Germany has commissioned over 1,500 U-boats () into its various navies from 1906 to the present day. The submarines have usually been designated with a U followed by a number, although World War I coastal submarines and coastal minelaying submarines used the UB and UC prefixes, respectively. When Germany resumed building submarines in the 1930s, the numbering of the submarines was restarted at 1. The renumbering was restarted at 1 a third time when Germany resumed building submarines in the 1960s.

World War I–era U-boats

There were some 380 U-boats commissioned into the Kaiserliche Marine in the years before and during World War I. Although the first four German U-boats—, , , and —were commissioned before 1910, all four served in a training capacity during the war. German U-boats used during World War I were divided into three series. The U designation was generally reserved for ocean-going attack torpedo U-boats. The UB designation was used for coastal attack U-boats, while the UC designation was reserved for coastal minelaying U-boats.

U-boats U-boats designed primarily for deep water service were designated with a U prefix and numbered up to 167.

Type U 1

Type U 2

Type U 3

Type U 5

Type U 9

Type U 13

Type U 16

Type U 17

Type U 19

Type U 23

Type U 27

Type U 31

Type U 43

Type U 51

Type U 57

Type U 63

Type U 66 (Type UD)

The Type U 66 submarines were originally constructed for Austro-Hungary as the U-7 class, but were sold to Germany at the start of WWI.

Type UE I (Type U 71)

Type U 81

Type U 87

Type U 93

Type U 115

Type UE II (Type U 117)

Type U 127

Type Large MS (Type U 135)

Type U 139

Type U 142

Type U 151 (Deutschland-class submarine)

Type U 158

UB coastal U-boats Coastal attack torpedo U-boats were smaller craft intended for operation closer to land. They were designated with a UB prefix and numbered up to 155.

Type UB I

Type UB II

Type UB III

UB-50 UB-51 UB-52 UB-53 UB-54 UB-55 UB-56 UB-57 UB-58 UB-59 UB-60 UB-61 UB-62 UB-63 UB-64 UB-65 UB-66 UB-67 UB-68 UB-69 UB-70 UB-71 UB-72 UB-73 UB-74 UB-75 UB-76 UB-77 UB-78 UB-79 UB-80 UB-81 UB-82 UB-83 UB-84 UB-85 UB-86 UB-87 UB-88 UB-89 UB-90 UB-91 UB-92 UB-93 UB-94 UB-95 UB-96 UB-97 UB-98 UB-99 UB-100 UB-101 UB-102 UB-103 UB-104 UB-105 UB-106 UB-107 UB-108 UB-109 UB-110 UB-111 UB-112 UB-113 UB-114 UB-115 UB-116 UB-117 UB-118 UB-119 UB-120 UB-121 UB-122 UB-123 UB-124 UB-125 UB-126 UB-127 UB-128 UB-129 UB-130 UB-131 UB-132 UB-133

UC coastal minelaying U-boats

Coastal minelaying U-boats were smaller vessels intended to mine enemy harbors and approaches. They were designated with a UC prefix and numbered up to 114.

Type UC I

UC-1 UC-2 UC-3 UC-4 UC-5 UC-6 UC-7 UC-8 UC-9 UC-10 UC-11 UC-12 UC-13 UC-14 UC-15

Type UC II

UC-16 UC-17 UC-18 UC-19 UC-20 UC-21 UC-22 UC-23 UC-24 UC-25 UC-26 UC-27 UC-28 UC-29 UC-30 UC-31 UC-32 UC-33 UC-34 UC-35 UC-36 UC-37 UC-38 UC-39 UC-40 UC-41 UC-42 UC-43 UC-44 UC-45 UC-46 UC-47 UC-48 UC-49 UC-50 UC-51 UC-52 UC-53 UC-54 UC-55 UC-56 UC-57 UC-58 UC-59 UC-60 UC-61 UC-62 UC-63 UC-64 UC-65 UC-66 UC-67 UC-68 UC-69 UC-70 UC-71 UC-72 UC-73 UC-74 UC-75 UC-76 UC-77 UC-78 UC-79

