U-boat Archive - BDU KTB PG30331

F.d.U./B.d.U.'S War Log

1 - 15 September 1943

PG30331

1.September 1943.

I.	U 43	-	Op(EV 80)	U 188	-	JA 91	U 358	-	BF 64	U 536	-	BF 48
	66	-	BF 61	196	-	JK 26	382	-	BF 85	566	-	BF 52
	86	-	CF 36	198	-	ES 57	386	-	BF 76	571	-	BF 58
	107	-	Op(DB 30)	214	-	BE 48	389	-	AO 47	600	-	BF 78
	123	-	DG 15	229	-	BF 67	406	-	CF 34	618	-	BF 84
	129	-	BF 79	230	-	CF 73	415	-	CF 75	621	-	Op(BE 58)
	134	-	BF 83	257	-	CE 97	419	-	AO 47	634	-	BE 97
	161	-	EH 84	260	-	BE 53	445	-	CF 86	645	-	BE 76
	168	-	JA 84	262	-	BF 71	460	-	BF 86	653	-	CF 57
	170	-	BF 42	305	-	BE 72	508	-	DG 23	666	-	BF 58
	172	-	DG 31	309	-	AN 29	515	-	BF 72	669	-	BF 73
	177	-	GQ 17	338	-	BE 55	518	-	DG 34	731	-	BF 45
	181	-	JK 37	340	-	BF 83	532	-	JL 22	757	-	BF 83
	183	-	JL 23	341	-	BF 91	533	-	JK 36	760	-	BE 88
										841	-	AN 29

	On Return Passage: U 66 - 86 - 129 - 134 - 172 - 177 - 181 - 185 - 196 - 198 - 230 - 257 - 262 - 340 - 358 - 382 - 406 - 415 - 445 - 508 - 566 - 571 - 600 - 618 - 634 - 653 - 757 - 760.
	Entered Port: U 566 - Brest; U 66 - Lorient; U 358 - St Nazaire; U 571 - La Pallice; U 309 - 841 - Bergen.
	Sailed: U 758 - St. Nazaire; U 274 - Drontheim.

II.	Air Reconnaissance: None.

III.	Reports on the Enemy:
	a) -	b)	None.
	c)	1)	British units were located: CF 8141, BF 1880, BF 1850.
		2)	U-boat sightings: BF 4640, DN 7395, BF 4950, CA 8685, 4 sightings BF 7196 and 1 sighting in unidentified position (Cape area).
		3)	U-boat attacked or was attacked: CA 8552, DB 6193 (U 107).
	d)	None.

IV.	Current Operations:
	a) -	b)	None.
	c)	1)	The Americans have declared the area between 37⁰ 08' North and 37⁰ 38' North, 74⁰ 48' West as far east as the 200 meter line. It can hardly be assumed that this concerns the mine barrage laid by U 230, as the Commander reported that this had been laid in accordance with orders 200 miles closer inshore.
		2)	U 621 is to hand over the second cathode ray tube to U 214 in BE 7618 after first light on 3.9.
		3)	The "Monsun" boats - U 168, 183, 188, 532 and 533 have a rendezvous with the German tanker "Brake" on 8.9. in KS 4792.

- 158 -

			(Trans: "Monsun" boats were based in Penang). Boats will replenish and then proceed N. to their operational areas in the Arabian Ocean after these have been decided.
			As the Japanese have already fought in this area, attack will be sanctioned once the boats have replenished. This is contrary to the operational order issued.
	d)	On 24.8. U 340 picked up 5 airman in outer Biscay.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

2.September 1943.

I.	U 43	-	Op(EV 80)	U 196	-	JJ 53	U 386	-	BF 76	U 600	-	BF 76
	86	-	CG 14	198	-	ES 44	389	-	AN 36	618	-	BF 88
	107	-	Op(DB 30)	214	-	BE 48	406	-	CF 33	621	-	Op(BE 50)
	123	-	DF 39	229	-	BF 83	415	-	CF 57	634	-	BE 98
	129	-	BF 84	230	-	CF 58	419	-	AN 36	648	-	BF 72
	134	-	BF 80	257	-	CE 92	445	-	CF 65	653	-	CF 61
	161	-	ER 22	260	-	BE 51	460	-	BF 84	666	-	BF 82
	168	-	JA 91	262	-	BF 68	508	-	CE 99	669	-	BF 71
	170	-	BE 63	274	-	AF 46	515	-	BE 93	731	-	BE 66
	172	-	CF 73	305	-	BE 47	518	-	DG 24	757	-	BF 80
	177	-	GP 33	338	-	BE 54	532	-	JA 87	758	-	BF 56
	181	-	JK 28	340	-	BF 58	533	-	JL 12	760	-	BE 97
	183	-	JA 86	341	-	BF 82	536	-	BE 93
	188	-	JA 69	382	-	BF 82

	On Return Passage: U 86 - 129 - 134 - 172 - 177 - 181 - 196 - 198 - 230 - 257 - 262 - 340 - 382 - 406 - 415 - 445 - 508 - 600 - 618 - 634 - 653 - 757 - 760.
	Entered Port: U 340 - St. Nazaire; U 262 - La Pallice.
	Sailed: U 584 - Brest.

II.	Air Reconnaissance: Fighter patrols in area BF 70.

III.	Reports on the Enemy:
	a)	A boat reported from BE 75 that she was being attacked by a plane. The signature was garbled. According to dead reckoning it could be only U 214. She is to meet U 621 after first light on 3.8.
		No request for position was transmitted as U 214 has orders to report when she has carried out her rendezvous.
	b)	None.
	c)	1)	British units located in: BF 1930, BF 2771.
		2)	U-boat sightings: CA 5799, CA 8163 and one other in undecodeable position (probably Biscay).
		3)	U-boat attacked or was attacked in CA 8131.
	d)	None.

- 159 -

IV.	Current Operations:
	a)	None.
	b)	U 107 was given orders that if the anti-submarine measures were too strong for her to carry out her mine-laying off Charleston, she was to move out to sea and report.
	c)	None.
	d)	In order to make it more difficult for the enemy to take bearings and pick up our inward and outward bound submarines, orders have been given for the boats to use alternative frequencies, as instructed in Standing Orders, when transmitting passage reports.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

3.September 1943.

