German submarine U-397

History
Nazi Germany
Name	U-397
Ordered	20 January 1941
Builder	Howaldtswerke, Kiel
Yard number	29
Laid down	29 August 1942
Launched	6 October 1943
Commissioned	20 November 1943
Fate	Scuttled on 5 May 1945, in northern Germany
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long tons) surfaced; 871 t (857 long tons) submerged;
Length	67.23 m (220 ft 7 in) o/a ; 50.50 m (165 ft 8 in) pressure hull ;
Beam	6.20 m (20 ft 4 in) o/a; 4.70 m (15 ft 5 in) pressure hull;
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels); 750 PS (550 kW; 740 shp) (electric);
Propulsion	2 shafts; 2 × diesel engines ; 2 × electric motors ;
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced; 7.6 knots (14.1 km/h; 8.7 mph) submerged;
Range	8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced; 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	230 m (750 ft); Crush depth: 250–295 m (820–968 ft);
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern); 14 × torpedoes ; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); 1 × 3.7 cm (1.5 in) Flak M42 AA gun ; 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns ;
Service record
Part of:	5th U-boat Flotilla ; 20 November 1943 – 31 May 1944; 7th U-boat Flotilla ; 1 – 30 June 1944; 23rd U-boat Flotilla ; 1 July 1944 – 19 February 1945; 31st U-boat Flotilla ; 20 February – 5 May 1945;
Identification codes:	M 53 543
Commanders:	Oblt.z.S. Fritz Kallipke; 20 November 1943 – 16 July 1944; Oblt.z.S. Friedrich Stege; 17 July 1944 – 25 April 1945; Kptlt. Gerhard Groth; 26 April – 5 May 1945;
Operations:	1 patrol:; a. 8 – 24 June 1944; b. 28 June – 4 July 1944;
Victories:	None

Last updated March 08, 2024

German submarine U-397 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-397 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[2] She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two Garbe, Lahmeyer & Co. RP 137/c double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).^[2]

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph).^[2] When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-397 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, (220 rounds), one 3.7 cm (1.5 in) Flak M42 and two twin 2 cm (0.79 in) C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.^[2]

Service history

The submarine was laid down on 29 August 1942 at the Howaldtswerke (yard) at Kiel as yard number 29, launched on 6 October 1943 and commissioned on 20 November under the command of Oberleutnant zur See Fritz Kallipke.

She served with the 5th U-boat Flotilla from 20 November 1943 and the 7th flotilla from 1 June of the same year. She was reassigned to the 23rd flotilla on 1 July 1944, then the 31st flotilla on 20 February 1945.

The boat's first patrol was preceded by the short journey from Kiel in Germany to Stavanger, arriving at the Norwegian port on 2 June 1944.

Patrol

U-397 departed Stavanger on 8 June 1944 and arrived back there on the 24th.

The boat moved back to Kiel on 4 July 1944.

Fate

The submarine was scuttled on 5 May 1945 in Geltinger Bucht (east of Flensburg).^[1]

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References

1 2 3 Helgason, Guðmundur. "The Type VIIC boat U-397". German U-boats of WWII – uboat.net. Retrieved 10 September 2012.
1 2 3 4 Gröner 1991, pp. 43–46.

Bibliography

Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN 1-55750-186-6.
Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945[German U-boat losses from September 1939 to May 1945]. Der U-Boot-Krieg (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.

External links

Helgason, Guðmundur. "The Type VIIC boat U-397". German U-boats of WWII – uboat.net. Retrieved 26 December 2014.

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[uboatnet-1] 1 2 3 Helgason, Guðmundur. "The Type VIIC boat U-397". German U-boats of WWII – uboat.net. Retrieved 10 September 2012.

[FOOTNOTEGröner199143–46-2] 1 2 3 4 Gröner 1991, pp. 43–46.

[1]

[2]

v t e German Type VII submarines
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-48 U-49 U-50 U-51 U-52 U-53 U-54 U-55 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-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-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-601 U-602 U-603 U-604 U-605 U-606 U-607 U-608 U-609 U-610 U-611 U-612 U-613 U-614 U-615 U-616 U-617 U-618 U-619 U-620 U-621 U-622 U-623 U-624 U-625 U-626 U-627 U-628 U-629 U-630 U-631 U-632 U-633 U-634 U-635 U-636 U-637 U-638 U-639 U-640 U-641 U-642 U-643 U-644 U-645 U-646 U-647 U-648 U-649 U-650 U-651 U-652 U-653 U-654 U-655 U-656 U-657 U-658 U-659 U-660 U-661 U-662 U-663 U-664 U-665 U-666 U-667 U-668 U-669 U-670 U-671 U-672 U-673 U-674 U-675 U-676 U-677 U-678 U-679 U-680 U-681 U-682 U-683 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-744 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-821 U-822 U-825 U-826 U-901 U-903 U-904 U-905 U-907 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-691 U-827 U-828 U-929 U-930 U-995 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-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-1063 U-1064 U-1065 U-1103 U-1104 U-1105 U-1106 U-1107 U-1108 U-1109 U-1110 U-1163 U-1164 U-1165 U-1166 U-1167 U-1168 U-1169 U-1170 U-1171 U-1172 U-1271 U-1272 U-1273 U-1274 U-1275 U-1276 U-1277 U-1278 U-1279 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
Preceded by: Type II Followed by: Type IX List of U-boats of Germany

