U-boat Archive - U-boat KTB - U-178 1st War Patrol

Excerpt of the Important Radio Messages.

08.09.42	To U-261, U-262, U-178.
	In the Radio Message sent from 5.U-Flottille 1708/7/9/172/297 "Wavelength Karl Otto" it must mean: place on Page 1 (Use instructions) in Paragraph 3 Cäsar 1: and Radio Signals.
	5. U-Flottille

08.09.42	Group "Eisbär", "Sobe", and "Mahn"
	1) In "Eisbär" Order, Paragraph 13 and 14 instead of 20°S insert 5°S. In Paragraph 14 delete the word after aircraft carrier.
	2) In Paragraph 15, Paragraph 2 delete 500 nm from supply place and insert: after passing 5° or on request.
	3) Group "Eisbär" supply from 20 September at 10.00 hours see Paragraph 15 if due to prevailing weather not possible, shift supply location after the arrival of all boats.

11.09.42	1.) "Wallas" "Rüggeberg" "Mahn" "Sturm" and "Zurmühlen" report weather.
	2.) "Ibbeken" "Lange" and "Schiebusch" from 12 September 08.00 hours switch to Ireland Circuit.
	3.) "Wattenberg" report position tonight.

12.09.42	From "Ibbeken"
	Strong air surveillance between the Shetlands and Faroes. Aircraft bombs, no damage. Going east of the Faroes.

15.09.42	As Winter Circuit Plan Ireland Circuit is the current Summer Plan with the following changes inserted.
	06.00-08.00 hours KU, 08.00-11.00 hours PT, 19.0020.00 hours PY,
	20.00- 21.00 hours KU, 21.00-22.00 hours PY, 22.00-24.00 hours KU.
	This Winter Circuit Plan goes into effect 21 September at 00.00 hours.

16.09.42	1.) "Ibbeken" "Lange" "Purkhold" and "Malowsky" after passing the line AL 22 to AM 44 report position and possibly experiences.
	2.) New objective for "Lange" is AL 72. Naval squares.

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

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10.09.42	The Radio Message 1731 of 6 September had the following contents: In Star Signal Table "Owambo" to Special Table for Outer Beacon from 7 September 12.00 hours transpose Column "Zeigen" with Column "Löschen". Pencil correction.

11.09.42	New on the Swedish Route.
	"STEGEHOLM" homebound in CE 40.
	"PERU" and "KLIPPARTEN" outbound in AN, naval squares.

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16.09.42	1.) "Ibbeken" "Struckmeier" and "Geissler" report weather during the night. Further "Mengersen" between 22.00 and 02.00 hours "Quaet" between 04.00 and 08.00 hours.
	2.) "Pfeffer". Experiences during transit through the Caribbean, "Lilienfeld", report position immediately.
	3.) "Struckmeier" from 17 September 08.00 hours switch to Ireland Circuit.

16.09.42	From "Ibbeken"
	Position 20.00 hours HF 2352, 190°, 8 knots. 415 cbm. 8/10, W 2, 1020 mb, Vis. good. Passage Shetlands-Faroes strong air surveillance, 8 crash dives 2 times aircraft bombs.

17.09.42	1.) "Struckmeier" "U-440" "Ibbeken" and "Lange" report weather, "Bleichrodt" radiosonde.
	2.) "Hoffmann" as soon as possible send a short daily review for other boats.
	3.) "Mahn" send position, day's run, as well as daily fuel consumption.

17.09.42	From "Ibbeken"
	Position 23.00 hours KD 8893, 190°, 8 knots. 412 cbm. 0/10, W 2, 1018 mb, Vis. good.

19.09.42	You are reminded of entry into effect of Winter Circuit Plan "Ireland" on 21 September at 00.00 hours in accordance with Serial No. 52/155/218 of 15 September.

19.09.42	In the Bay of Biscay at the moment departure of Italian U-boats must be expected.

19.09.42	To Südboote. You are reminded at meetings with diplomatic ships "EGYPEER" "EL NIL" and English "NARKUNDA" (see Gröner). Ships steer from "Cape Town" via naval square FO 45, ES 93, EJ 43, "Ponta del Gada" for England. Position 18 September about FV 86 or GR 51. Do not attack.

