U-230 1st War Patrol

Translation by Jerry Mason with help from Andi Forster

Departed	Date	Arrived	Date	Days at Sea
Bergen	11 Feb 1943	Lorient	31 March 1943	49

 

Click the icon to download a KMZ file displaying the U-boat track, significant events and locations for this patrol.  You must have Google Earth loaded on your computer to view this file.  Download Google Earth here

 

Ships Attacked
Date	KTB Time	Position	Ship	Tons	Nationality	Convoy
7 Mar 43	02.10	56°15'N, 37°25'W	EGYPTIAN	2,868	British	SC-121
			Total = 2,868
Note:  The positions in the table above and in the Google Earth patrol summary are derived from the KTB and in many cases do not match those set forth in authoritative references such as Jürgen Rohwer, Axis Submarine Successes of World War Two or the Uboat.net website.  The goal here is to present the picture relative to the U-boat and not the absolute position that the ship was attacked or sank.

---

				K  r  i  e  g  s  t  a  g  e  b  u  c  h
				"  U  230  "
				for the period from 24.10.42 to 3.2.43.
				Kommandant:  Kapitänleutnant Siegmann
				Kptlt. and Kommandant
				© U-boat Archive 2023 - all rights reserved

Click the flag to view the above page from the original German KTB

	- 1 -
		24.10.42	Kiel, Iltisbrücke	Commissioning.
		25. - 31.10.42	Kiel, and Western Baltic	U.A.K. testing.
		01. - 03.11.42	Kiel, Germaniawerft	Installation of the Fu.M.G.
		04. - 10.11.42	Kiel, Western Baltic	Continued U.A.K. testing.
		11.11.42	Western and Central Baltic	AK.cruise Kiel - Sansnitz
		12.11.42	Central Baltic	Transit from Sassnitz to Rönne.
		12. - 14.11.42	Rönne	Listening by U.A.G.-Schall.
		14. - 15.11.42	Central and Eastern Baltic	Transit to Danzig.
		16.11.42	Danzig Bay	Testing by U.A.G. I.
		17. - 20.11.42		Testing by T.E.K.
		21. - 25.11.42	Hela and Eastern Baltic	Training by the Agru-Front.
		25.11.42	Eastern Baltic	Transit to Pillau.
		26. - 29.11.42	Eastern Baltic	Torpedo firing with the 26.U-Flottille.
		30.11. - 01.12.42		Transit to Königsberg for installation of the radio system at Schichauwerft.
		01.12.42		Transit from Königsberg to Pillau.
		02.12.42	Eastern Baltic	Transit to Gotenhafen to the 27.U-Flottille.
		03.12. - 15.12.42	Eastern Baltic	Training with the 27.U-Flottille.
		15.12.42	Eastern Baltic	Transit from Gotenhafen to Pillau to the 26.U-Flottille.
		16. - 21.12.42	Eastern Baltic	Torpedo firing with the 26.U.Flottille.

	- 2 -
		21.12. - 22.12.42	Eastern, Central and Western Baltic	Transit from Pillau to Kiel to the 5.U-Flottille.
		23.-24.12.42	Kiel, Tirpitzhafen
		08.00	U-boat pier
		24.12.42	Kiel, Germaniawerft	Final adjustments and overhaul.
		09.00 to
		24.01.43
		25.01.43	Western Baltic	Sea trial.
		26.01.43	Kiel, Tirpitzhafen	Fu.M.G. testing and fuel oil loading.
		27.01. - 30.01.43	Tirpitzhafen, Germaniawerft	Begin equipping for the Front.  Torpedo loading, followed by shift to Germaniawerft to repair the Fu.M.G.
		30.01.42	Kiel, Tirpitzhafen	Fu.M.G. testing.
		01.02.43	Kiel	End of torpedo loading, degaussing, munitions and stable provisions loading.
		02.02.43	Kiel	Magnetic compass calibration, oxygen loading and Radio Direction finder calibration.
		03.02.43	Kiel	Fresh provisions loading and final trim test.
		04.02.43	Kiel	Put to sea for first war patrol.

			K  r  i  e  g  s  t  a  g  e  b  u  c  h
				"U  230"
			Kommandant:  Kptlt.  S  i  e  g  m  a  n  n
				Beginning:     4.2.43
				Ending:       31.3.43

	- 1 -
		04.02.43
		08.07	Kiel, Tirpitz Harbor	Cast off on first war patrol.
				Independent transit to Point Red 15.
		12.00	AO 7498
			ENE 1, Sea 0, overcast
		13.00		Taken under escort by M 1906 with U-638 and U-359.
				Transit on restricted route in bottom mine convoy.
				Senior Kommandant U-638 (Bernbeck)
		16.00	AO 7544
		20.00	AO 7433	Day's run:  32 nm.
		05.02.43	Great Belt
		04.00	AO 8476
		04.28		Anchored due to fog.
		06.55		Weighed anchor.
		08.00	AO 4876
		10.01		Anchored due to fog.
		12.00	AO 4876	Day's run:  129.4 nm.
			W 1, Sea 1, fog, 1014 mb
		13.32		Weighed anchor, transit in convoy continued.
		16.00	AO 4846
		20.00	AO 4575
			AO 4493	Changed escort, released ground mine escort.
		06.02.43
		00.00	AO 4439	Anti-aircraft escort by a patrol boat.
		04.00	AO 4421
		08.00	AN 3394
		09.11	AN 3388	Test dive.
		09.30		Surfaced.
		12.00	AN 3622	Day's run:        1.4 nm.
			SW 4-5, Sea 6-7, freshening, rain showers	200.3 nm.
			58°10'N
			8°35'E
		15.21	Kristiansand	Made fast alongside the destroyer RICHARD BEITZEN.
				Supplied.
		07.02.43	Kristiansand South
		08.03	AN 3612	Cast off.  Transit in convoy by Patrol Boat 5308 with U-638 and U-359 to Egersund.
		12.00	AN 3528
			NW 3, Sea 5
		16.00	AN 3274
		16.47	Egersund	Made fast alongside U-638.
				Day's run:  85.1 nm.
		08.02.43
		08.00	Egersund
		10.25		Cast off Egersund, transit to the north continued in convoy.
		10.50 - 11.30		Anti-aircraft firing over Egersund.  Anti-aircraft weapons manned.  No attack on the convoy.