Type UC III

Thirty-five Type UC III submarines were planned, but only 25 were completed. Nine of these (UC-106 to UC-114) were never commissioned and were awarded to the United Kingdom and France and broken up in 1921. Ten of these (UC-80 to UC-89) were broken up at yard

UC-80 UC-81 UC-82 UC-83 UC-84 UC-85 UC-86 UC-87 UC-88 UC-89

UC-91 UC-92 UC-93 UC-94 UC-95 UC-96 UC-97 UC-98 UC-99 UC-100 UC-101 UC-102 UC-103 UC-104 UC-105

Foreign U-boats At the outbreak of World War I Germany took charge of a number of submarines under construction in German shipyards for other countries.

(ex-Norwegian A-class submarine A-5) U-66 to U-70 (ex-Austro-Hungarian U-7 class U-7 to U-11) US-1 (ex-Russian Bars class Burevestnik), only test run - not in service US-2 (ex-Russian Bars class Orlan), Commissioned later abandoned to White Russian Forces US-3 (ex-Russian Bars class Utka), only test run - not in service US-4 (ex-Russian Bars class Gagara), only test run - not in service

World War II U-boats

In the World War II era, Germany commissioned some 1,250 U-boats into the Kriegsmarine.

Type I

Type II

Type IIA

Type IIB

U-7 U-8 U-9 U-10 U-11 U-12 U-13 U-14 U-15 U-16 U-17 U-18 U-19 U-20 U-21 U-22 U-23 U-24 U-120 U-121

Type IIC

U-56 U-57 U-58 U-59 U-60 U-61 U-62 U-63

Type IID

U-137 U-138 U-139 U-140 U-141 U-142 U-143 U-144 U-145 U-146 U-147 U-148 U-149 U-150 U-151 U-152

Type VII

Type VIIA

U-27 U-28 U-29 U-30 U-31 U-32 U-33 U-34 U-35 U-36

Type VIIB

U-45 U-46 U-47

U-50

U-52

U-73 U-74 U-75 U-76 U-83 U-84 U-85 U-86 U-87 U-99 U-100 U-101 U-102

Type VIIC

U-69 U-70 U-71 U-72 U-77 U-78 U-79 U-80 U-81 U-82 U-88 U-89 U-90 U-91 U-92 U-93 U-94 U-95 U-96 U-97 U-98 U-132 U-133 U-134 U-135 U-136 U-201 U-202 U-203 U-204 U-205 U-206 U-207 U-208 U-209 U-210 U-211 U-212 U-221 U-222 U-223 U-224 U-225 U-226 U-227 U-228 U-229 U-230 U-231 U-232 U-235 U-236 U-237 U-238 U-239 U-240 U-241 U-242 U-243 U-244 U-245 U-246 U-247 U-248 U-249 U-250 U-251 U-252 U-253 U-254 U-255 U-256 U-257 U-258 U-259 U-260 U-261 U-262 U-263 U-264 U-265 U-266 U-267 U-268 U-269 U-270 U-271 U-272 U-273 U-274 U-275 U-276 U-277 U-278 U-279 U-280 U-281 U-282 U-283 U-284 U-285 U-286 U-287 U-288 U-289 U-290 U-291 U-301 U-302 U-303 U-304 U-305 U-306 U-307 U-308 U-309 U-310 U-311 U-312 U-313 U-314 U-315 U-316 U-331 U-332 U-333 U-334 U-335 U-336 U-337 U-338 U-339 U-340 U-341 U-342 U-343 U-344 U-345 U-346 U-347 U-348 U-349 U-350 U-351 U-352 U-353 U-354 U-355 U-356 U-357 U-358 U-359 U-360 U-361 U-362 U-363 U-364 U-365 U-366 U-367 U-368 U-369 U-370 U-371 U-372 U-373 U-374 U-375 U-376 U-377 U-378 U-379 U-380 U-381 U-382 U-383 U-384 U-385 U-386 U-387 U-388 U-389 U-390 U-391 U-392 U-393 U-394 U-395 U-396 U-397 U-398 U-399 U-400 U-401 U-402 U-403 U-404 U-405 U-406 U-407 U-408 U-409 U-410 U-411 U-412 U-413 U-414 U-415 U-416 U-417 U-418 U-419 U-420 U-421 U-422 U-423 U-424 U-425 U-426 U-427 U-428 U-429 U-430 U-431 U-432 U-433 U-434 U-435 U-436 U-437 U-438 U-439 U-440 U-441 U-442 U-443 U-444 U-445 U-446 U-447 U-448 U-449 U-450 U-451 U-452 U-453 U-454 U-455 U-456 U-457 U-458 U-465 U-466 U-467 U-468 U-469 U-470 U-471 U-472 U-473 U-474 U-475 U-476 U-477 U-478 U-479 U-480 U-481 U-482 U-483 U-484 U-485 U-486 U-551 U-552 U-553 U-554 U-555 U-556 U-557 U-558 U-559 U-560 U-561 U-562 U-563 U-564 U-565 U-566 U-567 U-568 U-569 U-570 U-571 U-572 U-573 U-574 U-575 U-576 U-577 U-578 U-579 U-580 U-581 U-582 U-583 U-584 U-585 U-586 U-587 U-588 U-589 U-590 U-591 U-592 U-593 U-594 U-595 U-596 U-597 U-598 U-599 U-600