I.	U 43	-	Op(EV)	U 188	-	JB 42	U 386	-	BE 96	U 584	-	BF 64
	86	-	CG 12	196	-	JJ 19	389	-	AN 29	600	-	BF 85
	107	-	Op(DB 60)	198	-	ER 37	406	-	CG 12	618	-	BF 83
	123	-	DF 61	214	-	BE 76	415	-	CF 56	621	-	Op(BE 76)
	129	-	BF 86	229	-	BF 81	419	-	AN 29	634	-	BF 74
	134	-	BF 80	230	-	CF 64	445	-	CF 63	645	-	BD 96
	161	-	ER 37	257	-	CF 73	460	-	CG 78	653	-	CF 62
	168	-	JA 69	260	-	BE 42	508	-	CF 75	666	-	BF 66
	170	-	BE 62	274	-	AF 44	515	-	BE 95	669	-	BE 93
	172	-	CF 81	305	-	BD 60	518	-	DG 18	731	-	BE 65
	177	-	GG 75	338	-	BF 45	532	-	JA 83	757	-	BF 80
	181	-	JJ 52	341	-	BF 49	533	-	KZ 99	758	-	BF 82
	183	-	JA 92	382	-	BF 80	536	-	BE 92	760	-	BE 98

	On Return Passage: U 86 - 129 - 134 - 172 - 177 - 181 - 196 - 198 - 230 - 257 - 382 - 406 - 415 - 445 - 508 - 600 - 618 - 634 - 653 - 666 - 757 - 760.
	Entered Port: U 389 - 419 - Bergen.
	Sailed: - . -

II.	Air Reconnaissance: Fighter thrusts in outer Biscay.

III.	Reports on the Enemy:
	a)	On 19.8. U 183 fired a three fan at a freighter in GZ 2478, course 275⁰, speed 15 knots. 63 seconds later she heard 2 metallic impacts followed by a detonation after 6 minutes. Pistol failure suspected. On 24.8. boat sighted a flying boat over the rendezvous with U 177 in JJ 1925. On 1.9. in very bad weather, she pursued a freighter in JA 8549 without success. As the boat sent an unimportant radio message later, she was informed that is was superfluous and incorrect to transmit such long radio messages dealing with unimportant matters.
	b)	None.
	c)	1)	British units were located in: BF 4190, BF 7220.

- 160 -

		2)	U-boat sightings: 4 in unidentified position (probably in outer Biscay).
	d)	None.

IV.	Current Operations:
	a) -	b)	None.
	c)	U 214 and 621 did not meet at the time ordered. A new rendezvous has been appointed for 2000 on 4.9. in BE 7466.
	d)	1)	According to a report from Lisbon some Portuguese steamers frequently carry enemy passengers back and forth between Lisbon and America. Submarines have been reminded that neutral vessels are to be searched and any important enemy nationals liable to conscription are to be taken prisoner.
		2)	While passing through Biscay it is most important that boats remain undetected. They are to surface solely at night and only when the batteries need recharging. Since Hagenuk gear was introduced on our boats, enemy planes often search feverishly for them.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

4.September 1943.

I.	U 43	-	Op(EV)	U 188	-	JB 24	U 386	-	BE 98	U 618	-	BF 83
	86	-	BF 77	196	-	GZ 39	406	-	BF 77	621	-	Op(BE 76)
	107	-	Op(DB 60)	198	-	ER 37	415	-	CF 62	634	-	BF 78
	123	-	DF 54	214	-	BE 76	445	-	CG 18	645	-	BD 60
	129	-	BF 83	229	-	BF 75	460	-	CG 21	653	-	CG 17
	134	-	BF 80	230	-	CF 63	508	-	CF 57	666	-	BF 64
	161	-	ER 37	257	-	CF 55	515	-	BE 86	669	-	BE 94
	168	-	JB 43	260	-	BD 66	518	-	DF 38	731	-	BE 56
	170	-	BE 53	274	-	AE 62	532	-	JA 69	757	-	BF 80
	172	-	CF 56	305	-	BD 60	533	-	JA 73	758	-	BF 73
	177	-	GF 65	338	-	BE 44	536	-	BE 83	760	-	BF 77
	181	-	JJ 18	341	-	BF 47	584	-	BF 46
	183	-	JB 44	382	-	BF 80	600	-	BF 83

	On Return Passage: U 86 - 129 - 134 - 172 - 177 - 181 - 196 - 198 - 230 - 257 - 382 - 406 - 415 - 445 - 508 - 600 - 618 - 634 - 653 - 666 - 757 - 760.
	Entered Port: U 666 - 757 - St Nazaire.
	Sailed: U 610 - 641 - St. Nazaire; U 402 - La Pallice; U 275 - Bergen; U 963 - Drontheim; U 279 - 539 - Kiel.

II.	Air Reconnaissance:
	Searching for enemy submarine chaser formations in outer Biscay.

- 161 -

III.	Reports on the Enemy:
	a)-	b)	None.
	c)	1)	British units located in BE 6980, BF 7420.
		2)	U-boat sightings: BF 1945, CB 1226.
		3)	Attacks on submarines by planes: CA 8453, BB 8133.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	1)	CE 40 has been allocated as new approach point for U 515, 536 and 170. It is planned that they shall refuel from U 460 somewhere in this area.
		2)	BD 20 has been assigned as waiting area for U 731 and U 386.
		3)	On 5.9. at 1900 U 645 and U 260 are to meet in BD 5385 and U 305 and U 338 in BD 6155 in order to hand over the reference points that have been issued for the intended "Zaunkönig" operation. (Trans: type of torpedo). The boats have been ordered to keep W/T silence. When the transfer has been completed the following temporary attack areas will be manned: U 665 - BD 53, U 260 - BD 29, U 305 - BD 62, U 338 - BD 35.
			It is planned that they are to wait roughly in the area BD 50 - 60 until all the "Zaunkönig" boats have arrived. They are to arrange to move off to the patrol line so that they all arrive as near the same time as possible shortly before the expected convoy passes.
	c)	U 170 reported total breakdown of her "Hagenuk" gear (Trans: Radar interception gear). In order to avoid delaying the operation by at least 14 days, U 621, who as anti-aircraft boat is stationary in BE, is to hand over her "Hagenuk" gear. U 621 is to have her set replaced by an outward bound boat.
	d)	None.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

5.September 1943.

I.	U 43	-	Op(EV)	U 196	-	GZ 31	U 386	-	CF 32	U 600	-	BF 80
	86	-	BF 79	198	-	ER 37	402	-	BF 67	610	-	BF 67
	107	-	Op(DB 30)	214	-	BE 74	406	-	BF 79	618	-	BF 64
	123	-	DF 74	229	-	BE 96	415	-	CF 36	621	-	Op(BE 74
	129	-	BF 61	230	-	CG 40	445	-	CG 13	634	-	BF 84
	134	-	BF 80	257	-	CF 61	460	-	CF 23	641	-	BF 67


- 162 -

161	-	ER 37	260	-	BD 53	508	-	CF 56	645	-	BD 53
168	-	JB 25	274	-	AE 37	515	-	CF 37	653	-	CG 13
170	-	BE 66	275	-	AN 23	518	-	DF 53	669	-	BE 86
172	-	CF 62	279	-	AO	532	-	JB 42	731	-	BE 55
177	-	GF 34	305	-	BD 61	533	-	JA 59	758	-	BF 71
181	-	GZ 26	338	-	BD 61	536	-	BE 85	760	-	BF 78
183	-	JB 43	341	-	BE 66	539	-	AO	963	-	AF 59
188	-	KR 89	382	-	BF 80	584	-	BF 45

	On Return Passage: U 86 - 129 - 134 - 172 - 177 - 181 - 196 - 198 - 230 - 257 - 382 - 406 - 415 - 455 - 508 - 600 - 618 - 634 - 653 - 760.
	Entered Port: U 129 - Lorient; U 618 - St. Nazaire.
	Sailed: U 238 - Drontheim.