19.09.42	All boats. Captains and Chief Engineers of neutrals, according to Prize Regulations, are not to be taken. Only Captains and Chief Engineers of ships of enemy states (in accordance with War Order No. 101 Paragraph 1). Further those from ships in enemy service of the countries in accordance with War Order No. 101 Paragraph 5 a are to be taken prisoner.

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20.09.42	"Ibbeken" Position naval square AK 20.

20.09.42	1.) "Makowski" and "Purkholdt" switch to America Circuit immediately.
	2.) Position confirmation "Ibbeken" settled.

21.09.42	"U-178"
	My position in the morning of 22 September is CF 24.

21.09.42	To "Ibbeken"
	Continue transit via CF 70, DG 95, EH 90 to GH 80. All naval squares.

21.09.42	"Ibbeken" intend to be in naval square CF 24 on the morning of 22 September

22.09.42	In Exchange Table Key Word "Strom" in the plan in the month column for October change the letter Bruno to Anton 4 times.

23.09.42	Positions of diplomatic ships:
	Brazilian "BAGE" and "CUYABA" about FK 10 to Lisbon. Egyptian "EL NIL" and English "NARKUNDA" in FN 20 or FV 20 for England.

24.09.42	On 24 meters with Volume 3 "Heyse" reports: 2 smokestack, speed 18 knots, course 20°, now naval square DG 6536 hunted unsuccessfully. Trade Wind weather.

25.09.42	On 24 meters "Heyse" reports at 0236 reported enemy now square 6312 going to the south.

25.09.42	1.) "Becker" "Lüth" "Gysae" "Walkerling" "Purkholdt" report weather 26 September between 04.00 and 07.00 hours.
	2.) On 26 September at 08.00 hours "Heyse" "Ibbeken" America II "Fechner" "Pfeffer "U-432" switch to Ireland Circuit.
	3.) "Wiebe" and "Hartwig" report situation.
	4.) "Schacht" after "Schnoor" arrival report report own arrival, or suggest new meeting point further north.

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26.09.42	On 25 September are located: 1) Italian tankers "ARCOLA" and "TAIGETE" about ED 68 speed 8 knots for Azores.
	2) Diplomatic "EL NIL" about ET 75 "NARKUNDA" about FE 60. Both ships proceed via ES 93, EJ 43 do not hinder. All naval squares.

27.09.42	For boats: Write the clean copy of the Kriegstagebuch at sea. From now make 7 copies, 3 on blank form, 4 on carbon paper. Take new carbon paper.

27.09.42	Diplomatic located 28 September "BAGE" and "CUYABA" about ES 10 to Lisbon. "EL NIL" EJ 80 "NARKUNDA" ES 60 do not hinder. All naval squares.

28.09.42	New Africa Circuit in effect shortly. 1. Short wave Africa I: 00.00-06.00 hours: IW = 7885 KHz, 06.00-14.00 hours: IP = 13565 KHz, 14.00-18.00 hours: IQ = 19420 KHz, 18.00-24.00 hours: IP = 13565 KHz, 2.) Short wave Africa II: 20.00-10.00 hours: CB = 10818 KHz, 19.00- 20.00 hours: IX = 15880 KHz
	3.) Very Low Frequency Bordeaux = 15.66 KHz at Program times: 05.00-06.00 hours, 09.00-10.00 hours, 11.30-12.00 hours, 14.00-15.00 hours16.00-18.00 hours. From 23.00-01.00 hours all messages in the last 24 hours are repeated on Very Low Frequency.
	4.) Serial No. from 401-500. 5.) War Order follows. Correct Group "Eisbär" Short wave plan annex to Operations Order in accordance with Paragraph 1.

29.09.42	1) Africa Circuit goes into effect 1 October 12.00 hours.
	2) At the same time "Berger" "Cremer" "Edzards" "Gelhaus" "Mahn" "Hartenstein" "Folkers" "Würdemann" "Wiliamowitz" "Sobe" and Group "Eisbär" switch to Africa Circuit.
	3) Boats on other Circuits can use short wave for Africa Circuit as transmitting wavelength.

