# Losses during the Battle of the Atlantic

The following is a table of Allied shipping losses in the Battle of the Atlantic during World War II. All shipping losses are in Gross Registered Tonnage (GRT).
| Month, year | Imports to Allies | Sunk by U-boat | Sunk by aircraft | Sunk by warship or raider | Sunk by mines | Total Allied shipping sunk | German submarines lost |
| 39-09Sep. '39 | 3297070 | 153879 | 0 | 5051 | 29537 | 158930 | 2 |
| 39-10Oct. '39 | 3576135 | 134807 | 0 | 32058 | 29490 | 166865 | 5 |
| 39-11Nov. '39 | 4408689 | 51589 | 0 | 1722 | 120958 | 53311 | 1 |
| 39-12Dec. '39 | 4466664 | 80881 | 2949 | 22506 | 82712 | 106336 | 1 |
| 40-01Jan. '40 | 4847044 | 111263 | 23693 | 0 | 77116 | 134956 | 1 |
| 40-02Feb. '40 | 4348820 | 169566 | 853 | 1761 | 54740 | 172180 | 6 |
| 40-03Mar. '40 | 4970525 | 62781 | 8694 | 0 | 35051 | 71475 | 1 |
| 40-04Apr. '40 | 5336917 | 32467 | 13409 | 5358 | 19799 | 51083 | 5 |
| 40-05May '40 | 5362873 | 55580 | 158348 | 6893 | 47716 | 220127 | 1 |
| 40-06Jun. '40 | | 284113 | 105193 | 61857 | 86087 | | 0 |
| 40-07Jul. '40 | | 195825 | 70193 | 80796 | 33598 | | 2 |
| 40-08Aug. '40 | | 267618 | 53283 | 63350 | 11433 | | 3 |
| 40-09Sep. '40 | | 295335 | 56328 | 96288 | 8269 | | 1 |
| 40-10Oct. '40 | | 352407 | 8752 | 32134 | 32548 | | 1 |
| 40-11Nov. '40 | | 146613 | 66438 | 123671 | 46672 | | 2 |
| 40-12Dec. '40 | | 212590 | 14890 | 55728 | 54331 | | 0 |
| 41-01Jan. '41 | 2651399 | 126782 | 78597 | 80796 | 17107 | 302601 | 0 |
| 41-02Feb. '41 | 2621795 | 196783 | 89305 | 89096 | 16507 | 372205 | 0 |
| 41-03Mar. '41 | 2864121 | 243020 | 113314 | 138906 | 23585 | 474879 | 5 |
| 41-04Apr. '41 | 2620531 | 249375 | 323454 | 91579 | 24888 | 616469 | 2 |
| 41-05May '41 | 3466204 | 325492 | 146302 | 15002 | 23194 | 486796 | 1 |
| 41-06Jun. '41 | 3594684 | 310143 | 61414 | 17759 | 15326 | 389316 | 4 |
| 41-07Jul. '41 | 3765724 | 94209 | 9275 | 5792 | 8583 | 109276 | 0 |
| 41-08Aug. '41 | 4002450 | 80310 | 23862 | 24897 | 1400 | 125550 | 4 |
| 41-09Sep. '41 | 4267134 | 202820 | 40812 | 22910 | 14948 | 259866 | 2 |
| 41-10Oct. '41 | 4203224 | 156554 | 35222 | 3305 | 19737 | 191776 | 2 |
| 41-11Nov. '41 | 3336789 | 62196 | 23015 | 17715 | 1714 | 85211 | 5 |
| 41-12Dec. '41 | 3735419 | 124070 | 72850 | 6661 | 63853 | 203581 | 10 |
| 42-01Jan. '42 | | 327357 | 57086 | 3275 | 10079 | | 3 |
| 42-02Feb. '42 | | 476451 | 133746 | 0 | 7242 | | 2 |
| 42-03Mar. '42 | | 537980 | 55706 | 25614 | 16862 | | 6 |
| 42-04Apr. '42 | | 431664 | 82924 | 131188 | 15002 | | 3 |
| 42-05May. '42 | | 607247 | 59041 | 19363 | 18795 | | 4 |
| 42-06Jun. '42 | | 700235 | 54769 | 48474 | 19936 | | 3 |
| 42-07Jul. '42 | | 476065 | 74313 | 54358 | 8905 | | 11 |
| 42-08Aug. '42 | | 544410 | 60532 | 50516 | 0 | | 9 |
| 42-09Sep. '42 | | 485413 | 57526 | 24388 | 0 | | 10 |
| 42-10Oct. '42 | | 619417 | 5686 | 7576 | 5157 | | 16 |
| 42-11Nov. '42 | | 729160 | 53868 | 19178 | 992 | | 13 |
| 42-12Dec. '42 | | 330816 | 4853 | 12312 | 1618 | | 4 |
| 43-01Jan. '43 | | 203128 | 25503 | 7040 | 18475 | | 6 |
| 43-02Feb. '43 | | 359328 | 75 | 4858 | 34153 | | 19 |
| 43-03Mar. '43 | | 627377 | 65128 | 0 | 884 | | 15 |
| 43-04Apr. '43 | | 327943 | 3034 | 1742 | 11961 | | 15 |
| 43-05May. '43 | | 264853 | 20942 | 0 | 1568 | | 41 |
| 43-06Jun. '43 | | 97753 | 6083 | 17655 | 4334 | | 17 |
| 43-07Jul. '43 | | 242145 | 106005 | 7176 | 72 | | 37 |
| 43-08Aug. '43 | | 86579 | 14133 | 0 | 19 | | 25 |
| 43-09Sep. '43 | | 118841 | 22905 | 9977 | 4396 | | 10 |
| 43-10Oct. '43 | | 97407 | 22680 | 0 | 19774 | | 26 |
| 43-11Nov. '43 | | 66585 | 62452 | 8538 | 6666 | | 19 |
| 43-12Dec. '43 | | 86967 | 75471 | 0 | 6086 | | 8 |
| 44-01Jan. '44 | | 92278 | 24237 | 6420 | 7176 | | 16 |
| 44-02Feb. '44 | | 92923 | 21616 | 2085 | 0 | | 20 |
| 44-03Mar. '44 | | 142944 | 0 | 7840 | 7176 | | 25 |
| 44-04Apr. '44 | | 62149 | 19755 | 0 | 0 | | 21 |
| 44-05May. '44 | | 24424 | 2873 | 0 | 0 | | 24 |
| 44-06Jun. '44 | | 57875 | 9008 | 1812 | 24654 | | 25 |
| 44-07Jul. '44 | | 63351 | 0 | 7219 | 8114 | | 24 |
| 44-08Aug. '44 | | 98729 | 0 | 7176 | 7194 | | 35 |
| 44-09Sep. '44 | | 43368 | 0 | 0 | 1437 | | 22 |
| 44-10Oct. '44 | | 7176 | 0 | 0 | 4492 | | 13 |
| 44-11Nov. '44 | | 29592 | 7247 | 1141 | 0 | | 8 |
| 44-12Dec. '44 | | 58518 | 35920 | 0 | 35612 | | 15 |
| 45-01Jan. '45 | | 56988 | 7176 | 2365 | 16368 | | 14 |
| 45-02Feb. '45 | | 65233 | 7177 | 3899 | 18076 | | 21 |
| 45-03Mar. '45 | | 65077 | 0 | 3968 | 36064 | | 33 |
| 45-04Apr. '45 | | 72439 | 22822 | 0 | 8733 | | 53 |
| 45-05May. '45 | | 11439 | 7176 | 0 | 0 | | 35 |
Total losses by U-boats: 14,668,785