II.	Air Reconnaissance: None.

III.	Reports on the Enemy:
	a)	U 621 sighted an independent on easterly course at the rendezvous with U 214. After losing contact, pursuit was broken off without any success.
	b)	Own plane sighted a light cruiser at 1720 in BE 6699, course 340⁰, moderate speed.
	c)	1)	British units were located in: BE 6958, BF 1820, BF 4953, AL 5870, BF 1960.
		2)	U-boat sighting: CA 8264.
		3)	U-boat attacked or was attacked in BB 7551.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	U 460 was given CE 44 as approach point. She is to make her first transfer of fuel somewhere in this area.
	c)	1)	U 621 and U 214 did not meet. U 214 has been directed to proceed without her reserve tubes. (Trans: G.R.T.)
		2)	U 198 has transferred all her remaining stock of fuel to U 161 and is proceeding on her return voyage. U 161 is to operate off the coast of Brazil.
	d)	None.

V.	Reports of Success: None.

- 163 -

VI.	General:
	A submarine operating in the Mediterranean released an "Aphrodite" (Trans: radar decoy) off the coast of North Africa, and observed that the place where it was released was illuminated 30 minutes later with shore searchlights. This is probably the first known example of the successful use of "Aphrodite".

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

6.September 1943.

I.	U 43	-	Op(EV)	U 198	-	ER 37	U 386	-	BE 88	U 600	-	BF 80
	86	-	BF 84	214	-	BE 74	402	-	BF 83	610	-	BF 57
	107	-	Op(DB 30)	229	-	BE 95	406	-	BF 84	621	-	Op(BE 75)
	123	-	DE 99	230	-	CG 13	415	-	CG 15	634	-	BF 86
	134	-	BF 80	238	-	AF 58	445	-	BF 78	641	-	BF 82
	161	-	ER 37	257	-	CF 39	460	-	CF 24	645	-	BD 53
	168	-	KR 97	260	-	BD 53	508	-	CF 62	653	-	BF 77
	170	-	BE 68	274	-	AE 37	515	-	CF 51	669	-	BE 84
	172	-	CG 17	275	-	AF 76	518	-	DF 43	731	-	BE 46
	177	-	FU 74	279	-	AN 36	532	-	JB 25	758	-	BE 96
	181	-	GR 79	305	-	BD 61	533	-	JA 66	760	-	BF 84
	183	-	JB 25	338	-	BD 61	536	-	BE 87	963	-	AF 54
	188	-	KR 95	341	-	BE 64	539	-	AN 36
	196	-	GR 74	382	-	BF 80	584	-	BE 69

	On Return Passage: U 86 - 134 - 172 - 177 - 181 - 196 - 198 - 230 - 257 - 272 - 382 - 406 - 415 - 445 - 508 - 600 - 634 - 653 - 760.
	Entered Port: - . -
	Sailed: U 448 - 666 - St. Nazaire; U 952 - 378 - La Pallice.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	1)	On 2.9. U 386 was attacked during the night in BE 9668 by a plane using a searchlight. The "Hagenuk" gear did not show any location. Only further observations will enable us to say whether this was a chance sighting or whether the plane was working on a centimeter wave.
			U 386 also sighted a widely spaced search group in BE 9830 on 3.9.
		2)	U 515 made an unsuccessful daylight attack in CF 6470 on a convoy on southeasterly course, speed 10 knots. Boat was heavily depth-charged and had to turn back to port because of damage.
	b)	None.
	c)	1)	British units located in BE 5370, BF 1460.
		2)	U-boat sighting: BF 78.
	d)	None.

- 164 -

IV.	Current Operations:
	a)	None.
	b)	1)	U 161 has been given a free hand along the coast of Brazil to the S. and S.W. as far as the horizontal of GA 58. The boat has been given all information available on this area and on all the independents and convoys sighted recently. Operational Control suggested that boat should operate roughly on the route FD 74, FK 60 via FR 70 during the full moon and go close inshore during the new moon period.
		2)	The "Zaunkönig" boats (Trans: equipped with acoustic torpedoes) at their waiting position in BD have been given permission to make unrestricted attacks. However, they are to remain undetected, so will submerge for the greater part of the time. They have been ordered to use as little fuel as possible and keep W/T silence excepting when they have to transmit tactically important or distress signals. Independents are only to be reported if the submarine has definitely been detected.
	c)	U 621 handed over her "Hagenuk" gear (Trans: Radar interception gear) to U 170 on 9.9. in BE 7554. The gear will be replaced by an outward bound boat.
	d)	1)	U 134 is several days overdue. She has not replied to challenge from Control for position report. According to her own message she was attacked by a plane on 21.8. in CF 1284. As no further message has been received, it is probable that she was sunk.
		2)	U 43 had orders to lay mines off Lagos and then report task carried out. So far, this message has not been received, nor has she answered the request for her position report. The last news dates from 23.7., when U 403 made a fueling short signal and also reported for U 43 that she had passed through Biscay. It is assumed that U 43 was lost while on her passage south. However, no evidence is to hand.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

7.September 1943.

I.	U 86	-	BF 66	U 229	-	BE 86	U 386	-	BE 84	U 600	-	BF 80
	107	-	Op(DB 30)	230	-	CG 22	402	-	BF 81	610	-	BF 81
	123	-	DQ 26	238	-	AF 49	406	-	BF 85	621	-	Op(BE 75)
	161	-	ER 82	257	-	CG 15	415	-	CG 21	631	-	BF 54
	168	-	KR 93	260	-	BD 29	445	-	BF 79	634	-	BF 82
	170	-	BE 83	270	-	BF 91	460	-	CD 15	641	-	BF 73
	172	-	BF 61	274	-	AE 28	508	-	CG 17	645	-	BD 53
	177	-	FT 66	275	-	AF 70	515	-	CF 61	653	-	BF 70
	181	-	GQ 93	279	-	AN 24	518	-	DF 41	666	-	BF 67
	183	-	KR 97	305	-	BD 62	532	-	KR 89	669	-	BE 76
	188	-	KS 47	338	-	BD 38	533	-	JB 18	731	-	BE 52
	196	-	GQ 68	341	-	BE 56	536	-	BE 70	758	-	BE 94
	198	-	EH 95	378	-	BF 91	539	-	AN 31	760	-	BF 86
	214	-	BD 98	382	-	BF 64	584	-	BE 92	963	-	AF 42