U-684 U-685 U-686 U-701 U-702 U-703 U-704 U-705 U-706 U-707 U-708 U-709 U-710 U-711 U-712 U-713 U-714 U-715 U-716 U-717 U-718 U-719 U-720 U-721 U-722 U-731 U-732 U-733 U-734 U-735 U-736 U-737 U-738 U-739 U-740 U-741 U-742 U-743

U-745 U-746 U-747 U-748 U-749 U-750 U-751 U-752 U-753 U-754 U-755 U-756 U-757 U-758 U-759 U-760 U-761 U-762 U-763 U-764 U-765 U-766 U-767 U-768 U-771 U-772 U-773 U-774 U-775 U-776 U-777 U-778 U-779 U-780 U-781 U-782 U-821 U-822 U-823 U-824 U-825 U-826 U-901 U-902 U-903 U-904 U-905 U-906 U-907 U-908 U-921 U-922 U-923 U-924 U-925 U-926 U-927 U-928 U-951 U-952 U-953 U-954 U-955 U-956 U-957 U-958 U-959 U-960 U-961 U-962 U-963 U-964 U-965 U-966 U-967 U-968 U-969 U-970 U-971 U-972 U-973 U-974 U-975 U-976 U-977 U-978 U-979 U-980 U-981 U-982 U-983 U-984 U-985 U-986 U-987 U-988 U-989 U-990 U-991 U-992 U-993 U-994 U-1051 U-1052 U-1053 U-1054 U-1055 U-1056 U-1057 U-1058 U-1101 U-1102 U-1131 U-1132 U-1161 U-1162 U-1191 U-1192 U-1193 U-1194 U-1195 U-1196 U-1197 U-1198 U-1199 U-1200 U-1201 U-1202 U-1203 U-1204 U-1205 U-1206 U-1207 U-1208 U-1209 U-1210

Type VIIC/41

U-292 U-293 U-294 U-295 U-296 U-297 U-298 U-299 U-300 U-317 U-318 U-319 U-320 U-321 U-322 U-323 U-324 U-325 U-326 U-327 U-328 U-329 U-330 U-687 U-688 U-689