v t e Shipwrecks and maritime incidents in May 1945
Shipwrecks	1 May: Argo , TA 43 , U-3006 , U-3009 2 May: Admiral Hipper , USS Thornton, U-8 , U-14 , U-60 , U-61 , U-62 , U-71 , U-72 , U-120 , U-121 , U-137 , U-139 , U-140 , U-141 , U-142 , U-146 , U-148 , U-151 , U-152 , U-316 , U-552 , U-554 , U-612 , U-717 , U-929 , U-1007 , U-1308 , U-2327 , U-2359 , U-2510 , U-2526 , U-2527 , U-2528 , U-2531 , U-3002 , U-3016 , U-3018 , U-3019 , U-3020 , U-3021 , U-3504 , U-3516 , U-3517 , U-3521 , U-3522 3 May: Arcona, Cap Arcona, Deutschland, Emden , USS Lagarto, USS Little, USS LSM(R)-195, Medusa, Nordland , Schlesien , Thielbek, UA , UB , UD-1 , UD-2 , UD-3 , UD-4 , U-48 , U-52 , U-57 , U-58 , U-59 , U-101 , U-328 , U-339 , U-428 , U-446 , U-475 , U-560 , U-704 , U-708 , U-747 , U-748 , U-795 , U-822 , U-828 , U-876 , U-903 , U-922 , U-924 , U-958 , U-1166, U-1170 , U-1192 , U-1196 , U-1201 , U-1205 , U-1210 , U-1227 , U-1275 , U-2330 , U-2332 , U-2355 , U-2371 , U-2501 , U-2503 , U-2504 , U-2508 , U-2512 , U-2519 , U-2520 , U-2521 , U-2524 , U-2533 , U-2534 , U-2535 , U-2536 , U-2539 , U-2543 , U-2545 , U-2546 , U-2548 , U-2552 , U-3001 , U-3005 , U-3010 , U-3011 , U-3012 , U-3013 , U-3014 , U-3023 , U-3024 , U-3025 , U-3026 , U-3027 , U-3028 , U-3029 , U-3031 , U-3032 , U-3037 , U-3038 , U-3039 , U-3040 , U-3507 , U-3509 , U-3511 , U-3513 , U-3518 , U-3525 , U-3530 , U-4705 , U-4712 , Z43 4 May: USS LSM(R)-190, USS LSM(R)-194, USS Luce, USS Morrison, Orion , USS PGM-17, U-30 , U-46 , U-267 , U-393 , U-711 , U-721 , U-792 , U-793 , U-904 , U-1132 , U-1161 , U-1168 , U-1303 , U-1304 , U-2338 , U-2540 , U-3033 , U-3034 , U-4709 , U-4711 5 May: T36 , U-17 , U-38 , U-236 , U-290 , U-349 , U-351 , U-370 , U-397 , U-534 , U-579 , U-733 , U-746 , U-750 , U-794 , U-827 , U-999 , U-1008 , U-1016 , U-1025 , U-1056 , U-1162 , U-1193 , U-1204 , U-1207 , U-1223 , U-1234 , U-1306 , U-1405 , U-2333 , U-2339 , U-2343 , U-2346 , U-2347 , U-2349 , U-2352 , U-2357 , U-2358 , U-2360 , U-2362 , U-2364 , U-2366 , U-2367 , U-2368 , U-2369 , U-2507 , U-2517 , U-2522 , U-2525 , U-2541 , U-2544 , U-2551 , U-3015 , U-3022 , U-3044 , U-3501 , U-3510 , U-3524 , U-3526 , U-3527 , U-3528 , U-3529 , U-4701 , U-4702 , U-4703 , U-4704 , U-4707 , U-4710 6 May: U-853 , U-881 , U-3523 7 May: Avondale Park, Sneland I, U-1407 8 May: U-37 , U-320 , U-382 , U-2365 , U-2538 , U-3030 , U-3503 16 May: Haguro , Hatsutaka , U-287 18 May: USS Longshaw 20 May: U-963 24 May: HM Motor Gun Boat 2007, U-979 25 May: USS Bates, USS LSM-135 28 May: USS Drexler 29 May: Tenryo Maru 31 May: I-361, Uzbekistan
Other incidents	3 May: USS Aaron Ward 4 May: HMS Formidable, USS Sangamon 9 May: USS England, USS Oberrender 11 May: USS Bunker Hill, USS Evans, USS Hugh W. Hadley 19 May: Kashima, HMS Terrapin 20 May: USS Chase, USS Thatcher 25 May: USS Barry, USS Spectacle, William B. Allison 26 May: USS PC-1603 29 May: USS Shubrick 31 May: Hebrides Unknown date: Nymphe, U-1197
1944 1945 1946 April 1945 June 1945

History

Nazi Germany
Name	U-397
Ordered	20 January 1941
Builder	Howaldtswerke, Kiel
Yard number	29
Laid down	29 August 1942
Launched	6 October 1943
Commissioned	20 November 1943
Fate	Scuttled on 5 May 1945, in northern Germany
General characteristics
Class and type	Type VIIC submarine
Displacement	769 tonnes (757 long tons) surfaced 871 t (857 long tons) submerged
Length	67.23 m (220 ft 7 in) o/a 50.50 m (165 ft 8 in) pressure hull
Beam	6.20 m (20 ft 4 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern) 14 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 × 3.7 cm (1.5 in) Flak M42 AA gun 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns
Service record^[1]
Part of:	5th U-boat Flotilla 20 November 1943 – 31 May 1944 7th U-boat Flotilla 1 – 30 June 1944 23rd U-boat Flotilla 1 July 1944 – 19 February 1945 31st U-boat Flotilla 20 February – 5 May 1945
Identification codes:	M 53 543
Commanders:	Oblt.z.S. Fritz Kallipke 20 November 1943 – 16 July 1944 Oblt.z.S. Friedrich Stege 17 July 1944 – 25 April 1945 Kptlt. Gerhard Groth 26 April – 5 May 1945
Operations:	1 patrol: a. 8 – 24 June 1944 b. 28 June – 4 July 1944
Victories:	None