	Sun and Moon Data 04.02.43
	Sun and Moon Data 05.02.43
	Sun and Moon Data 06.02.43
	Sun and Moon Data 07.02.43
	Sun and Moon Data 08.02.43

	- 2 -
		continued
		08.02.43
				When beginning transit speed strong vibrations are felt even at low drive levels. Assumption: starboard propeller damaged during berthing.
				Decision:  Enter Stavanger with Patrol Boat 5308 after releasing the other boats to inspect the starboard propeller in calm water.
		12.00	AM 3193
			SW 3, Sea 5, 1010 mb, 5°C
		16.00	AN 3138
		19.21	Stavanger	Made fast.
				Inspection shows damage to a propeller blade. By telephone consultation with Commander and Flottille Engineering Officer of the 11.Uflottille docking possibility at K.M.W. Bergen and escort  for 09.02.43 arranged: with AUX
				B.d.U./Gruppe Nord/NOK Norwegen/Adm. Westküste/11. Uflottille/9. Uflottille/KMW Bergen/See Kommandant Bergen/See Kommandant Stavanger.
				SSD-Gkdos 8.2.43  1920 Entered Stavanger, starboard propeller damaged.  After conversation with Commander 11. Uflottille intend 09.02.43 06.00 hours transit in convoy to Bergen for repairs.  Radio Message switched to Coastal Circuit.
				U-230
				Day's run:  67.6 nm.            (Siegmann)
		09.02.43
		06.24	Stavanger	Cast off.  Transit in convoy by Patrol Boat 5308 to Bergen.
		08.00	AN 2997
		12.00	AN 2935
			SW 4, Sea 3, overcast, 1001 mb
		15.30		Released escort.
		16.00	Off Bergen
		16.23 - 17.07		Deep dive in the deep dive area of the 11. Uflottille.  For this purpose Flottille Engineering Officer of the 11. Uflottille Kaptlt. Ing. Müller taken aboard in the harbor off Bergen.  No issues other than propeller damage.
		17.47	Bergen, Marineholm	Made fast.
				Day's run:  110 nm
				3.0 nm.
		10.02.43	Bergen
		08.51		Dry docked in the pumping station of the KMW Bergen.  Straightening of the starboard propeller by shipyard personnel.
		11.02.43	Bergen
		08.43		Undocked.
		09.30	Marineholm	Made fast to topp off fuel supply and

	Sun and Moon Data 08.02.43
	Sun and Moon Data 09.02.43
	Sun and Moon Data 11.02.43

	- 3 -
		continued
		11.02.43		and fresh provisions.
		16.09		Cast off.
		16.33 - 16.52		Test dive.
		17.00		With U-526 taken in convoy by escort vessel UNITAS.
		19.03	Abeam Marstein	Released escort.
		20.00	AN 2485	Course 270° diesel-electric LF, moved off from the coast.  As arranged U-526 steers 300°.
			WSW 3, Sea 5, 992 mb, overcast
		12.02.43	North Sea
		00.00	AN 2474
		01.30		Course 0°.
		04.00	AN 2365
		08.00	AN 2335	Dived to proceed submerged.
		12.00	AF 8788	Day's run:  92.2 nm
			60°55'N	13.0 nm.
			3°57'E
		16.00	AF 8782
		16.28 - 16.34		Boat ventilated.
		19.04		Surfaced to proceed submerged.
		20.00	AF 8755
		21.00		Course 337°.
		13.02.43	North Sea
		00.00	AF 8487
			NE 5, Sea 6, 985 mb
		04.00	AF 8473
		07.25		Dived to proceed submerged.
		08.00	AF 8426
		12.00	AF 8418	Day's run:  44.2 nm
			NE 7, Sea 8	44.0 nm.
		12.37 - 12.45		Boat ventilated.
		16.00	AF 8411
		17.13 - 17.21		Surfaced to ventilate the boat.
		20.00	AF 8177
		21.30		Surfaced to proceed on the surface.
		14.02.43	European North Sea
		00.00	AF 7369
		04.00	AF 7334
		07.51		Dived to proceed submerged.
		08.00	AF 4986
			NW 2, Sea 4, overcast, 987 mb

	Sun and Moon Data 11.02.43
	Sun and Moon Data 12.02.43
	Sun and Moon Data 13.02.43
	Sun and Moon Data 14.02.43

	- 4 -
		continued
		14.02.43
		12.00	AF 4983	Day's run:  57.0 nm
			63°56'N	41.2 nm.
			1°40'E
		14.03 - 14.11		Boat ventilated.
		15.00		Came to course 294°.
		16.00	AF 4952	Difference between dead reckoning and actual position after a navigation fix 327°T, 29 nm.
		20.00	AF 4595
		19.30		Surfaced to proceed on the surface.
		15.02.43	North Sea
		00.00	AF 4581
		04.00	AF 4469
		08.00	AF 4455
		08.23		Dived to proceed submerged.
		12.00	AF 4449	Day's run:  90 nm
			SE 3, Sea 4	26.3 nm.
			64°49'N
			3°27'W
		13.49 - 14.05		Surfaced to ventilate.
		16.00	AF 4713
		20.00	AF 4714	From 19.40 hours surface transit course 246°.
		16.02.43
		00.00	North Sea
			AE 6953
		04.00	AE 6948
		07.52		Dived to proceed submerged.
		08.00	AE 6894
			NNW 6, Sea 6-7
		12.00	AE 6888
			63°43'N
			7°13'W
		13.58 - 14.09		Boat ventilated.
		16.00	AE 6887
		19.43		Surfaced to proceed on the surface.
		20.00	AE 9212
			SSW 6, Sea 6, 1022 mb
		21.48		Dived to repair the broken Fu.M.B. cable.
		23.56		Surfaced.
		17.02.43	Iceland - Faroe Islands
		00.00	AE 9136
		04.00	AE 9152
		08.00	AE 9148
			W 6, Sea 6-7
		08.27		Dived to proceed submerged.
		12.00	AE 9147	Day's run:  45 nm
			63°03'N	47.3 nm.
			10°36'W
		14.26 - 14.32		Ventilated the boat.
		16.00	AE 8392

	Sun and Moon Data 14.02.43
	Sun and Moon Data 15.02.43
	Sun and Moon Data 16.02.43
	Sun and Moon Data 17.02.43

	- 5 -
		continued
		17.02.43
		19.03 - 19.09		Surfaced to ventilate.
				Because of heavy weather and to save fuel also proceeded submerged at night.
		20.00	AE 8386	If there is no improvement in the weather intend to proceed further submerged by day and surfaced by night to about 15°W.
		18.02.43
		00.00	AK 8385
		04.00	AE 8356
			W 8, Sea 8, Vis. greatly changing, hail showers
		00.34 - 03.27		Surfaced to charge and ventilate.
		08.00	AE 8382
		07.14 - 08.19		Boat ventilated.
		12.00	AE 8376	14.10 - 14.18 hours boat ventilated.
			62°50'N
			12°18'W
		16.00	AE 8378	New course 220°.
		20.00	AE 8611
		20.25		Surfaced to proceed on the surface.
		19.02.43	Iceland Faroe Strait
		00.00	AE 8565
		04.00	AE 8585
			WSW 8, Sea 7-8
		05.00		Dived due to weather and to proceed submerged.
		08.00	AE 8821
		09.45 - 09.53		Boat ventilated.
		12.00	AE 8816	Day's run:  52.6 nm
			W 8, Sea 8-9	44.5 nm.
			61°36'N
			14°37'W
		15.14 - 15.35		Boat ventilated.
		16.00	AE 8842
		18.55		Surfaced to charge.
		20.00	AK 8789	Dived to proceed submerged.
		20.02.43	North Atlantic
		00.00	AE 8795
		04.00	AE 8797
		06.00		Surfaced to charge and ventilate.
		08.00	AL 3253
			SW 6-7, Sea 7, high Swell
		08.46		Dived to proceed submerged.
		12.00	AL 3257	Day's run:  33.2 nm
			60°24'N	60.0 nm.
			16°44'W
		14.00 - 14.12		Surfaced to ventilate.
		16.00	AL 3257
		20.00	AL 3273	Surfaced to proceed on the surface.