- 165 -

	On Return Passage: U 86 - 134 - 172 - 177 - 181 - 195 - 198 - 230 - 257 - 275 - 382 - 406 - 415 - 445 - 508 - 515 - 600 - 610 - 634 - 653 - 760.
	Entered Port: U 172 - Lorient; U 382 - St. Nazaire; U 539 - Bergen.
	Sailed: U 270 - St. Nazaire; U 488 - Bordeaux.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a) -	b)	None
	c)	1)	British units were located in BE 9430, BE 9370, BF 4720, AL 5860.
		2)	U-boat sightings: BF 1791, BF 4881, 3 sightings in undecodable position, one probably in outer Biscay.
			British plane reported: "2305 submarine in BF 4597" at 2315: "Boat is still on the surface" and at 2325: "Boat on course of 280⁰, speed 10 knots". (U 402?).
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	1)	U 123 has been allocated as attack area a coastal strip 400 miles wide between the verticals of EO right edge and ED 90 left edge. Main emphasis on the areas off Georgetown and Trinidad. Boat has been given all information obtained from the situation reports sent by the boats who were last in the area.
		2)	The following attack areas have been allotted to the "Monsun" boats (Trans: based on Penang) that are to replenish from 8.9. onwards from "Brake" in KS 47: U 533 - Gulf of Aden, U 188 - Gulf of Oman, U 168 - Gulf of Cambay, U 532 - Southern tip of Peninsular India, U 183 off Mombassa.
			Boats have a free hand in this area according to the defences and shipping. U 533 may penetrate as far west as the entrance to the Red Sea at her own discretion. Surprisingly large successes may be possible there.
	c)	1)	Contrary to previous plans, the first fuel transfer is to be made from U 460 to some "Zaunkönig" boats, because U 170 and 536 have been delayed. Order: From 10.9 onwards, U 645, 305, 260, 338, 386 are to replenish their stocks of fuel and provisions to their maximum.
			After replenishing the fighting submarines are to return to their former waiting areas. U 386 is to man BD 39. Further transfer of fuel to U 669, 536 and 170 is planned in BD 87.

- 166 -

			These boats are approaching the grid square.
		2)	U 645 took over reference points from one of the "Zaunkönig" boats when they were with the tanker, and transferred reserve Engineer Officer to U 460. U 645 had not received messages with series numbers for 3rd and 4th September, thus she did not get the order to meet U 260, nor the instructions for her temporary attack area.
	d)	U 760 sent a request from CG 2371 for permission to enter a Spanish harbor as both her Diesels had failed and her battery needed charging. Boat was instructed to go to Vigo and appeal to the Spanish authorities on the grounds of casualty at sea. The German Military Attache has been informed. It is planned to send the necessary spare parts to Vigo by car or plane.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

8.September 1943.

I.	U 86	-	BF 82	U 230	-	BF 55	U 406	-	BF 82	U 610	-	BF 64
	107	-	Op(DB 30)	238	-	AF 49	415	-	BF 52	621	-	Op(BE 75)
	123	-	DQ 58	257	-	CG 13	445	-	BF 85	634	-	BF 80
	161	-	FC 22	260	-	Op(BD 20)	448	-	BF 57	641	-	BF 75
	168	-	KS 47	270	-	BF 67	460	-	CE 38	645	-	Op(BD 53)
	170	-	BE 81	274	-	AE 19	488	-	BF 91	653	-	BF 85
	177	-	FT 38	275	-	AN 23	508	-	CG 13	666	-	BF 57
	181	-	GQ 67	279	-	AN 24	515	-	CF 39	669	-	BE 70
	183	-	KR 93	305	-	Op(BD 62)	518	-	DE 64	731	-	BE 43
	188	-	KS 47	338	-	Op(BD 35)	532	-	KR 92	758	-	BE 86
	196	-	GQ 56	341	-	BE 57	533	-	JB 22	760	-	BF 83
	198	-	EH 65	378	-	BF 83	536	-	BE 70	952	-	BF 83
	214	-	CE 23	386	-	BE 76	584	-	BE 86	963	-	AE 63
	229	-	BE 58	402	-	BF 48	600	-	BF 80

	On Return Passage: U 86 - 177 - 181 - 196 - 198 - 230 - 257 - 275 - 406 - 415 - 445 - 508 - 515 - 600 - 610 - 634 - 653 - 760.
	Entered Port: U 230 - 415 - Brest; U 610 - St. Nazaire; U 275 - Bergen; U 760 - Vigo.
	Sailed: U 413 - Brest; U 68 - Lorient; U 220 - 422 - Bergen.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a) -	b)	None.
	c)	1)	A British unit was located in BF 4630.
		2)	U-boat sightings: BF 4851, CG 2216, at 2214 American unit reported submarine noises in DG 2328 and at 2230 she carried out 3 attacks. (No boat in the vicinity).
	d)	None.

- 167 -

IV.	Current Operations:
	a)	None.
	b)	After making their passage reports the "Zaunkönig" boats will take up the following waiting positions: U 731 = BD 28, U 750 = BD 66, U 341 = BE 14, U 229 = BE 41, U 584 = BE 47. After she has carried out refueling, U 260 will proceed to BD 26.
	c) -	d)	None.

V.	Reports of Success: None.

VI.	General:
	The unconditional surrender of the Italian Armed Forces has set in motion the measures to be taken against Italy. During the evening the Fuehrer ordered the announcement of key-word "Achse" which covered this eventuality. B.d.U. does not have to take any special steps. The Command Station is ready to take over the immediate operational control of the Mediterranean boats.
	At 2150 a radio message was received from F.d.U. Italy (Senior Officer Submarines, Italy):
	"B.d.U. Please take over operational control".
	Control was taken over.
	U 616 and 565 (the only boats at Toulon ready to leave port) were ordered to leave as soon as possible and make for La Spezia at maximum speed. They have been given the task of making unrestricted attacks on any Italian warships leaving harbor. At 0150 F.d.U. again took over operational control after he had transferred his Command Station to Frascati.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

9.September 1943.

I.	U 68	-	BF 55	U 220	-	AN 23	U 406	-	BF 80	U 584	-	BE 85
	86	-	BF 80	229	-	BE 54	413	-	BF 54	600	-	BF 52
	107	-	Op(DE 30)	238	-	AE 63	422	-	AN 23	621	-	Op(BE 75)
	123	-	DQ 75	257	-	BF 78	445	-	BF 82	634	-	BF 80
	161	-	FC 51	260	-	BD 67	448	-	BF 48	641	-	BE 96
	168	-	KS 47	270	-	BF 57	460	-	BD 94	645	-	BD 59
	170	-	BE 75	274	-	AE 17	488	-	BF 94	653	-	BF 82
	177	-	FM 88	279	-	AN 23	508	-	CG 22	666	-	BF 81
	181	-	GQ 27	305	-	BD 67	515	-	CG 13	669	-	BE 70
	183	-	KS 47	341	-	BE 46	518	-	DE 57	731	-	BE 41
	188	-	KS 47	378	-	BF 81	532	-	KS 47	758	-	BE 84
	196	-	GQ 24	386	-	BE 74	533	-	KR 95	952	-	BF 49
	198	-	EH 36	402	-	BE 69	536	-	BE 75	963	-	AE 37
	214	-	CF 75	338	-	BD 64

	On Return Passage: U 86 - 177 - 181 - 196 - 198 - 257 - 406 - 445 - 508 - 515 - 600 - 634.
	Entered Port: U 600 - Brest.
	Sailed: U 377 - 603 - Brest; U 470 - 761 - 966 - Kiel; U 275 - Bergen.

- 168 -

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	None.
	b)	Own plane spotted south bound convoy at 0815 in AM 73; at 1305 a heavy cruiser with a destroyer stopped in AE 1849.
	c)	1)	British unit located in BF 4590.
		2)	U-boat sightings: At 1455 a British plane reported a submarine on a course of 90⁰ off Biscay on 9⁰ 40' West. One sighting in unidentified position.
	d)	None.

