Minesweeper flotillas of the Kriegsmarine were administrative units which grouped German minesweepers together. There were three types of minesweeper flotillas: standard minesweepers, auxiliary minesweepers, and "mine barrage" vessels. Flotilla commanders operated from a shore office, and were usually commanded by an officer ranked as a Korvettenkapitän. All minesweeper flotillas were under the command of the Führer der Minensuchboote (Leader of Minesweepers) which, by 1940, had been divided into three separate offices for activities in the North Sea, Baltic Sea, and off the coast of France.
When operationally deployed, the minesweepers were under a separate chain of command under the authority of harbor security commanders.[1]
The first minesweeper flotilla of the Kriegsmarine was formed in 1936 from pre-existing units of the Reichsmarine, which had maintained two minesweeper and one auxiliary minesweeper flotillas during the inter-war years. The standard German minesweeper flotilla of World War II contained between seven and fifteen minesweeper class vessels.
+List of minesweeper flotillas | ||||
Flotilla | Formed | Operational areas | Original vessels assigned | Additional vessels assigned |
---|---|---|---|---|
1st | 1936 | German Bight (1939), Norway (1940), France (1942), North Sea (1944) | M 1, M 3, M 4, M 5, M 6, M 7, M 8[2] | M 36, M 37, M 155, M 203, M 204, M 255, M 256 |
2nd | Danzig (1939), Norway (1940), Netherlands (1942), France (1944) | M 2, M 6, M 9, M 10, M 11, M 12, M 13.[3] | M 21, M 25, M 38, M 152, M 153, M 256 | |
3rd | 1940 | North Sea (1940), Finland (1942) | M 15, M 16, M 17, M 18, M 19, M 22, M 29, M 30. | |
4th | 1939 | Norway (1940), Atlantic Coast (1942) | M 36, M 81, M 101, M 132, M 151, M 203, M 204, M 255[4] | |
5th | 1940 | North Sea (1940), Baltic Sea (1941), Norway (1943) | M 4, M 23, M 31, M 201, M 202, M 205, M 251, M 252, M 253 | |
6th | 1939 | North Sea (1939), French Coast (1943) | M 72, M 104, M 117, M 122, M 126, M 145, M 146 | M 38, M 39, M 82, M 83, M 84, M 85, M 102, M 133, M 155, M 156, M 206, M 256, M 265, M 267. |
7th | Baltic Sea (1939), North Sea (1941) | M 75, M 84, M 85, M 102, M 122, M 126 | M 82, M 83, M 154, M 205, M 206. | |
8th | 1941 | French Coast (1941) | M 24, M 26, M 27, M 28, M 32, M 34, M 152, M 254, M 256, M 265, M 277, M 292, M 329, M 370. | |
9th | 1943 | Norway (1943) | M 272, M 273, M 274, M 276, M 306, M 326, M 346, M 348, M 364, M 365. | |
10th | Atlantic Coast (1943) | M 236, M 264, M 275, M 307, M 347, M 366, M 367, M 385, M 408, M 428, M 438. | ||
11th | North Sea (1943) | M 264, M 291, M 307, M 327, M 329, M 347, M 348, M 368, M 386. | ||
12th | 1944 | Baltic Sea (1944) | M 601, M 602, M 603, M 604, M 605, M 612, M 801, M 802, M 803, M 804. | |
13th | 1939 | Baltic Sea (1939), Norway (1940), Netherlands (1942) | M 1301, M 1302, M 1303, M 1304, M 1305, M 1306, M 1307, M 1308 | |
14th | Baltic Sea (1939) | ,,,,,, M 1407, M 1408 | ||
15th | Baltic Sea (1939), Norway (1940) | M 1501, M 1502, M 1503, M 1504, M 1505, M 1506, M 1507, M 1508 | ||
16th | North Sea (1939), France (1943) | M 1601, M 1602, M 1603, M 1604, M 1605, M 1606, M 1607, M 1608, M 1609 | ||
17th | Baltic Sea (1939), Norway (1940) | M 1701, M 1702, M 1703, M 1704, M 1705, M 1706, M 1707, M 1708. | ||