	Sun and Moon Data 17.02.43
	Sun and Moon Data 18.02.43
	Sun and Moon Data 19.02.43
	Sun and Moon Data 20.02.43

	- 6 -
		21.02.43
		00.00	AL 3196
			SW 6, Sea 7, overcast, freshening, rising Swell, Vis. changing
		02.10		1 shadow in sight bearing 200°T.  Due to the heavy seas and the greatly changing visibility the enemy was seen very near for a short moment as the moon appeared. The Watch Officer had initially turned away hard, I expected surprise by patrol vessels in this area. While turning away I recognized a steamer of approximately 4000 GRT. A flush decker, low smokestack, 2 masts.  Engine maneuvers.  The first bearings give no shift.
		02.33		With a sudden deterioration of visibility the enemy is lost from sight, turned towards the last visual bearing.  Because up to 02.55 hours the steamer did not come in sight again, dived to listen.  Sound bearing in 300°T.  Surfaced, pursued.
		03.40		Again dived to listen.  Sound bearing now 30°T.  Surfaced.  Pursued.
		04.46		Nothing seen.  Dived to listen.  Faint sound bearing in 70°T.  Surfaced, pursued.
		06.23		To now nothing seen.  Dived again, no further sound bearings.
		07.00		Pursuit broken off.
				The screws sounds were overlaid or obscured by quite loud scratching and knocking sounds.  Must be apart from the boat may be explained by the heavy seas.  The boat still rolls significantly at depth A -30 meters.
		08.00	AL 3169
		12.00	AL 3195
			60°11'N
			17°56'W
			SW 6, Sea 7	08.47 hours  dived to proceed submerged.
		13.50 - 14.10		Boat ventilated.
		16.00	AL 3197
		20.00	AL 3323
		21.27		Outgoing Radio Message 2032/21/69:
				See enclosure to the K.T.B. Excerpt of the Radio Log Serial No. 1.
				Steamer hunt reported, missing serial numbers requested.
		23.40		Presented Radio Message 2303/21/72 by which I am to head for AK 66 and from tomorrow at 08.00 hours switch to Ireland Circuit.  (see Excerpt of the Radio Log Serial No. 2.)
		22.02.43	North Atlantic
		00.30		Correction to Radio Message 2303/21/72 see Serial No. 3
				[this message was actually 2303/21/74]

	Sun and Moon Data 21.02.43
	Sun and Moon Data 22.02.43

	- 7 -
		continued
		22.02.43
		01.30	AM 1173	Celestial navigation fix gives a difference between dead reckoning and actual position of 71°T, 112 nm.
				This is explained due to distrust of the speed indicator system, previously it was assumed that the speed indicator indicated too low at low propulsion settings.
		04.00	AM 1175
		08.00	AL 3433	Switched to Ireland circuit.
		08.43		Dived to proceed submerged due to weather situation.
		12.00	AL 3436	Day's run:  55.0 nm
			SW 7, Sea 7	17.8 nm.
		16.00	AL 3438
		20.00	AL 3461
		23.02.43	North Atlantic
		00.00	AL 3456
			SSW 8, Sea 8, 1010 mb
		04.00	AL 3457
		08.00	AL 3473
		08.49		I decide to proceed by day submerged due to the weather situation.
		12.00	AL 3475	Day's run:  45.1 nm
			59°13'N	10.0 nm.
			17°12'W
		16.00	AL 3533
		20.00	AL 3553	Surfaced to proceed submerged.
		24.02.43
		00.00	AL 3557
		04.00	AL 3577
		08.00	AL 2834
		09.00		Presented Radio Message 1049/21/137:  Serial No. 4
				Deployment of the Group Burgraf with 8 boats on 25 February at 08.00 hours in reconnaissance line from AK 6289 to 9398 course 240° day's run 90 nm.
				Therefore I must head for AK 6596.  This can be done only when it abates further, so that I can run at high speed.
		12.00	AL 2853
			57°53'N
			20°02'W
			SW 6, abating, Sea 6
		16.00	AL 2874
		20.00	AL 2923
		25.02.43
		00.00	AL 2941	Outgoing Radio Message 0222 can not execute orders because of too great range.  My position is AL 2931. (see Serial No. 5)

	Sun and Moon Data 22.02.43
	Sun and Moon Data 23.02.43
	Sun and Moon Data 24.02.43
	Sun and Moon Data 25.02.43

	- 8 -
		continued
		25.02.43
		04.00	AL 0191
		04.30		Incoming Radio Message 0349/25/174:
				To Group Burggraf departure of the group delayed due to the late arrival of Siegmann to 26 February at 08.00 hours.
		08.00	AL 4225
		12.00	AL 4241
			SW 5, Sea 5, 1020 mb
			56°02'N	Day's run:  189.6 nm
			25°00'W	3.2 nm.
		16.00	AL 4182
		20.00	AL 4411
		20.32		Crash dive for aircraft.  Type not clearly distinguished, probably "Consolidated" course x0°.
		21.23		Surfaced.
		26.02.43
		00.00	AK 6637	Transit to initial position.
		04.00	AK 6654	Took position in reconnaissance line.
		08.00	AK 6596	Course 240°, speed 6 knots.
		12.00	AK 6589
			54°37'N
			28°31'W
			SW 5, Sea 6, overcast, Vis. changing, 1020 mb, +7C
		16.00	AK 6821
		20.00	AK 6818
		27.02.43	North Atlantic
		00.00	AK 6763
		04.00	AK 6764	Advance in reconnaissance line.
		08.00	AK 6758
		10.30 - 11.00		Dived.
		12.00	AK 6773	Day's run:  71.2 nm
			SSW 8, Sea 7, Vis. changing, 1022 mb	1.3 nm.
		16.00	AK 6777
		17.00		Incoming Radio Message 1615/27/135:  Serial No. 7
				Group Burggraf with course and speed so as to reach the position line CQ 5855 to 8965 on 28 February at 08.00 hours then continue to advance as before.  [AK 5855 to AK 8965]
		20.00	AK 8322
		28.02.43
		00.00	AK 8316
		04.00	AK 8317
		08.00	AK 8261
		09.48		Dived.
		10.00		Surfaced.
		12.00	AK 8258
			53°10'N
			33°18'W
			SSW 4, Sea 5, Vis. 5 nm