IV.	Current Operations:
	a) -	b)	None.
	c)	U 198 suggested rendezvous on 12.9. in DG 8355 with U 214 to take over her second Engineer Officer. The boats were informed that they will have to expect enemy air activity in this area as well.
	d)	None.

V.	Reports of Success: None.

VI.	General:
	Enemy Anti-submarine measures in Bay of Biscay.
	1.	Air.
		Anti-submarine planes fly west of 8⁰ West to at least 20⁰ West, especially between longitude 9 and 13⁰ West evenly distributed over the latitudes of the Bay of Biscay. There is no fixed system for patrols. The number of planes operating has increased (60-70 daily). Despite this, hardly a submarine has been spotted or attacked since "Wanze" gear was installed in place of "Metox" gear. (Trans: Radar interception gear). Thus, the anti-submarine defence situation has completely changed. The boats' main task is to steal through without being detected. No time has been observed when the defences are particularly active, the same number of planes operate during the day and night, at the moment they appear to be slightly less during the first quarter of the night (hours of moonlight).
		Method of attack: After a submarine has been spotted the plane maintains contact without being detected and calls up other planes, they then make a combined attack, as this facilitates overpowering the increased anti-aircraft armament carried by the boats. If the plane is detected, it immediately makes a determined attack with a stick of 6 - 10 bombs roughly across the submarines' course.

- 169 -

	2.	Sea.
		About 4 groups of sub-chasers, each consisting of 3 destroyers or anti-submarine vessels, remain constantly at sea west of 9⁰ West. They cooperate with the planes and sometimes cruisers and aircraft carriers join them. They have been driven further west through attacks by our own planes, at present their station is not known. Enemy submarines are suspected in the area of the outer points round the approach routes.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

10.September 1943.

I.	U 68	-	BF 40	U 229	-	BE 42	U 406	-	BF 80	U 603	-	BF 54
	86	-	BF 80	238	-	AE 68	413	-	BF 46	621	-	Op(BE 75)
	107	-	Op(DB 30)	257	-	BF 84	422	-	AF 76	634	-	BF 80
	123	-	DP 99	260	-	BD 91	445	-	BF 80	641	-	BE 95
	161	-	FC 81	270	-	BF 49	448	-	BF 47	645	-	BD 91
	168	-	KS 47	274	-	AD 52	460	-	BD 91	653	-	BF 80
	170	-	BE 75	275	-	AF 87	470	-	AO	666	-	BF 72
	177	-	FM 54	279	-	AF 76	488	-	BF 86	669	-	BE 70
	181	-	GQ 12	305	-	BD 91	508	-	BF 79	731	-	BD 38
	183	-	KS 47	338	-	BD 91	515	-	BF 77	758	-	BE 82
	188	-	KS 47	341	-	BE 17	518	-	DE 48	761	-	AO
	196	-	GG 97	377	-	BF 55	532	-	KS 47	952	-	BF 48
	198	-	DT 74	378	-	BF 72	533	-	KS 47	963	-	AE 28
	214	-	CE 99	386	-	BD 91	536	-	BD 96	966	-	AO
	220	-	AF 76	402	-	BE 68	584	-	BE 80

	On Return Passage: U 68 - 177 - 181 - 196 - 198 - 257 - 406 - 445 - 508 - 515 - 634 - 653.
	Entered Port: U 389 and 841 transferred from Bergen to Drontheim.
	Sailed: - . -

II.	Air Reconnaissance: None.

III.	Reports on the Enemy:
	a)	On 7.9. U 584 successfully warded off a plane that attacked in BF 7114 (night attack with searchlight but without location). Boat also reported from BE 8611 that her "Hagenuk" gear had failed and could not be repaired.
	b)	None.
	c)	1)	U-boat sightings: BF 7856, BE 6991.
		2)	British unit was located in BF 4480.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	U 402, 641, 448, 952, 666, 378, 270, 430 [typo 413] have been ordered to adjust their speed so that they reach AK 63 by the evening of 20.9. U 603 and 377 are to be at AK 69 by the same time.

- 170 -

		These are the"Zaunkönig" boats. (Trans: boats with acoustic torpedoes) that are outward bound. On 21.9. they are to take up their positions with other boats approximately in the area named.
	c)	1)	As a submarine was sighted during the day, boats have again been instructed to take heed of the order dealing with cruising at night when in Biscay.
		2)	U 107 reported that she had successfully carried out the mine laying off Charleston. Despite constant attempts, she had not been able to send this report earlier. Operational Control had already given the boat up as lost.
		3)	At 1200 on 12.9., U 758 has a rendezvous with U 621 in BE 7312 to hand over an equalizing spring.
	d)	Because of drift ice fields and major damage, U 274 has had to turn back from AD 2390. Boat has been ordered to proceed through the Denmark Straits into the Atlantic.
		The Commander has been requested to report on his return why he chose a course so far to the north. Boats following have been instructed to go closer to the coast of Iceland.

V.	Reports of Success:

VI.	General:
	The following has been radioed to the boats:
	Even in mid-Atlantic enemy air patrols must always be expected. Planes fly high and come in at roughly 45⁰. If possible refuel at night. When servicing guns in preparation for anti-aircraft activity, set them at null. (Based on experiences of U 172).

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

11.September 1943.

I.	U 68	-	BF 45	U 229	-	BE 41	U 406	-	BF 80	U 603	-	BF 49
	86	-	BF 52	230	-	AE 83	413	-	BF 45	621	-	Op(BE 75)
	107	-	BE 46	257	-	BF 85	422	-	AF 71	634	-	BF 80
	123	-	BE 29	260	-	DB 91	445	-	BF 80	641	-	BE 86
	161	-	Op(FK 10)	270	-	BF 44	448	-	BE 69	645	-	BD 91
	168	-	KS 47	274	-	AE 12	460	-	BD 91	653	-	BF 52
	170	-	BE 75	275	-	AF 76	470	-	AN 36	666	-	BE 93
	177	-	FM 18	279	-	AF 72	488	-	BF 84	669	-	BE 70
	181	-	GG 84	305	-	BD 91	508	-	BF 85	731	-	BD 29
	183	-	KS 47	338	-	BD 91	515	-	BF 76	758	-	BE 81
	188	-	KS 47	341	-	BE 14	518	-	DD 92	761	-	AN 36
	196	-	GG 57	377	-	BF 54	532	-	KS 47	952	-	BE 69
	198	-	DT 11	378	-	BE 93	533	-	KS 47	963	-	AE 19
	214	-	DG 61	386	-	BD 91	536	-	BD 98	966	-	AN 36
	220	-	AF 71	402	-	BE 59	584	-	BE 73

	On Return Passage: U 86 - 107 - 177 - 181 - 196 - 198 - 257 - 274 - 406 - 445 - 448 - 508 - 515 - 634 - 653.