18th | North Sea (1939), Northern France (1942) | M 1801, M 1802, M 1803, M 1804, M 1805, M 1806, M 1807, M 1808. | ||
19th | Baltic Sea (1939) | M 1901, M 1902, M 1903, M 1904, M 1905, M 1906, M 1907, M 1908. | ||
21st | 1942 | Norway (1942) | M 82, M 103, M 261, M 305, M 323, M 324, M 327, M 341, M 342, M 343, M 362, M 383. | M 504, M 526, M 545. |
22nd | 1941 | North Sea (1941), Norway (1943), Baltic Sea (1945) | M 301, M 302, M 303, M 321, M 322, M 361, M 368, M 381, M 382, M 436. | |
23rd | 1942 | Norway (1942), Baltic Sea (1945) | M 324, M 401, M 411, M 423, M 431, M 441, M 443, M 467, M 468. | |
24th | English Channel (1942) | M 343, M 402, M 412, M 422, M 432, M 442, M 452, M 475, M 483. | ||
25th | North Sea (1942), Baltic Sea (1944) | M 278, M 294, M 295, M 328, M 330, M 341, M 342, M 403, M 413, M 423, M 433, M 443, M 451, M 453, M 459, M 460 | ||
26th | 1943 | French Coast (1943) | M 404, M 424, M 434, M 444, M 454, M 476, M 486, M 495 | |
27th | North Sea (1943), Netherlands (1944) | M 261, M 271, M 304, M 323, M 327, M 329, M 362, M 369, M 4ß5, M 414, M 425, M 434, M 435, M 461, M 469, M 471, M 484. | ||
28th | 1942 | English Channel (1942), French Coast (1943) | M 262, M 271, M 304, M 325, M 344, M 345, M 363, M 384, M 463. | |
29th | 1943 | Norway (1943) | Reserve command for the 19th Minesweeper Flotilla | M 406, M 415, M 426, M 436, M 445, M 455, M 462, M 470. |
30th | Reserve command for the 15th Minesweeper Flotilla | M 403, M 406, M 415, M 426, M 436, M 445, M 455, M 462, M 470. | ||
31st | 1940 | North Sea (1940), Baltic Sea (1942) | M 3101, M 3102, M 3103, M 3104, M 3105, M 3106, M 3107, M 3108, M 3109, M 3110, M 3111, M 3112, M 3113, M 3114, M 3115, M 3116, M 3117, M 3118, M 3119, M 3120, M 3121, M 3122, M 3123, M 3124, M 3125, M 3126, M 3127, M 3128, M 3129, M 3130, M 3131, M 3132, M 3133, M 3134, M 3135, M 3136, M 3137, M 3138, M 3139. | |
32nd | Netherlands (1940), Scheldt River (1944) | M 3200, M 3201, M 3202, M 3203, M 3204, M 3205, M 3206, M 3207, M 3208, M 3209, M 3210, M 3211, M 3212, M 3213, M 3214, M 3215, M 3216, M 3217, M 3218, M 3219, M 3220, M 3221, M 3222, M 3223, M 3224, M 3225, M 3226, M 3227, M 3230, M 3231, M 3232, M 3233, M 3234, M 3235, M 3236, M 3237, M 3238, M 3239, M 3240, M 3241, M 3242. | ||
34th | Netherlands (1940) | M 3400, M 3401, M 3402, M 3403, M 3404, M 3405, M 3406, M 3407, M 3408, M 3409, M 3410, M 3411, M 3412, M 3413, M 3414, M 3415, M 3416, M 3417, M 3418, M 3419, M 3420, M 3421, M 3422, M 3423, M 3424, M 3425, M 3426, M 3430, M 3431, M 3432, M 3433, M 3434, M 3435, M 3436, M 3437, M 3438, M 3439, M 3440, M 3441, M 3442 M 3443, M 3444, M 3445. | ||
36th | Denmark (1940) | M 3600, M 3601, M 3602, M 3603, M 3604, M 3605, M 3606, M 3607, M 3608, M 3609, M 3610, M 3611, M 3612, M 3613, M 3614, M 3615, M 3616, M 3617, M 3618, M 3619, M 3620, M 3621, M 3622,M 3623, M 3624, M 3625, M 3626, M 3627, M 3630, M 3631, M 3632, M 3633, M 3634, M 3635, M 3636, M 3637, M 3638, M 3639. | ||
