
| April | 1,461 | 14,057,400 | 464,138 | 692 | 638 | 54 | 769 | 477 | 292 |
| May | 1,505 | 14,416,600 | 502,959 | 629 | 577 | 52 | 876 | 566 | 310 |
| June | 1,537 | 14,584,000 | 476,155 | 492 | 470 | 22 | 1,045 | 739 | 306 |
| July | 1,706 | 16,192,700 | 620,355 | 440 | 424 | 16 | 1,266 | 973 | 293 |
| August | 1,594 | 14,732,700 | 665,555 | 433 | 420 | 13 | 1,161 | 884 | 277 |
a Data before this date unavailable.
Source: ASF Statistical &vino, World War II, app. G, p. 145.