01.10.42	On 2 October at 06.00 hours "Ibbeken" "Heyse" "Achilles" "U-126" "Popp" Africa, "Schacht" and "Schnoor" Switch to Ireland Circuit.

01.10.42	"Gysae" "Ibbecken" "Lüth" "Sobe" test antenna amplifier as follows:
	1) Compare reception with and without amplifier.
	2) In between listen.
	3) Reception possibilities on one band, while sending on another band. (Bands are 15-20, 20-30, 30-50 meters)
	4) Behavior of the system with artillery firing.
	5) Short report after arrival to Flottille.

02.10.42	From 3 October 12.00 hours for radio messages received on the U-boat Wavelengths, the multiple Circuits only pass through the routing number of the circuit on which they are sent. Therefore the use of multiple routing numbers is not applicable unless a special order is issued.

05.10.42	To all boats. You are reminded of your duty to jump in as radio repeater.

07.10.42	From now radio reports are to be given outbound in the Bay of Biscay from the area 17 to 26°W, or after passing 42 or 50°N Correct corresponding Paragraph in operations Order.
	2) Arrival reports as before. However shift to Coastal Circuit on orders beforehand.

07.10.42	To all boats. From 8 October at 00.00 hours until further notice attack freedom exists in the following area: east of the line naval square FE 91 lower left edge to naval square GZ 16 lower left edge. Southern limit 40°S, eastern limit 27°E.

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09.10.42	To Südboote: 1) From now freedom to attack exists in the following area: East of a line FE 8910 via FM 4954, to GY 3598. Southern limit 40°S, eastern limit 27°E. 2) "Ibbeken" transit to GR via FM 90, FU 50 and GG 10. 3) All naval squares.

10.10.42	From "Ibbeken". Have sunk: 08.30 hours in naval square FM 374 "DUTCHESS OF ATHOLL" from Cape Town for England.

10.10.42	From "Ibbeken". Naval square in Radio Message Serial No. 402 must mean 3734.

11.10.42	To "Emmermann" and "Ibbeken". For propaganda report further details on sinkings, if troops were on board, what else was observed.

12.10.42	With radio communications difficulties especially with enemy reports:
	1) Check sending possibilities on short wave on other Circuits.
	2) If there is no communications at all, use U-boat Group Circuits, to at least reach boats of your own group. Radio repeater service is a duty for all. Failure to do so results in wasted fuel and operational failures.

13.10.42	From 15 October at 07.00 hours until further notice on Very Low Frequency Ireland Circuit Program times in accordance with Order 202. Additionally from 00.00-03.00 Day's roll call to repeat all radio messages sent that day.

15.10.42	From "Ibbeken" 1) "DUTCHESS OF ATHOL" 08.00 hours in sight in twilight. 08.30 hours torpedoed submerged. Shooting range 700 meters. After 3 hits capsized at 11.20 hours. About14 lifeboats fully occupied. In addition to crew about 400 soldiers. A few women and children. Steamer armed. 2) Bread inventory on 11 October showed average net weight of canned bread instead of 700 only 475 grams. From now bread ration set at 210 grams. 3) Flotilla inquiry of the wife of Bootsmaat Siemens in Leer/Ostfr. Kampstrasse.21 requested. 4) Position naval square Fritz Ulli 85, course 130°, 7 knots.

16.10.42	Kr.Kr. Unknown U-boat naval square DH 1392. From "U-333"

18.10.42	1) Since 13 October nothing seen. 2) To Radio Message Serial No. 436 of 13 October: weather must mean: "northwest hurricane". 3) Mtr.Ob.Gefr. Irmschler severe inflammation for three weeks. Syphilis suspected. Request transfer to Doctor boat. 4) Downloaded, 173 cbm, high pressure weather, naval square GQ 9537. From "Witte"

19.10.42	1) "Ibbeken" suggest meeting point with "Witte" for Doctor treatment.
	2) "Witte" give bread as far as possible. 3) If other boats can still deliver bread near the route, report "yes" by Short Signal and go to the meeting point.