U-723 U-724 U-827 U-828 U-929 U-930 U-931 U-932 U-995 U-996 U-997 U-998 U-999 U-1000 U-1001 U-1002 U-1003 U-1004 U-1005 U-1006 U-1007 U-1008 U-1009 U-1010 U-1011 U-1012 U-1013 U-1014 U-1015 U-1016 U-1017 U-1018 U-1019 U-1020 U-1021 U-1022 U-1023 U-1024 U-1025 U-1026 U-1027 U-1028 U-1029 U-1030 U-1031 U-1032 U-1063 U-1064 U-1065 U-1103 U-1104 U-1105 U-1106 U-1107 U-1108 U-1109 U-1110 U-1133 U-1134 U-1135 U-1136 U-1163 U-1164 U-1165 U-1166 U-1167 U-1168 U-1169 U-1170 U-1171 U-1172 U-1173 U-1174 U-1175 U-1176 U-1177 U-1178 U-1179 U-1271 U-1272 U-1273 U-1274 U-1275 U-1276 U-1277 U-1278 U-1279 U-1280 U-1281 U-1282 U-1301 U-1302 U-1303 U-1304 U-1305 U-1306 U-1307 U-1308

Type VIID

U-213 U-214 U-215 U-216 U-217 U-218

Type VIIF

U-1059 U-1060 U-1061 U-1062

Type IX

Type IXA

U-37 U-38 U-39 U-40 U-41 U-42 U-43 U-44

Type IXB

U-64 U-65 U-103 U-104 U-105 U-106 U-107 U-108 U-109 U-110 U-111 U-122 U-123 U-124

Type IXC

U-66 U-67 U-68 U-125 U-126 U-127 U-128 U-129 U-130 U-131 U-153 U-154 U-155 U-156 U-157 U-158 U-159 U-160 U-161 U-162 U-163 U-164 U-165 U-166 U-171 U-172 U-173 U-174 U-175 U-176 U-501 U-502 U-503 U-504 U-505 U-506 U-507 U-508 U-509 U-510 U-511 U-512 U-513 U-514 U-515 U-516 U-517 U-518 U-519 U-520 U-521 U-522 U-523 U-524

Type IXC/40

U-168 U-169 U-170 U-183 U-184 U-185 U-186 U-187 U-188 U-189 U-190 U-191 U-192 U-193 U-194 U-525 U-526 U-527 U-528 U-529 U-530 U-531 U-532 U-533 U-534 U-535 U-536 U-537 U-538 U-539 U-540 U-541 U-542 U-543 U-544 U-545 U-546 U-547 U-548 U-549 U-550 U-801 U-802 U-803 U-804 U-805 U-806 U-807 U-808 U-841 U-842 U-843 U-844 U-845 U-846 U-853 U-854 U-855 U-856 U-857 U-858 U-865 U-866 U-867 U-868 U-869 U-870 U-877 U-878 U-879 U-880 U-881 U-882 U-889 U-890 U-891 U-892 U-1221 U-1222 U-1223 U-1224 U-1225 U-1226 U-1227 U-1228 U-1229 U-1230 U-1231 U-1232 U-1233 U-1234 U-1235

Type IXD

U-177 U-178 U-179 U-180 U-181 U-182 U-195 U-196 U-197 U-198 U-199 U-200 U-847 U-848 U-849 U-850 U-851 U-852 U-859 U-860 U-861 U-862 U-863 U-864 U-871 U-872 U-873 U-874 U-875 U-876 U-883

Type X (XB)

Originally intended as long-range minelayers, the Type X were later used as long-range cargo transports.

U-116 U-117 U-118 U-119 U-219 U-220 U-233 U-234

Type XI The Type XI was a planned artillery boat, armed with four 128-mm guns in two twin turrets along with an Arado Ar 231 floatplane. Four boats were laid down in 1939 but were cancelled at the outbreak of WWII.

U-112 U-113 U-114 U-115

Type XIV

The Type XIV submarine was a shortened version of the Type IXD and used as tankers. Twenty-four were planned, but only 10 were commissioned; three (U-491 to U-494) were cancelled before completed and eleven were never laid down. This type was nicknamed Milchkuh (milk cow).

U-459 U-460 U-461 U-462 U-463 U-464 U-487 U-488 U-489 U-490 U-491 U-492 U-493 U-494 U-495 U-496 U-497

Type XVII

Type XVIIA U-792 U-793 U-794 U-795

Type XVIIB