	Sun and Moon Data 25.02.43
	Sun and Moon Data 26.02.43
	Sun and Moon Data 27.02.43
	Sun and Moon Data 28.02.43

	- 9 -
		continue
		28.02.43
		16.00	AK 8272
		20.00	AK 8196
		20.06		Dived to listen due to heavy visibility deterioration.  The listener believed he heard faint enemy sounds bearing   210°T.  Surfaced.  Pursued.  In the night I operated on this sound bearing and dived eight times.  In the sound gear scratching and knocking sounds were heard again.  From the beginning I was not fully convinced by the perception of the sound man (inexperienced personnel), but was operating on it because I was not skilled at listening.
		22.02		Presented Radio Message Officer Only 2209/28/163:
				By which Burggraf was to remain positioned from 3 March in patrol line from AJ 9125 - 9687, because from 3 March a convoy was expected (see Serial No. 8).
		01.03.43
		00.00	AK 8436
		04.00	AK 8437
		08.00	AK 8459
		09.00		Operation on sound bearing broken off.  I am convinced that the G.H.G. deceived me. Throughout the entire night no clear propellers were detected. Curiously however, over time the recorded background noise shifts in the right direction, but is often erratic. Decision: for the rest of the patrol I want to free myself as mush as possible from the G.H.G.
		10.50		Radio Message 0931/1/168 received:
				Orders radio silence, dive for detection, in no case reveal the deployment.
		12.00	AK 8419
			N 3, Sea 4, 1024 mb, +7.5°C
			52°34'N	Day's run:  89.2 nm
			35°20'W	8.1 nm.
		16.00	AK 7637
		17.00		With Radio Message 1557/1/176 orders for "Burggraf" to switch to Hubertus Circuit.  (see Serial No. 10)
		20.00	AM 7536
		02.03.43	North Atlantic
		00.00	AK 7517
		04.00	AK 7425
		08.00	AK 7411
		12.00	AJ 9631
			ESE 2, Sea 2, Cumulus, 1030 mb, Vis. good
			52°46'N	Day's run:  162.9 nm
			40°30'W	1.5 nm.

	Sun and Moon Data 28.02.43
	Sun and Moon Data 01.03.43
	Sun and Moon Data 02.03.43

	- 10 -
		continued
		02.03.43
		16.00	AJ 9379
		19.49		Crash dive for aircraft bearing 210°T, course NE.  Type not recognized.  With check of the Fu.M.B. determined that the cable had no continuity.  Fu.M.B. repaired.
		20.00	AJ 9294	Surfaced.  The Fu.M.B. cable had broken in two places.   Was constantly repaired by the radio personnel, however with little success, then the cable would break again at the location of the old breaks.
				Decision:  request a new cable at the first opportunity.
		03.03.43
		00.00	AJ 9283
		04.00	AJ 9271	Reached new position in patrol line.
		08.00	AJ 9271
		11.14 - 11.52		Dived.
		12.00	AJ 9271
			53°06'N	Day's run:  135,8 nm
			42°56'W	12.2 nm.
			SE 2, Sea 2, overcast, 1013 mb
		16.00	AJ 9249
		20.00	AJ 9271
		04.03.43	North Atlantic	Monitoring in patrol line.
		00.00	AJ 9193
		04.00	AJ 9169
		08.00	AJ 9169
		10.43 - 12.08		Dived.
		12.00	AJ 9271
			53°06'N
			42°56'W
			ESE 4, Sea 4, rain
		12.28	AJ 9271	U-boat in sight briefly.
			53°06'N	Day's run:  113.7 nm
			42°56'W	0.8 nm.
			ESE 4, Sea 4, rain, Vis. 5 nm
		15.10		Incoming Radio Message 1452/4/898:
				Whereby from the evening of 4 March a NE-bound convoy was expected.  (see Serial No. 11)
		16.00	AJ 9271
		20.00	AJ 9271
		21.57 - 22.43		Dived to listen.

	Sun and Moon Data 02.03.43
	Sun and Moon Data 03.03.43
	Sun and Moon Data 04.03.43

	- 11 -
		05.03.43	North Atlantic
		00.00	AJ 9169
		04.00	AJ 9169	Back and forth in position in patrol line.
		08.00	AJ 9171
		12.00	AJ 9171
			53°07'N	Day's run:  98.8 nm
			42°58'W	5.7 nm.
			SW 7, Sea 7, overcast, driving snow
		16.00	AJ 9169
		19.45		Steamer in sight bearing 250°T, unfortunately freshens up very strongly, always between dense snow squalls, have contact up to 20.45 hours.  Twice I encounter snow squalls which rob visibility. In each case I close immediately on the last visual bearing. Twice this succeeds, but suddenly I am quite near ahead him, because visibility improvement occurred unevenly.  The steamer is out to the mast, smokestack and bridge. I do not dive, but come about immediately into a snow squall located behind me.  Drive in in the edge of this squall.  Suddenly again the steamer is obscured by snow and hail - a squall which does not want to end. Came about and again closed on the enemy.
		21.35		At the plotted meeting point no visibility, twilight.
		20.00	AJ 9169	Incoming Radio Message 1917/5/821:
				Whereby Group "Burggraf" from 23.00 hours is to run on course 45° and 6 knots over ground until the morning of 6 March at 10.00 hours, then come about and in the evening at 21.00 hours remain positioned in the old patrol line. (see Serial No. 12)
				Visibility improvement is not anticipated. Must decide with a heavy heart to dive and listen. No sound bearings, my confidence in the G.H.G. drops further, pursued at AK course 45°.
		06.03.43	North Atlantic
		00.00	AJ 6873
		02.00		Pursuit for 3 hours at AK.
		04.00	AJ 6881	Hunt broken off and proceeded to position in accordance with Radio Message 1917/5/821 (Serial No. 12).  Omitted report to Control, because the steamer did not belong to the expected convoy.
		08.00	AJ 6883
		10.00		Came about as ordered.
		12.00	AJ 6972
			53°07'N
			42°58'W
			SW 5, Sea 5, squalls, snow
		13.40		Enemy report from Hopmann from AJ 6669 at 11.30 hours concerning the convoy on an easterly course.
				See Radio Message 1133/6/826
				and Radio Message 1056/6/827  [actually 1056/6/824]
				(see Serial Nos.13 and 14).

