German submarine U-615

History
Nazi Germany
Name	U-615
Ordered	15 August 1940
Builder	Blohm & Voss, Hamburg
Yard number	591
Laid down	20 May 1941
Launched	8 February 1942
Commissioned	26 March 1942
Fate	Sunk in the Caribbean Sea, 7 August 1943
General characteristics
Class and type	Type VIIC submarine
Displacement	769 t (757 long tons); 871 t (857 long tons) submerged; 1,070 t (1,053 long tons) total;
Length	67.10 m (220 ft 2 in) total; 50.50 m (165 ft 8 in) pressure hull;
Beam	6.20 m (20 ft 4 in) total; 4.70 m (15 ft 5 in) pressure hull;
Draught	4.74 m (15 ft 7 in)
Propulsion	Diesel-electric; 3,200 PS (2,354 kW; 3,156 shp) surfaced; 750 PS (552 kW; 740 shp) submerged;
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced; 7.66 knots (14.19 km/h; 8.81 mph) submerged;
Range	13,700 nmi (25,400 km; 15,800 mi) at 10 knots (19 km/h; 12 mph) surfaced; 125 nmi (232 km; 144 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	220 m (721 ft 9 in)
Complement	4 officers, 40–56 enlisted44-52 men
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern); 14 × torpedoes or 26 TMA mines; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); various AA guns;
Service record
Commanders:	Kptlt. Ralph Kapitzky

German submarine U-615 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.^[1]

Commissioned in 1942, and commanded by Kptlt. Ralph Kapitzky, she was depth charged and sunk in the Caribbean Sea, north of Porlamar, on 7 August 1943,^[2] in position 12°38′N 64°15′W / 12.633°N 64.250°W / 12.633; -64.250, by US 6 Mariner and 1 Ventura aircraft. It was the largest aircraft hunt ever mounted for a single U-boat. Of her crew 4 (including her captain) were killed, and 43 survived.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-615 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged.^[3] 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 BBC GG UB 720/8 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).^[3]

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).^[3] 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-615 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, and an anti-aircraft gun. The boat had a complement of between forty-four and sixty.^[3]

Wolfpacks

U-615 took part in 10 wolfpacks, namely.

Pfeil (12–22 September 1942)
Blitz (22–26 September 1942)
Tiger (26–30 September 1942)
Wotan (5–19 October 1942)
Draufgänger (1–11 December 1942)
Ungestüm (11–30 December 1942)
Burggraf (25 February – 5 March 1943)
Raubgraf (7–20 March 1943)
Seewolf (24–30 March 1943)
Adler (7–13 April 1943)

Summary of raiding history

Date	Ship Name	Nationality	Tonnage (GRT)	Fate^[4]
11 October 1942	El Lago	Panama	4,221	Sunk
23 October 1942	Empire Star	United Kingdom	12,656	Sunk
11 April 1943	Edward B. Dudley	United States	7,177	Sunk
28 July 1943	Rosalia	Netherlands	3,177	Sunk

References

^ Kelshell, Gaylord T. M. (2003), "Ralph Kapitsky – Battle in the Caribbean and the Death of U-615", in Savas, Theodore P. (ed.), Contemporary Conflict Resolution, Naval Institute Press, pp. 43–73, ISBN 1591148170.
^ Heden, Karl E. (2006), Sunken Ships World War II: US Naval Chronology, Including Submarine Losses of the United States, England, Germany, Japan, Italy, Branden Books, p. 76, ISBN 0828321183.
^ ^a ^b ^c ^d Gröner 1991, pp. 43–46.
^ Helgason, Guðmundur. "U-615". German U-boats of WWII - uboat.net. Retrieved 6 February 2014.

Busch, Rainer; Röll, Hans-Joachim (1999). Deutsche U-Boot-Verluste von September 1939 bis Mai 1945 (in German). Vol. IV. Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0514-2. {{cite book}}: |work= ignored (help); Invalid |ref=harv (help)
Edwards, Bernard (1996). Dönitz and the Wolf Packs - The U-boats at War. Cassell Military Classics. p. 139. ISBN 0-304-35203-9.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4. {{cite book}}: |work= ignored (help); Cite has empty unknown parameter: |last-author-amp= (help)

External links

Helgason, Guðmundur. "The Type VIIC boat U-615". German U-boats of WWII - uboat.net. Retrieved 29 December 2014.

[Kelshell2003-1] Kelshell, Gaylord T. M. (2003), "Ralph Kapitsky – Battle in the Caribbean and the Death of U-615", in Savas, Theodore P. (ed.), Contemporary Conflict Resolution, Naval Institute Press, pp. 43–73, ISBN 1591148170.

[Heden2006-2] Heden, Karl E. (2006), Sunken Ships World War II: US Naval Chronology, Including Submarine Losses of the United States, England, Germany, Japan, Italy, Branden Books, p. 76, ISBN 0828321183.

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

[4] Helgason, Guðmundur. "U-615". German U-boats of WWII - uboat.net. Retrieved 6 February 2014.

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v t e 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 August 1943
Shipwrecks	1 Aug: U-383, U-454 2 Aug: USS PT-109, U-106, V 420 Alcyon 3 Aug: U-335, U-572, U-706 4 Aug: Catania, Fort La Montee, Lombardia, U-489 5 Aug: USS Plymouth, U-34 6 Aug: Arashi, Hagikaze, Kawakaze 7 Aug: S-1, U-84, U-117, U-615 9 Aug: U-664 11 Aug: U-468, U-525, U-604 12 Aug: Clan Macarthur 13 Aug: USS John Penn 14 Aug: HMS Saracen 15 Aug: LST-414 16 Aug: Empire Kestrel 18 Aug: Cha-5, Cha-12, U-403 19 August: I-17 20 Aug: U-197, U-670 23 Aug: USS Crow, Riilahti, USS SC-694 24 Aug: Erg, Sagaing, U-134, U-185 25 Aug: Ro-35, U-523 27 Aug: HMS Egret, U-847 28 Aug: U-639 29 Aug: Niels Juel 30 Aug: U-634 Unknown date: HMS Parthian, SA 7
Other incidents	4 Aug: HMS Arrow, Kembu Maru 10 Aug: USS Brant 11 Aug: USS Raton 18 Aug: USS Abner Read 30 Aug: USS Cod 31 Aug: USS Stingray
1942 1943 1944 July 1943 September 1943