38th | English Channel (1940) | M 3800, M 3801, M 3802, M 3810, M 3811, M 3812, M 3813, M 3814, M 3815, M 3816, M 3817, M 3818, M 3819, M 3820, M 3821, M 3822, M 3823, M 3824, M 3825, M 3826, M 3827, M 3828, M 3829, M 3830, M 3831, M 3832, M 3833, M 3834, M 3835, M 3836, M 3837, M 3838, M 3840, M 3841, M 3846, M 3848, M 3851, M 3852, M 3853, M 3854, M 3855, M 3856, M 3857, M 3860, M 3861, M 3862, M 3863, M 3864, M 3865, M 3866, M 3867, M 3868, M 3869, M 3870, M 3871, M 3872, M 3873, M 3874, M 3875, M 3880, M 3881, M 3882, M 3883, M 3884, M 3885, M 3886, M 3887, M 3889, M 3890, M 3891, M 3892, M 3893, M 3894, M 3895, M 3896. | ||
40th | French Coast (1940) | M 4000, M 4001, M 4002, M 4003, M 4004, M 4005, M 4006, M 4007, M 4008, M 4009, M 4010, M 4011, M 4012, M 4013, M 4014, M 4020, M 4021, M 4022, M 4023, M 4024, M 4030, M 4031, M 4032, M 4033, M 4040, M 4041, M 4042, M 4043, M 4044, M 4045, M 4046, M 4047, M 4055. | ||
42nd | Atlantic Coast (1940) | M 4202, M 4203, M 4204, M 4205, M 4206, M 4207, M 4208, M 4209, M 4211, M 4212, M 4213, M 4214, M 4215, M 4216, M 4217, M 4218, M 4219, M 4221, M 4222, M 4223, M 4224, M 4225, M 4226, M 4227, M 4230, M 4231, M 4232, M 4233, M 4234, M 4235, M 4236, M 4237, M 4238, M 4241, M 4242, M 4243, M 4245, M 4246. | ||
44th | French-Atlantic Coast (1940) | M 4401, M 4402, M 4403, M 4404, M 4405, M 4406, M 4407, M 4408, M 4409, M 4410, M 4411,,,,,,, M 4421, M 4422, M 4423, M 4424, M 4425, M 4426, M 4427, M 4428, M 4429, M 4430, M 4431, M 4432, M 4433, M 4434, M 4435, M 4436, M 4437, M 4438, M 4440, M 4441, M 4442, M 4443, M 4444, M 4445, M 4446, M 4447, M 4448, M 4449, M 4450, M 4451, M 4452, M 4453, M 4454, M 4455, M 4456, M 4457, M 4458, M 4459, M 4460, M 4461, MM 4462, M 4463, M 4464, M 4465, M 4470, M 4471, M 4472, M 4473, M 4474, M 4475. | ||
46th | 1941 | M 4600, M 4601, M 4602, M 4603, M 4604, M 4605, M 4606, M 4607, M 4608, M 4609, M 4610, M 4611, M 4612, M 4613, M 4614, M 4615, M 4616, M 4617, M 4618, M 4619, M 4620, M 4621, M 4622, M 4623, M 4624, M 4625, M 4628. | ||
52nd | 1940 | Norway | M 5201, M 5202, M 5203, M 5204, M 5205, M 5206, M 5207, M 5208, M 5209, M 5210. | |
54th | M 5401, M 5402, M 5403, M 5404, M 5405, M 5406, M 5407, M 5408, M 5409, M 5410, M 5411, M 5412 | |||
56th | M 5601, M 5602, M 5603, M 5604, M 5605, M 5606, M 5607, M 5608, M 5609, M 5610, M 5611, M 5612, M 5613, M 5614, M 5615, M 5616, M 5617, M 5618, M 5619, M 5620, M 5621, M 5622v, M 5623, M 5624, M 5631, M 5632. | |||
70th | 1943 | Italy | M 7002, M 7003, M 7004, M 7005, M 7006, M 7007, M 7008, M 7009, M 7010, M 7011, M 7012, M 7013, M 7014, M 7015, M 7016, M 7017, M 7018, M 7019, M 7020, M 7021, M 7022, M 7030, M 7031, M 7032, M 7033, M 7034, M 7601, M 7602, M 7603, M 7604, M 7605, M 7606, M 7607, M 7608. | |
In addition to the standard minesweeper flotillas, twenty "auxiliary minesweeper" (R boat) flotillas (Räumboots-Flottille) were formed during the Second World War.[5]
Mine barrage flotillas (Sperrbrecherflottille) were composed of auxiliary naval ships and merchant vessels that had been converted to enter minefields ahead of other ships in order to detonate enemy mines. These Sperrbrecher vessels were heavily armored and were occasionally outfitted as anti-aircraft platforms. The Kriegsmarine first organized the mine barrage vessels into Speerbrechergruppe (mine barrage groups) at the start of World War II. Each group contained various auxiliary vessels designated by roman numerals augmented by a naval tender.