	Sun and Moon Data 05.03.43
	Sun and Moon Data 06.03.43

	- 12 -
		continued
		06.03.43		Hopmann sighted 5 steamers in AJ 6691 at 10.40 hours, course 45°.
				Operating on Hopmann.
				Incoming Radio Message 1240/6/828:  Serial No. 15
				Request for Short Signal weather report.
				Short Signal weather report sent:
				54°N, 41°W, rising 1026 mb, +5°C, SW 5, cumulus clouds with precipitation (showers), heavy snow showers, Vis, 5 nm, high W-Swell
		14.15		Radio Message 1255/6/830:  Serial No. 16
				Contains operational orders for me on Hopmann convoy
		16.00	AJ 6938
		17.20		Bearing signals received from contact keeper bearing 28°T.  My course is 25°.
		20.00		Brief test dive, operating on convoy courses 70-90°.  Will reach plotted intercept point about 00.00 hours, operate further on contact keeper reports (see Serial No. 17-21) according to which the convoy on average seems to steer a northeasterly course.  Come to course 60° and must meet the enemy at 03.00 hours at 8 knot convoy speed.
		07.03.43
		00.00	AK 4224
		02.00		A steamer pops out of a snow squall, ship steers 45°, I take him for a steamer of the convoy and search to both sides without losing sight of the steamer.  Once again hail squalls and driving snow.  St. Elmo's fire.  Initially no other steamers sighted.  Therefore initiated attack on steamer.
		02.10		Single shot from tube 5.
				After 800 meters running time a hit amidships.
				Steamers takes a list of 40 to 50°.  Burns and sinks.  Suddenly from the bridge (already at the level of the waterline) one rocket was fired 2 times.  Nevertheless I am in the convoy.  From a cloud bank I suddenly see 3 steamers, one of these has already passed by.  I am in the center of the convoy and must shoot immediately.  I decide on two two-fans on 2 ships from tubes
		02.15		Fan from tubes 1 and 3.
				Was a miss, because due to an order transmission failure the wrong enemy bow was set.  At the same moment I recognize the enemy turned about 40° towards me. I can still just take the 2nd fan.

	Sun and Moon Data 06.03.43
	Sun and Moon Data 07.03.43

	- 13 -
		continued
		07.03.43
				Precarious situation, because again a strong hailstorm robs me of visibility. When it clears up after a few minutes a ship of the convoy is approaching exactly towards me. I am in ramming position. It is immediately clear that with my low, one diesel ahead KF and with the high seas I can not get clear on the surface. Crash dive. While diving I still the sensation that I will be rammed. At 10 meters the propellers of the steamer pass over me.
		02.28		Unfortunately, the sound locator fails again completely. No defense, unclear sounds in all 4 sectors. Believe that defense is hindered strongly by the weather conditions. Use the time in order to reload.
		04.30	AK 0231	No further sounds.  Surfaced.  On surfacing I see a faint light bearing 60°T.  Believe it is an escort who recovers survivors.   I had run up 5 minutes towards the light when it extinguished.  Suspect stern sweeper and try to avoid it, I run into another escort which now sets a faint steaming light, turns towards me and apparently locates me with a red searchlight.
				Radio Message 0416/7/865:
				Collided with convoy in snow shower 02.00 hours naval square AK 4234.  Course 45°, 8 knots.        "U-230".
				I try to escape from the enemy on the surface which succeeds with 3 times AK against the seas after 25 minutes. In the process the bridge staff gets in danger of going overboard. Loss of 5 pairs of binoculars.
			AJ 3998	Outgoing Radio Message 0526/7/867:
				Naval square AJ 3998 was hunted by escort vessels with red searchlight.
				Siegmann.
				I turn back again slowly towards.  I manage to push past the escort and run at AK on course 60° to the convoy.
		09.10	AK 1954	Bright flash and explosion on the port side, is believed on the bridge to be artillery fire. Coming closer, it turns out to be a torpedo hit on a large steamer of about 6000 GRT. A few minutes later I see ahead four steamers of the convoy in double keel line. They are all older freighter type ships of 5000 GRT with cut off masts and lowered areas of the ship's side where the gunwale is at the same height as the deck fore and aft.  Had the same characteristics of the steamer I sank.

Sun and Moon Data 07.03.43

	- 14 -
		continued
		07.03.43		So once again I have met the convoy from behind. Must shoot during the next minutes, because it is quickly becoming light.  Took position on the starboard side. 3 escort vessels briefly distinguished just ahead of the steamer group. At first no escort is seen to starboard.  I suspect it is running up in a hail storm to port behind me. I turn in to approach.
		09.24	AK 1954	2 two-fans on 2 overlapping 5000 GRT ships.
		09.25		[illegible hand written shooting data]
				First fan misses, I observed that one of the torpedoes is a surface runner. After 2800 meters running time an explosion column at the level of the smokestack on the last steamer shot at was observed by me and a watchstander.  In the boat a torpedo detonation was perceived.  No further observations because a snow squall took visibility away in the direction of the convoy.
		09.43		When it suddenly clears it is light and I am positioned before a corvette with target angle 0° on which I can make out all details without binoculars.  Crash dive.  Initially no attack, then 3 depth charges far off.  Ran submerged against the sea.  Want to reload one tube and in the process have bad luck.  Torpedo in tube 2 is a tube runner.  No fault of the personnel.
		11.52		Surfaced.  Ran to the shooting location.  Nothing seen.  It has freshened greatly.  Operated at highest speed on the convoy.  Between the first and second attack.
				Radio Message 0658 (see Serial No. 28) sent
				1.)  02.10 hours 5000 GRT freighter from convoy, two miss.
				2.)  Fu.M.B. antenna out of service, request replacement.
				3.)  SW 4, medium high, 1002 mb, Vis. heavily changing.  72 cbm.
				Siegmann.
		12.00	AK 1938
			57°04'N
			35°50'W
			SW 6, Sea 7, freshening, Vis. changing, showers
		12.59		Outgoing Radio Message 1156/7/876: (see Serial No. 29)
				Convoy position 09.30 naval square AK 1954, course 60°, 8 knots.
				Siegmann.

Sun and Moon Data 07.03.43

	- 15 -
		continued
		07.03.43
		15.13		Incoming Radio Message 1354/7/881:  Serial No. 30
				By which Control expects convoy course 50-80°.
		15.17	SW 8, Sea 9, squalls, rain showers, Vis. varies between 1000 meters and 8 nm	Mastheads bearing 60°T, held contact proves to be an independent heaved to.
		16.00	AK 1768
		17.21	AK 1795	Had to dive because I have come too close to the enemy with the visibility improvement.
				Decision:  Want to run towards the enemy submerged to attack in the twilight.  Day attack is not possible due to the weather.  Reloaded.
		18.50		Fast propeller sounds nearby.
				At the same moment the steamer stops, up to now it had run at slow speed.  Evidently there are very good listening conditions today. The noises are gone and bearings on the propeller sounds are easily determined. Fast propeller sounds seem to be a corvette which stops every 25 minutes and after 25 minutes briefly goes again.
				Own behavior:  Reloading broken off, believed it would be heard.  Went to depth A +20 meters and ran off to the south.  For about 1 hour another escort vessel appears which behaves similarly. Boat can not be held at periscope depth therefore must remain submerged, I hope that the escort vessels move off.
		22.15		Escort vessel sounds are more distant.
				Up to now the steamer has not started up.
		22.43		No further sound bearings.
				Surfaced.  Ran to the sighting location.  It is a very dark night.  Searched for the steamer in the vicinity, often dived to listen.
		23.30		Steamer shear abandoned and pursued the convoy at highest speed course 60°.
		08.03.43
		00.00	AK 1769	Incoming Radio Message 2232/7/802:  Serial No. 31
				Christophersen reports convoy AK 1837 with SE-course.
		04.00	AK 1829	SE-course appears to me initially improbable.  Continue to operate on course 40-60°.
		05.00		Operated on Christophersen contact keeper report, he seems to be very sure of it.  Made a leg to the SE.

