4.- Unterseebootsflottille
La 4.- Unterseebootsflottille fue fundada en mayo de 1941 bajo el mando de Werner Jacobsen. Como unidad de formación, 280 submarinos recibieron, en ella su formación básica. La Flotilla fue disuelta en mayo de 1945
Base
En Stettin desde mayo de 1941 a mayo de 1945
Commandantes
Werner Jacobsen desde mayo de 1941 a agosto de 1941
Heinz Fischer desde agosto de 1941 hasta mayo de 1945
Tipos de submarinos
VIIC, VIIC41, VIIC42, IX, IXC, IXC40,
IXD, XB, XIV, XXI, XXIII
Asignación de submarinos
U-37, U-38, U-78, U-118, U-119, 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-167, U-168, U-169, U-170, U-171, U-172
U-173, U-174, U-175, U-176, U-177, U-178, U-179
U-180, U-181, U-182, 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-195, U-196, U-197, U-198, U-199, U-200
U-219, U-220, U-233, U-290, 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-351, U-370, U-459, U-460, U-461
U-462, U-463, U-464, U-475, U-487, U-488, U-489
U-490, 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, 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-579
U-676, U-801, U-802, U-803, U-804, U-805, U-806
U-821, U-822, U-841, U-842, U-843, U-844, U-845
U-846, U-847, U-848, U-849, U-850, U-851, U-852
U-853, U-854, U-855, U-856, U-857, U-858, U-859
U-860, U-861, U-862, U-863, U-864, U-865, U-866
U-867, U-868, U-869, U-870, U-871, U-872, U-873
U-874, U-875, U-876, U-877, U-878, U-879, U-880
U-881, U-883, U-889, U-901, U-925, U-926, U-927
U-928, U-929, U-930, U-1025, U-1221, U-1222, U-1223
U-1234, U-1301, U-1302, U-1303, U-1304, U-1305, U-1306
U-1307, U-1308, U-2321, U-2322, U-2323, U-2324, U-2325
U-2326, U-2336, U-2339, U-2343, U-2346, U-2347, U-2348
U-2349, U-2350, U-2351, U-2352, U-2353, U-2354, U-2355
U-2356, U-2357, U-2358, U-2359, U-2360, U-2361, U-2362
U-2363, U-2364, U-2365, U-2366, U-2367, U-2368, U-2369
U-2371, U-3001, U-3002, U-3003, U-3004, U-3005, U-3006
U-3007, U-3008, U-3009, U-3010, U-3011, U-3012, U-3013
U-3014, U-3015, U-3016, U-3017, U-3018, U-3019, U-3020
U-3021, U-3022, U-3023, U-3024, U-3025, U-3026, U-3027
U-3028, U-3029, U-3030, U-3031, U-3032, U-3033, U-3034
U-3035, U-3037, U-3038, U-3039, U-3040, U-3041, U-3044
Fuente:
http://uboat.net/flotillas/4flo.htm
Chris Bishop "Kriegsmarine U-Boats 1939-45"