- 171 -

	Entered Port: U 86 - 653 - Brest.
	Sailed: U 282 - 540 - 762 - Kiel.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	U 402 reported her experiences when passing through Biscay: No location so far. Several planes approached in BF 48, one was shot down.
	b)	Own plane spotted a destroyer at 1716 in BF 4735, course 190⁰, moderate speed, escorted by 6 Mosquitoes.
	c)	1)	British units were located: BF 4480, BF 1460, BE 3940, BE 3960, BE 9921, BE 3939, BF 1750. According to Radio Intercept Intelligence there was an enemy unit in BF 4458, course 270⁰, speed 21 knots, probably enemy anti-submarine forces in BF 4467 and 4244.
		2)	U-boat sightings: EE 8444 (U 123).
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	1)	U 238 and 422 are to proceed at cruising speed in such a manner that they reach square AK 3270 by the evening of 20 September. U 275, who was originally to pass through the Denmark Straits, is proceeding via the Iceland Passage to save time and is to try to reach the square named at the same time.
		2)	The operational area for U 123 has been extended to the north and east without any limits, provided that the "Hagenuk" gear has not been repaired in the meantime.
	c)	As the supply routine may have been compromised by the Italian vessel "Eritrea" which escaped from Penang, the "Monsun" boats (Trans: subs. based in Penang), and "Brake" (Trans: supply vessel) have been ordered to move away to the south or, if the weather prevents this, to the northeast.
	d)	U 634 has not sent her arrival report although this has been expected for days. The boat last reported on 29.8. from CF 5316: several smoke plumes on a bearing of 30⁰, chased by corvette to the N.W.
		As nothing more has been heard of U 634, it must be assumed that the boat was destroyed by the corvette or by formations of sub-chasers in the vicinity. Loss is probable.

V.	Reports of Success: None.

- 172 -

12.September 1943.

I.	U 68	-	BF 44	U 238	-	AE 82	U 406	-	BF 80	U 584	-	BE 81
	107	-	DE 52	257	-	BF 85	413	-	BE 66	603	-	BF 48
	123	-	Op(EE 50)	260	-	BD 91	422	-	AE 69	621	-	Op(BE 73
	161	-	Op(FK 40)	270	-	BE 65	445	-	BF 80	641	-	BE 85
	168	-	KS 47	274	-	AE 16	448	-	BF 64	645	-	BD 91
	170	-	BE 75	275	-	AF 72	460	-	BD 91	666	-	BE 92
	177	-	FE 79	279	-	AF 47	470	-	AN 31	669	-	BE 70
	181	-	GG 45	282	-	AO	488	-	BF 78	731	-	BD 28
	183	-	KS 47	305	-	BD 91	508	-	BF 86	758	-	BE 73
	188	-	KS 47	338	-	BD 91	515	-	BF 55	761	-	AN 31
	196	-	GG 41	341	-	BE 14	518	-	DD 83	762	-	AO
	198	-	DG 83	377	-	BF 45	532	-	KS 47	952	-	BE 68
	214	-	DG 83	378	-	BE 92	533	-	KS 47	963	-	AE 17
	220	-	AE 69	386	-	BD 91	536	-	BD 97	966	-	AN 31
	229	-	BE 41	402	-	BE 58	540	-	AO

	On Return Passage: U 107 - 177 - 181 - 196 - 198 - 257 - 274 - 406 - 445 - 448 - 508 - 515 - 634.
	Entered Port: U 515 - Lorient; U 448 - St. Nazaire.
	Sailed: U 610 - St. Nazaire.

II.	Air Reconnaissance: Fighter patrols in outer Biscay and reconnaissance for convoys.

III.	Reports on the Enemy:
	a)	None.
	b)	Own planes spotted a convoy of 35 merchant ships (2 - 8,000 GRT) and 8 escorts at 1835 in BE 8284. Moderate speed, course 200⁰. Then at 1855 a troop transport (10,000 GRT), 1 escort, in BE 8238, course 180⁰, speed 12 knots. Air escort for both groups.
	c)	1)	British unit located in BE 6860.
		2)	U-boat sightings: DD 4438 (U 518), EO 1953 (U 123), BB 7694 and a sighting without position report.
		3)	At 1500 a plane attacked a submarine in DJ 4557 (?). According to a further report, a cruiser was attacked by a submarine in the same position.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	As U 669 is missing (see paragraph d) U 536, who was also briefed, has been ordered to carry out operation "Kiebitz". Contrary to previous plan, the boat is not to refuel.
	c)	1)	The "Zaunkönig" boats (Trans: equipped with acoustic torpedoes), U 645, 338, 386, 305 and 260 have refueled once from U 460. "Zaunkönig" boats are proceeding to

- 173 -

			the north to the waiting positions allocated; U 460 is cruising farther west to refuel U 170.
		2)	U 518, 123 and 161 should reach their operational areas about now, they are to refuel when homeward bound in DG 10.
	d)	Despite challenge from Control U 669 has not sent her passage report which is 5 days overdue. Hence she must be presumed lost. On 7.9. a British plane reported a surfaced submarine on a westerly course in BF 4597. This may have been U 669 and she was probably destroyed by this plane or forces that it called up.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

13.September 1943.

I.	U 68	-	BE 65	U 229	-	BE 41	U 386	-	BD 91	U 584	-	BE 48
	107	-	DE 34	238	-	AE 84	402	-	BE 54	603	-	BF 71
	123	-	Op(EE)	257	-	BF 80	406	-	BF 80	610	-	BF 67
	161	-	Op(FK 70)	260	-	BD 91	413	-	BE 65	621	-	Op(BE 73)
	168	-	KS 47	270	-	BE 28	422	-	AF 68	641	-	BE 80
	170	-	BE 70	274	-	AF 58	445	-	BF 80	645	-	BD 91
	177	-	FE 47	275	-	BE 69	460	-	BD 91	666	-	BE 91
	181	-	GF 38	279	-	AE 65	470	-	AN 24	731	-	BD 28
	183	-	KS 47	282	-	AN 36	488	-	CG 21	758	-	BE 73
	188	-	KS 47	305	-	BD 91	508	-	BF 80	761	-	AN 24
	196	-	GF 35	338	-	BD 91	518	-	DD 76	762	-	AN 36
	198	-	DG 83	341	-	BE 14	532	-	KS 47	952	-	BE 67
	214	-	DG 83	377	-	BF 44	533	-	KS 47	963	-	AD 28
	220	-	AE 68	378	-	BE 91	536	-	BD 88	966	-	AN 24
							540	-	AN 36

	On Return Passage: U 107 - 177 - 181 - 196 - 198 - 257 - 274 - 406 - 445 - 508.
	Entered Port: U 274 - Drontheim; U 470 - 761 - 966 - Bergen.
	Sailed: U 309 - 419 - Bergen.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	U 641 reported: Have passed 20⁰ West, no location while navigating Biscay, 8.9. sighted group of sub-chasers in BF 4888.
	b)	Own planes sighted a merchant vessel (10,000 GRT), 3 escorts, at 0945 in CG 1479. Course probably 155⁰. Then at 1205 in CF 3383 a convoy of 8 merchant vessels, 1 cruiser, 6 escorts, 1 reconnaissance plane.
	c)	1)	British units were located: BE 9860, BF 4750, BE 9790, AM 2440.
		2)	U-boat sightings: DD 4283 (U 518?).
	d)	None.