	Sun and Moon Data 07.03.43
	Sun and Moon Data 08.03.43

	- 16 -
		continued
		08.03.43
		11.52		Short Signal from "Möglich":  Serial No. 34
				Enemy in sight AK 2691.
		12.00	AK 2887	I operate on the continuously received contact keeper reports from "U-526" ("Möglich").  Serial Nos. 34, 35, 36, 38, 39, 40, 43, 44.
			AK 1938
			57°20'N
			20°31'W	Day's run:  170.4 nm,    20.7 nm.
			SW 5, Sea 6, 10/10, 1013 mb
		12.30		Radio Message 1220/8/818:  Serial No. 37
				West and Ostmark boats operate on "Möglich" report if no own enemy contact.
		17.00		Presented Radio Message 1623/8/833:  Serial No. 42
				We should attempt to catch the convoy before darkness and shoot as soon as is is night, to bring up the other boats by star shells.
		17.47		With heavy visibility deterioration dived to listen.
		17.20		Bearing signals received twice from "Möglich".  Bearings indicate directly ahead.
				At twilight no further contact keeper reports have been received.  I search in sector 60-80°.
		20.00	AK 3568
		21.05		Requested bearing signals by Short Signal:  Serial No. 46
				No bearings signals received.
		09.03.43	North Atlantic
		00.00	AK 3651
		04.00	AK 3639	Brief test dive.  At the same time torpedo in tube 4 examined.  Torpedo has become unusable.
		10.55		Incoming Radio Message 1055/9/874:  Serial No. 47
				Request for Short Signal weather report.
				Believe I am now positioned ahead of the convoy, looking further in an easterly direction. Searching in the sector 60° to 80°, 10 knots
		12.00	AL 1536	Day's run:  300.5 nm,    3.8 nm.
			58°58'N
			24°45'W
			W 4-5, Sea 7, overcast, misty, Vis. changing
		12.17		Radio Message 1105/9/879:  Serial No. 48
				Incoming contact keeper report from "Schetelig".
				Continued to operate on contact keeper reports from "Schetelig", "Möglich" and "Maßmann".
		16.00	AL 1614
		19.50	AL 1661	"U-Tippelskirch" met.  Navigation exchange results in 20 nm difference.  "Tippelskirch" wants to search in northerly sector from 0° to 50°.  I search in sector 60° to 90°.
		23.09		Outgoing Radio Message 2236/9/880:  Serial No. 51
				Success from 7 March reported.
		10.03.43
		01.15	AL 2528	Several star shells ahead to port.
				Ran towards.  I see 2 corvettes shoot star shells only briefly 1 steamer, round this steamer a number of lights.
		01.49		Outgoing Short Signal:  Enemy in sight square AL 2528.

	Sun and Moon Data 08.03.43
	Sun and Moon Data 09.03.43
	Sun and Moon Data 10.03.43

	- 17 -
		continued
		10.03.43
				The fireworks go on for about 10 minutes.  I approach and hold contact on an escort.  Apparently I have again chased into the convoy from behind. Ran over to the starboard side and attempted to get at the steamers, however ran into nothing. Went back to the escort so as not to lose contact again. I do not have a clear picture and expect a possible course change of the convoy after the star shell shooting.
		02.20		Contact lost.  I decide not to dive to listen because as before I may sight the enemy at any moment. I'd rather stay above water and run on an easterly course to get ahead of the convoy.
		04.03		Radio Message 0255/20/820:  Serial No. 57
				Reported losing contact on the enemy.
		04.30	AL 2539	Made a leg to the NE.
		08.00	AL 2627
		09.50	AL 2653	Incoming Radio Message from Schetelig 0831/10/826: Serial No. 58
				Convoy located AL 2612 at 08.30 hours.
				I operate further on "Schetelig".
		10.30		Incoming Radio Message 1015/10/827:  Serial No. 59
				Boats in promising position should hang on.
				I continue to operate, search further under the assumption the convoy steers 80-90°.
		10.49	AL 2637	Crash dive for aircraft, flying boat, type not recognized, course east.
		12.00	AL 2635	Up to now remain undetected.
			W 6, Sea 8, clear air, 998 mb, +8°C	Day's run:  213.6 nm,    2.8 nm.
			58°56'N
			19°30'W
		16.00	AL 3357	"Pietzech" sights steamer with close and remote escort in square 3526 at 15.00 hours.  Serial No. 60.
				Operated on this report, because in this operation we seem to be dealing with either a small convoy or a heavily fragmented convoy.  My sighting of tonight agrees with this message.  Radio Message 1500/10/853:  Serial No. 60
		20.00	AL 3529 [actually message 10/852]	"Brünning" reports in Radio Message /10/858 apparently the same steamer in AL 3526 in the same square. I decide because I firmly believe I am ahead of the enemy, that from now on, I will proceed at low speed north to south in position.  My navigation is uncertain, however, I expect I am displaced to the east.
		22.40		Incoming Radio Message 2220/10/858:  Serial No. 63
				Orders to break off at dawn and move off to the west.
		11.03.43
		00.00	AL 2542

	Sun and Moon Data 10.03.43
	Sun and Moon Data 11.03.43

	- 18 -
		continued
		11.03.43
		04.00	AL 2538	Search broken off came to westerly course at economical transit speed.
			WSW 7-8, Sea 8, fog and hail showers, 1000 mb, +8°C
		08.00	AL 3527
			Vis. bad, fog
		10.29		Dived to work on the torpedoes.
		12.00	AL 3518
			Unchanged.
			58°55'N
			19°00'W
		16.00	AL 2639
		18.36		Surfaced to proceed on the surface.
		20.00	AL 2632	Presented Radio Message 1422/11/883:  Serial No. 65
				Orders for transit to supplier and to switch to "Diana" Circuit.
		21.30		Course 210° to supply place.
		23.40		In accordance with Radio Message 2217/11/714:  Serial No. 66 I am to supply from "Wolfbauer" in BD 2455.
		12.03.43	North Atlantic
		00.00	AL 2625
		04.00	AL 2654
		05.00		Came to course 220°.  Course to BD 2455.
		08.00	AL 2672
		12.00	AL 2599	Day's run:  63.8 nm,    24.7 nm.
			58°12'N
			21°10'W
			WSW 5, Sea 6, 7/10, 1007 mb, +8°C, squalls
		16.00	AL 2738
		20.00	AL 2784
		20.01		Incoming Radio Message 1915/12/741:  Serial No. 67
				A boat, going to Wolfbauer, should give binoculars to "Pietzsch".
		13.03.43	North Atlantic
		00.00	AL 2915
		00.39		Outgoing Radio Message 0003/13/750:  Serial No. 68
				Concerning binoculars transfer to "Pietzsch".
				Control orders meeting between Zetzsche-Pietzsch.
		04.00	AL 0166	Transit to supply place BD 2455.
		08.00	AL 4233
		12.00	AL 4261
			56°03'N
			24°00'W
			SW 5, Sea 6, overcast, 1011 mb, +9°C
		16.00	AL 4256
		20.00	AL 4259