Original mine barrage groups
In June 1940, the Kriegsmarine formed a mine barrage unit in the Low Countries known as Sperrbrechergruppe Niederlande. Shortly thereafter, the Kriegsmarine began to designate mine barrage vessels with capitol letters, but only three such vessels were ever declared (Sperrbrecher A, B, & C). By late 1940, the mine barrage vessels were designated with standard numbers while the mine barrage groups were re-designated as flotillas. Eight flotillas were authorized with seven eventually formed; the standard rank for a mine barrage flotilla commander was Fregattenkapitän. As the Sperrbrecher ships were mostly auxiliary vessels, the flotillas were considered administrative in nature and operated from shore offices.
1. Sperrbrecherflottille | September 1940 | 1 Sperrbrechergruppe | Baltic Sea (1940), German Bight (1942) | Sperrbrecher 10, 11, 12, 13, 15, 17, 22, 27, 29, 36, 133, 138, 160, 161, 163, 164, 167, 169, 173, 176, 177 |
2. Sperrbrecherflottille | June 1941 | 2, 4, & 6 Sperrbrechergruppe | French Coast (1941), Normandy (1944) | Sperrbrecher 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16, 19, 20, 21, 32, 34, 35, 36, 122, 136, 137, 146, 153, 163, 168, 175, 178 |
3. Sperrbrecherflottille | October 1940 | 1. Vorpostenflottille | Baltic Sea (1940) | Sperrbrecher 13, 14, 18, 22, 23, 24, 25, 33, 34, 35, 36, 37, 38, 120, 131, 139, 145, 148, 158, 161, 165, 166, 172, 181, 185 |
4. Sperrbrecherflottille | September 1940 | Sperrbrechergruppe Niederlande | English Channel (1940), French Coast (1943) | Sperrbrecher 21, 102, 120, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 167, 168, 170, 171, 183, 184 Flußsperrbrecher 201, 202, 203, 204 |
5. Sperrbrecherflottille | November 1941 | 4. Sperrbrecherflottille | North Sea | Reserve unit for the 4th mine barrage flotilla. Disbanded to form the 8th flotilla in December 1941 |
6. Sperrbrecherflottille | July 1941 | 2. Sperrbrecherflottille | French Coast (1941) | Sperrbrecher 1, 4, 6, 8, 9, 19, 121, 134, 135, 157, 162, 170, 171, 174, 180 |
8. Sperrbrecherflottille | December 1941 | 5. Sperrbrecherflottille | North Sea (1941), Netherlands Coast (1943), Denmark Coast (1944) | Sperrbrecher 26, 28, 33, 102, 145, 147, 148, 149, 150, 153, 154, 179, 185, 190 Flußsperrbrecher 201, 202, 203, 204, 205 |
In addition to the standard Sperrbrecher craft, some flotillas possessed support and tender vessels for refit and supply duties
Mine barrage support vessels