- 174 -

IV.	Current Operations:
	a)	The "Zaunkönig" boats have been given the following instructions for the first new convoy operation.
		A.
		1.	Approach:
			Essential to remain unseen during the approach as well as while in patrol line, but at the same time no favorable opportunity for an attack must be let slip. Picking up the convoy, warding off the enemy and a successful operation depend on catching the enemy unawares. Now that the Mediterranean offensive is in full swing, convoys in the Atlantic may well have scanty escort. The Morocco operation is a good example.
		2.	Operation:
			Smooth working during the different stages as set out in "Notes on Convoy Attacks" (Gedanken über Geleitzugkampf") is most important. To begin with, try to make the most of a surprise attack. Do not switch to open attack until the short signal has been received. Then the elimination of the escorting forces must be the main concern. The destruction of a few destroyers will have a demoralizing effect on the enemy and also simplify attacks on the ships. When hauling ahead on the surface, never form groups of more than 2 boats. Boats must aim at equal distributions round the convoy in order to split up the enemy defences.
		3.	I expect every Commander to make the most of every chance to fire at destroyers. From now on the boat is the attacker, fire first, then submerge to great depth.
		B.	In a further radio message C-in-C Navy ordered:
			"After an interval lasting for months you will once again wage submarine war in the North Atlantic, the most important theater. You have been provided with new weapons and gear for this task. Events in Biscay have shown that in the field of radar detection the situation has changed materially in your favor. All the essentials for a successful campaign are to hand. I am sure that you will take up this challenge with the old fighting spirit of the submariner, for this struggle is decisive for our nation's future. The Fuehrer is watching every phase of your struggle. Attack, follow up, sink.
	b)	None.
	c)	1)	So far, U 198 and 214 have not met. After both boats have reported, a new rendezvous will be arranged in DG 9154.
		2)	To date, U 621 has not reached her rendezvous with U 758 in BE 7312. When requested to report, U 170 sent a garbled message which probably means that the transfer of the "Hagenuk" gear as ordered has not yet taken place because of unfavorable weather. Thus, U 621 is probably still in BE 7554.

- 175 -

			To clear up the situation, orders have now been given that U 621 is to proceed immediately to U 758 and that U 170 is to cruise farther to BD 8855. She is to replenish fuel and provisions to her maximum capacity from U 460 in this position. A new "Hagenuk" set is being carried by U 68, who is at present in BE 60.
		3)	The "Monsun" boats U 168, 188, 532, 533, 183 have been well supplied with fuel and provisions by "Brake". The boats are proceeding north to the attack areas ordered. (See War Diary for 7.9.).
	d)	None.

V.	Reports of Success: None.

VI.	General:
	Argentine ships are running between Argentina and New York to fetch vital supplies. They follow a coast-wise course. For over-riding political reasons Argentine ships, even when in the blockade area, are not to be stopped for examination or sunk.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

14.September 1943.

I.	U 68	-	BE 64	U 229	-	BE 41	U 386	-	BD 63	U 540	-	AN 31
	107	-	CD 77	238	-	AE 79	402	-	BE 46	584	-	BE 47
	123	-	Op(EE)	257	-	BF 61	406	-	BF 80	603	-	BE 92
	161	-	Op(FQ 30)	260	-	BD 53	413	-	BF 41	610	-	BF 57
	168	-	KS 15	270	-	BE 19	419	-	AF 87	621	-	Op(BE 73)
	170	-	BE 70	275	-	AE 68	422	-	AE 67	641	-	BE 80
	177	-	FD 38	279	-	AE 64	445	-	BF 80	645	-	BD 53
	181	-	GF 31	282	-	AN 31	460	-	BD 88	666	-	BE 53
	183	-	KR 33	309	-	AF 87	488	-	CG 12	731	-	BD 28
	188	-	KR 38	305	-	BD 62	508	-	BF 61	758	-	BE 73
	196	-	FU 76	338	-	BD 38	518	-	DD 97	762	-	AN 31
	198	-	DG 83	341	-	BE 14	532	-	KS 24	952	-	BE 59
	214	-	DG 67	377	-	BE 66	533	-	KR 36	963	-	AD 55
	220	-	AE 67	378	-	BE 83	536	-	BD 79

	On Return Passage: U 107 - 177 - 181 - 196 - 198 - 257 - 406 - 413 - 445 - 508.
	Entered Port: U 257 - 508 - Lorient; U 540 - Bergen.
	Sailed: U 336 - Brest; U 223 - 267 - 448 - St. Nazaire; U 281 - 426 - 842 - 844 - Kiel; U 539 - 643 - Bergen.

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	U 378 wanted to make first "Zaunkönig" torpedo attack on destroyer in BE 56, but was not able to fire because of tube-runner, pity!

- 176 -

	b)	Own plane sighted a destroyer, 2 escorts and 1 light cruiser at 1150 in BE 9714. No course given.
	c)	1)	British units were located in BF 7160, AL 6660.
		2)	On 14.9. Colombo transmitted submarine warning for LB 2648.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	U 518 has taken up her position in her attack area - between DA 59 - DC 49 - DN 49 and DL 47. Boat has been given all particulars of shipping and anti-submarine defences that have been contained in the latest situation reports.
	c)	1)	U 170 reported that she had taken over the "Hagenuk" gear from U 621. (Trans: radar identification gear). As ordered, U 170 is proceeding to the tanker in BD 8855, U 621 to BE 7312 to meet U 758.
		2)	U 214 transferred Engineer Officer to U 198. U 214 is proceeding farther to lay mines off Colon, U 198 is continuing her homeward voyage.
	d)	On 11.9. U 963 ran under drift ice in AD 2663 while navigating the Denmark Straits. Major damage necessitated the boat's return. B.d.U. has given orders that no more boats are to enter the Atlantic by the Denmark Straits until ice conditions have been investigated.

V.	Reports of Success: None.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

15.September 1943.

I.	U 68	-	BE 56	U 238	-	AE 78	U 406	-	BF 64	U 603	-	BE 91
	107	-	CD 76	260	-	BE 26	413	-	BF 45	610	-	BF 49
	123	-	Op(EE)	270	-	BE 15	419	-	AF 76	621	-	Op(BE 73)
	161	-	Op(FQ 30)	275	-	AE 67	422	-	AE 83	641	-	BE 46
	168	-	KH 74	279	-	AE 53	426	-	AO	643	-	AN 23
	170	-	BD 75	281	-	AO	445	-	BF 64	645	-	BD 53
	177	-	ES 97	282	-	AN 29	448	-	BF 67	666	-	BE 43
	181	-	FU 71	305	-	BD 62	460	-	BD 88	731	-	BD 28
	183	-	KG 75	309	-	AF 76	488	-	CG 11	758	-	BE 73
	188	-	KG 87	336	-	BF 55	518	-	DD 87	762	-	AN 29
	196	-	FU 47	338	-	BF 35	532	-	KH 79	842	-	AO
	198	-	DG 91	341	-	BE 14	533	-	KG 85	844	-	AO
	214	-	DG 91	377	-	BE 64	536	-	BD 77	952	-	BE 55
	220	-	AE 82	378	-	BE 55	539	-	AN 23	963	-	AF 12
	223	-	BF 67	386	-	BD 39	584	-	BE 47
	229	-	BE 41	402	-	BE 42

	On Return Passage: U 107 - 177 - 181 - 196 - 198 - 406 - 413 - 445 - 963.
	Entered Port: U 406 - 445 - St. Nazaire; U 282 - 762 - Bergen.
	Sailed: U 264 - St. Nazaire.