	Sun and Moon Data 11.03.43
	Sun and Moon Data 12.03.43
	Sun and Moon Data 13.03.43

	- 19 -
		14.03.43	North Atlantic	Transit to supply square BD 2455.
		00.00	AL 4254
		04.00	AL 4514
		08.00	AL 4465
		12.00	AL 4486	Day's run:  120 nm,    0.0 nm.
			54°48'N
			25°57'W
		14.20		Incoming Radio Message 1346/14/780:  Serial No. 69
				No supply.  Take over antenna at "Zech".
		16.00	AL 4721
		20.00	AL 4742
		15.05.43	North Atlantic
		00.00	AK 4771
		04.00	AK 9335
		08.00	AK 9364	Transit to supply place.
		12.00	AK 9389	Day's run:  123.5 nm.
			52°53'N
			27°06'W
			S 3, Sea 4, 999 mb, +10°C, misty
		16.00	AK 9627
		20.00	AK 9649
		16.03.43	North Atlantic
		00.00	AK 9675
		04.00	AK 9914
		08.00	AK 9941	Transit to the supply place.
			SW 7, Sea 8, cloudy, 995 mb, +10°C
		10.30		Dived to proceed submerged.
		12.00	AK 9866	Day's run:  125 nm,    3.2 nm.
			51°32'N
			28°02'W	While ventilating.
		14.46	AK 9869	Crash dive for aircraft bearing 250°T, range = 8000 meters, NE-course, type Sunderland.  No attack.
		20.00	AK 9890
		21.00                 [actually message 1742/16/715]		Incoming Radio Message 1742/16/795:  Serial No. 70 and
				Radio Message 2015/16/716:  Serial No. 79a
				Whereby there is a convoy in BD1525 with easterly course. Position and course of the convoy is favorable for further operation. I still have 28 cubic meters but unfortunately only 4 bridge binoculars.
		17.03.43	North Atlantic
		00.00	BD 3137
		00.15		Outgoing Radio Message 2321/16/726:  Serial No. 71
				Position square 3137.  28 cbm.  Still only 4 bridge binoculars.  Going to square 3473 to "Zech".  Request orders.  All naval square BD.        "Siegmann".
				I hope to receive disposition orders, possibly even fuel from "Zech".  Initially continued transit to "Zech".

	Sun and Moon Data 14.03.43
	Sun and Moon Data 15.03.43
	Sun and Moon Data 16.03.43
	Sun and Moon Data 17.03.43

	- 20 -
		continued
		17.03.43
		04.00	BD 3182
		08.00	BD 3424
		10.30		Incoming Radio Message 1005/17/741:  Serial No. 73
				I should operate, switch to "Hubertus" Circuit and if necessary go to "Wolfbauer" for fuel.
				1.)  I must be in the vicinity of "Zech", however navigation is poor.  Therefore meeting with "Zech" favorable for this evening.
				2.)  It is still 156 nm to "Wolfbauer" meeting with him is favorable for 18 March.
				3.)  Decision:  Waive fuel and binoculars to operate on the convoy at highest speed.
				Operating on Radio Message 0248/17/732:  Serial No. 73
				"Zurmühlen" reports convoy 02.30 hours square 1357, course 60°, 8 knots; and Radio Message 1132/17/851:  Serial No. 74  Kinzel reports convoy 11.09 hours BD 2143, course 40°, 7 knots.
		12.00	BD 3444	Day's run:  76.1 nm,    29.9 nm.
			49°37'N
			29°30'W
			SW 3, Sea 2, 1006 mb, overcast, medium Swell, Vis, up to 8 nm
		13.22		Incoming Radio Message 0930/17/843:  Serial No. 75
				"Wintermeyer" sighted smoke clouds in BD 2116 and Radio Message 1211/17/857 according to which convoy was in BD 2127 on course 50°, 8 knots.  Serial No. 77.
		16.00	BD 2381
		18.33		Outgoing Radio Message 1542/17/872:  Serial No. 76
				Operating on "Kinzel"-convoy.  Supply later from "Wolfbauer".        "Siegmann".
				In accordance with Radio Message 1549/17/873:  Serial No. 79  boats damaged or breaking off report on "Diana" Circuit and switch to "Hubertus" Circuit.
		20.00	BD 2233
		20.38		Incoming Radio Message 2007/17/898:  Serial No. 81
				"Zurmühlen" reports convoy at 17.20 hours in AK 8943.
		23.00		Incoming Radio Message 2131/17/807:  Serial No. 80
				Contains the assessment of Control by which there are 2 convoys.  "Raubgraf" convoy 17.30 hours in AK 8943, "Stürmer" convoy in AK 9462.
				This radio message gives me the desired clarity.  From now I operate on the "Raubgraf" convoy.
		18.03.43	North Atlantic
		00.00	AK 8955	Pursued the convoy on course 45°.
		04.00	AK 8698
		08.00	AK 9446
		09.43		Radio Message 0932/18/847 from "Freyberg": Serial No. 82
				Enemy in sight square AK 9165.
				Run only at HF due to weather.  There is no further possibility to exchange [wet] binoculars for those dried in in the control room.

	Sun and Moon Data 17.03.43
	Sun and Moon Data 18.03.43

	- 21 -
		continued
		18.03.43
		12.00	AK 9493	Day's run:  129.7 nm,    3.1 nm.
			52°45'N
			30°01'W
			NNW 6, Sea 7, overcast, 1006 mb, +7°C
		12.40		KrKr. Radio Message 1230/18/852:  Serial No. 83
				Boats at "Raubgraf"-convoy go on "Freyberg" report.
		16.00	AK 9245
		18.00		Sun navigation fix gives a displacement of 60 nm to the south.  Therefore for me the operation is hopeless.  Break off.  Operating on stragglers.
		18.21		Outgoing Radio Message 1800/18/770:  Serial No. 84
				Report concerning breaking off the operation.
		19.03.43	North Atlantic
		00.00	AK 9447	Transit to the supplier via convoy course in large legs.
		04.00	AK 8699
		08.00	AK 8937	Radio Message 0740/18/866:  Serial No. 85  brings "Kinzel's" position correction .  Yesterday I operated too long on "Kinzel's" report.
		12.00	AK 8948	Day's run:  141.0 nm,    0.0 nm.
			51°22'N
			32°15'W
			NW 2, Sea 2, 1006 mb, +7°C
		16.00	AK 8977	Wreckage field passed.  A great deal of driftwood, 2 smashed boats, life rafts, one body.
		20.00	BD 2123
		20.03.43	North Atlantic	Transit to supplier via convoy route.
		00.00	BD 2154
		04.00	BD 1365
		08.00	BD 1395
		12.00	BD 1389	Day's run:  144 nm.
			50°10'N	By Radio Message 1306/20/713:  Serial No. 86 return harbor for me is Brest.
			34°40'W
			SW 2, Sea 3, Vis. clear, 983 mb, +9°C
		16.00	BD 1612
		20.00	BD 1658
		21.03.43	North Atlantic	Transit to supplier.
		00.00	BD 1695
		04.00	BD 2716
		08.00	BD 2753
		12.00	BD 2728	Day's run:  117.6 nm,    9.4 nm.
			48°58'N
			33°16'W
			SW 1, Sea 1, Vis. good, 984 mb, +9°C, medium Swell

	Sun and Moon Data 18.03.43
	Sun and Moon Data 19.03.43
	Sun and Moon Data 20.03.43
	Sun and Moon Data 21.03.43

	- 22 -
		continued
		21.03.43
		16.00	BD 2728
		16.33		Supplier in sight.
				Recognition signals exchanged.
		17.02 - 18.50		Refueling from "U-Wolfbauer".
				Fu.M.B. antenna taken over and 5 bridge binoculars.  15 cbm fuel oil supplied.
		20.00	BD 2729
		22.03.43	North Atlantic	Return transit.
		00.00	BD 2763
		04.00	BD 2851
		08.00	BD 2865
		12.00	BD 2949	Day's run:  120 nm,    10.1 nm.
			48°43'N
			30°32'W
			SW 2, Sea 3, Vis. clear, 984 mb, +11°C
		16.00	BD 2968
		20.00	BD 3758
		23.03.43	North Atlantic	Return transit.
		00.00	BD 3871
		04.00	BD 3885
		08.00	BD 3974
		12.00	BD 3988	Day's run:  189 nm.
			48°22'N
			25°42'W
			ENE 4, Sea 5, Vis. clear, 986 mb, +13°C
		16.00	BD 3999
		20.00	BE 4113
		24.03.43	North Atlantic	Return transit.
		00.00	BE 4131
		04.00	BE 4215
		08.00	BE 4225
		12.00	BE 4237	Day's run:  129 nm,    3.1 nm.
			48°05'N
			22°24'W
			NE 5, Sea 4, Vis. good, 996 mb, +15°C
		16.00	BE 4343
		20.00	BE 4356
		25.03.43	North Atlantic	Return transit.
		00.00	BE 5145
		04.00	BE 5159
		08.00	BE 5247
		08.08		Dived to proceed submerged.
				Proceeded submerged by day, due to illness of the Engineering Officer.
		12.00	BE 5281	Day's run:  141.9 nm,    8.0 nm.
			47°41'N
			18°24'W
			N 2, Sea 2, misty, 1009 mb, +16°C

	Sun and Moon Data 21.03.43
	Sun and Moon Data 22.03.43
	Sun and Moon Data 23.03.43
	Sun and Moon Data 24.03.43
	Sun and Moon Data 25.03.43

	- 23 -
		continued
		25.03.43
		16.00	BE 5283
		20.00	BE 5292
		21.25		Surfaced to proceed on the surface.
		26.03.43	North Atlantic	Return transit.
		00.00	BE 5376
		04.00	BE 5397
		07.54		Dived to proceed submerged.
		08.00	BE 6178
		12.00	BE 6187	Day's run:  86.4 nm,    33.6 nm.
			47°25'N
			15°24'W
			S 1, Sea 1, Vis. clear, 1017 mb, +20°C, Vis. 12 nm, cloudless
		15.12		Surfaced to proceed on the surface.
		16.00	BE 6432
		17.26		Dived to proceed submerged.
		20.00	BE 6514
		21.17		Surfaced.  Proceeded on the surface.
		27.03.43	North Atlantic	Return transit.
		00.00	BE 6278
		04.00	BE 6538
		08.00	BE 6651
			NNE 1, Sea 1, cumulus clouds, 1020 mb, +15°C
		08.04		Dived to proceed submerged.
		12.00	BE 6655	Day's run:  120.7 nm,    25.2 nm.
			57°05'N
			12°09'W
		16.00	BE 6663
		20.00	BF 4446
		21.00		Surfaced to proceed on the surfaced.
		28.03.43	Bay of Biscay
		00.00	BF 4466
		05.09	BF 5568	Dived for detection on 170 cm.  Steady tone.
				Began submerged transit.
		08.00	BF 4647
		12.00	BF 4649	Day's run:  114.8 nm,    37.9 nm.
			46°43'N
			08°01'W
		16.00	BF 4658
		19.30	BF 4656	Listener reports propeller sounds bearing 80°T.  At periscope depth 1 small vessel about 150 GRT, steering northerly course.  Had flag and lights set, looks more like a motor yacht then a fishing trawler.  Target angle150°, distance 1500 meters.  Neutral markings not distinguished.  Ran off submerged.
		21.54		Surfaced to proceed on the surface.

	Sun and Moon Data 25.03.43
	Sun and Moon Data 26.03.43
	Sun and Moon Data 27.03.43
	Sun and Moon Data 28.03.43

	- 24 -
		29.03.43	Bay of Biscay	Return transit.
		00.00	BF 4601
		02.00		Clocks set ahead one hour.
		04.00	BF 5481	Steered on mine-free route "Kernleder".  Submerged by day.
		30.03.43	Bay of Biscay
				Submerged by day, night on the surface on a mine-free route "Endebrücke".
				Numerous fishing vessels encountered.
		31.03.43	Bay of Biscay
		07.30		Taken under escort, 2 patrol boats.
		10.30		Taken in convoy by Sperrbrecher.
		12.10	Brest	Made fast.
				On board, 31 March 1943
				Kapitänleutnant and Kommandant.

	Sun and Moon Data 29.03.43
	Sun and Moon Data 30.03.43
	Sun and Moon Data 31.03.43

	Enclosures to U-230's KTB - click on the text at left to proceed to the document
Chart	Track chart covering entire patrol
Radio	Excerpt of Radio Log

	Comments of the Befehlshabers der Unterseeboote
	on the K.T.B. of "U-230" (Siegmann) from 4.2.43 to 31.3.43.
	[first paragraph of several sentences is illegible]
	Operation on the "Raubgraf-convoy" was broken off due to lack of fuel in a position that had become hopeless due to incorrect navigation.
	The independents on 21 February and 5 March were unfortunately not caught despite correct effort.
	Without a doubt, during this voyage the commander collected a great many valuable experiences which will be very useful to him in future, and with continuous toughness also lead to even greater success.
	Accredited successes:
	1 steamer        5000 GRT sunk.
	1 steamer        5000 GRT sunk.
		For the Befehlshaber der Unterseeboote
		- The Chief of the Operations Department -

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