- 177 -

II.	Air Reconnaissance: Fighter patrols in outer Biscay.

III.	Reports on the Enemy:
	a)	None.
	b)	Own plane reported 3 enemy destroyers in BF 4788 at 1620, course 260⁰.
	c)	Enemy units located in BE 6830, AL 6550, DH 6346, BF 4778.
	d)	None.

IV.	Current Operations:
	a)	None.
	b)	1)	In accordance with order issued by C-in-C Navy (Ob.d.M.) forbidding any more boats to use the Denmark Straits for a time, U 279 and 539 have been instructed to enter the Atlantic by AE 80 (Iceland Passage).
		2)	U 488 has been allocated EH 10 as new approach point. It is planned that the boats leaving the Capetown area shall replenish their provisions somewhere in this area.
		3)	The "Zaunkönig" boats and some other boats that have left home waters have been combined to form Group "Leuthen". The Group has been ordered to take up their positions in a patrol line from AK 3441 to AL 4762 at 2000 on 20.9. They are to be 17 miles apart in the following sequence: U 275, 422, 341, 260, 386, 338, 731, 238, 305, 270, 645, 402, 584, 229, 666, 641, 952, 378, 758, 377, 603.
			In order to avoid compromising the patrol line, instructions have been given by reference points, which were given in sealed envelopes to the Commanders when they left port.
			An "ONS" convoy is expected to arrive during the afternoon of 21.9. But it may arrive later, as the dead reckoning for the convoys must not be relied upon absolutely because the data was scanty. As no convoys have been attacked in the North Atlantic since May 1943, it may be assumed that the enemy is again using the shortest route between America and England. This has also been suggested by different reports.
			The patrol line ordered lies on the Great Circle but is beyond the range of the constant air reconnaissance over which radar watch is maintained from England.
	c)	U 621 took over the requested equalizing spring from U 758. U 621 was ordered to meet U 68 in BE 8118. U 68 reported the meeting by short signal.
	d)	None.

V.	Reports of Success: None.

- 178 -

VI.	General:
	After the "Monsun" boats (Trans: based in Penang) had refueled and were cruising northwards to their operational areas the Japanese Navy requested that they should not be committed farther north than 17 South, as Japanese boats are operating there at present.
	German submarines have been definitely forbidden to attack submarines, but are proceeding on their course as ordered by C-in-C Navy. The operation will be carried out according to plan.
	The Japanese Navy has been informed. In order to avoid any incidents a new recognition signal is to be arranged mutually.


		For B.d.U.,
		Chief of Operations Division.
		(Signed): GODT.

- 179 -

German Navy High Command

Second Division Naval War Staff/B.d.U. Ops.

Ref. 398.

10.September 1943.

U-boats as of 1 September 1943.

In Commission on 1 August 1943 :		402
Commissioned during August		17
		419
Losses during August: On Operations		24
In Home Waters		1
		394
Paid off: (U 34)		1
		393

In addition, foreign submarines:		8
Previously handed over to Italians		9
Previously handed over to the Japanese:		1

Losses during August :
Atlantic:	Type VII b/c:	U 383, 706, 454, 572, 604, 647, 359, 664, 615, 84, 486, 403, 134.	13
	Type IX b/c:	U 106, 185, 525, 523, 43.	5
	Type XB:	U 117	1
	Type IX D2:	U 199, 197, 847	3
	Type XIV:	U 489	1

Mediterranean:	Type VII C:	U 458	1
Home Waters:	Type VII C:	U 670	1
			25

See enclosure for details of losses.

III.

Distribution of boats:

	II	VIIa	VIIb/c	VIId	VIIf	IXb/c	IXD	IXD2	Xb	XIV	Total

On Operations:	6	-	119	2	-	28	2	5	1	2	165
On Trials:	-	-	110	-	4	26	-	7	1	1	149
Training:	33	3	39	-	-	4	-	-	-	-	79

	39	3	268	2	4	58	2	12	2	3	393

- 180 -

During August :

The following joined the operational boats:	+	13
Total number of boats decreased by:	-	9
Number of operational boats decreased by:	-	11
Number on trials increased by:	+	3
Training boats decreased by:	-	1

IV.

Distribution of operational boats on 1.9.1943:

Atlantic	124
Mediterranean	13
Northern Waters	22
Black Sea	6
	165

During August the following were in the Atlantic:

Daily average at sea:	59
Of these, in operational areas:	10
Cruising:	49
Of these returning:	30

VI.

During August the following left port for the Atlantic:

From home waters	2
From France	26

for B.d.U.

Chief of Operational Division

(Signed): GODT.

- 181 -

Enclosure for Second Division of Naval War Staff/

B.d.U. Ops. Ref. 398

Enclosure for II (Details of losses):

U 383	Experienced boat. Last message 1.8. reporting air attack west of Biscay. Boat probably sunk.

U 106	Experience boat, young Commander. Sunk by plane in Biscay on 2.8.

U 706	Experienced boat. Last message 2.8. reporting plane in Biscay. Probably sunk by air attack.

U 454	Old experienced boat. Last message 30.7. from Biscay. Probably lost through air attack in Biscay.

U 572	Experienced boat. Last message 3.8. when E. of Lesser Antilles. Probably sunk by air attack.

U 604	Experienced boat. Sunk by plane east of Bahia on 11.8.

U 489	First cruise. Last message from N.W. Trondheim on 28.7. Probably sunk by patrols in Iceland Passage.

U 647	As U 489.

U 117	Experienced boat. Last message sent 6.8. west of Azores. Probably sunk by carrier-borne planes.

U 199	First cruiser, old Commander. Last message sent 24.7. south of Rio de Janeiro. No clues to loss.

U 359	Experienced boat. Last message 12.7. S.W. of Canaries. No clues to loss.

U 664	Experienced boat. Last message 9.8. West of Azores. Probably sunk by carrier-borne aircraft.

U 615	Experienced boat. Last message 28.7. from Caribbean. No clues to loss.

U 525	Experienced boat. Last message 3.8. from Biscay. No clues to loss.

U 197	First cruise, old Commander. Last message 20.8. from Indian Ocean. Lost through air attack.

U 84	Old, experienced boat. Last message 7.8. when east of Florida. Probably sunk by naval forces.

U 468	Experienced boat. Last report from Biscay on 13.7. No clues to loss.

U 523	Experienced boat. No message. Probably sunk by Biscay patrol.

U 185	Experienced boat. Last message 11.8. S.W. of Sierra Leone. No clues to loss.

- 182 -

U 847	First Cruise, old Commander. Last message 9.8. when S.E. of Greenland. Probably sunk by plane.

U 403	Experienced boat. Last report 23.7. from Biscay. Cause of loss unknown.

U 458	Experienced boat. Last message 22.8. from approaches to Straits of Messina. No clues to loss.

U 43	Experienced boat. Last message 23.7. when west of Biscay. No clues to loss.

U 134	Experienced boat. Last message 21.8. when N.E. of Azores. Probably sunk by plane.

U 670	While training rammed and sunk by the target vessel during a night shoot in the Baltic on 20.8.

- 183 -