19.10.42	To "Witte": Suggested meeting point 22 October 15.00 hours naval square GQ 6834. From "Ibbeken".

19.10.42	All boats: [4 lines illegible]

19.10.42	To "Ibbeken" [1 illegible line]

20.10.42	[1 illegible line]

20.10.42	[1 illegible line]

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20.10.42	To Cape Town boats: 1) Operations area for U-boats is extended. Eastward limit now runs from JL 2610 via KQ 6110 to KF 53. Naval squares. 2) "Ibbeken" free to maneuver in entire area according to traffic situation off important harbors.

21.10.42	ßß will be later at ordered meeting point, in fact 1 day. "Ibbeken"

23.10.42	To "Ibbeken": Request bearing signals in accordance with Kriegsmarine Orders. From "Witte"

23.10.42	To "Witte" transmitter out of service. Bearing signals from there. "Ibbeken"

23.10.42	To "Witte" request bearing signals. "Ibbeken"

23.10.42	From "Ibbeken" to "Witte" steer 205°.

24.10.42	You are reminded of the entry into effect encoding table for Short Signal weather reports. Keyword "Eisenach" on 25 October 12.00 hours. Keyword "Weimer" goes out of effect at the same time.

25.10.42	[illegible 3 lines concerning communications]

26.10.42	Attention is urgently drawn to the observance of Operation Order No. 53 Paragraph 22. Announcement in accordance with Paragraph 14 [three illegible words] rarely possible.

28.10.42	With notification for arrival at convoy intake point include enough slack so that the time point can be complied with even with unfavorable conditions, because delay due to shortage of Sperrbrechers is often not possible.

29.10.24	All boats: In the last period [7 illegible lines concerning aircraft attacks]

29.10.24	[1 illegible line]

30.10.24	To "Gysae" and "Lüth"
	Free to maneuver east of the longitude of naval square GR 56 within the entire released area. Each operate according to the defense situation close off the important harbors. The sinking reports of "Poske" and "Witte" are called to your attention.

30.10.24	[illegible 9 lines concerning communications]

01.11.42	To all boats: [1 illegible line]

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02.11.42	Report weather: 1.) "Rodler" between 22.00 and 02.00 hours " "Kessler" "Struckmeier" "Mannstein" and "Heydemann" between 03.00 and 06.00 hours.
	2.) Circuits from 3 November 08.00 hours: "Neumann" America I, "Stock" "Kottmann" "Höltering" and "Massmann" Coastal Circuit.
	3.) "Zschech" and "Ibbeken" report situation.

01.11.42	1.) Report weather: "Bargsten" between 23.00 and 02.00 hours, "Schwartzkopf" "Mannstein" "Eppen" and "Becker" between 03.00 and 06.00 hours. "Feiler" switch on 2 November Ireland Circuit. 2.) [etc.] 3.) Liebe and Ibbeken report situation.

03.11.42	Sank 1 November "LAURENTIC" square 8530 course 230°. Light sea and air. Going to 53. All naval square KP. 223 cbm . Very irregular Eto run due to very low acid level. Ibbeken.

03.11.42	To "Ibbeken": 1) 123 cbm unlikely. A minimum of 223 cbm expected. 2) Sinking took place in a not authorized area. Southern limit is 40°S. Pay attention to orders. 3) For the rest, good results.

03.11.42	To "Ibbeken": 1) Acid level can still be sufficient, even if not no longer detectable over the cover plate. 2.) When there is an opportunity report a) how and in which cells is too low acid level determined, b) in what way irregular Eto run was determined.

03.11.42	Position "Ibbeken" naval square KP 53.

04.11.42	To "Ibbeken": "LAURENTIC" unquestionably already sunk earlier. When there is an opportunity, report if name perfectly determined or if only similar steamer. Also give estimated tonnage and location of the sinking.

04.11.42	To Südboote: Over frequencies of the Africa Circuit up to now little success. If over other times of the day communications are bad, during these times observe other frequencies and if they are seen to be usable, add radio report. As far as the military situation allows, occasionally transmit during lightness. Since good day communications from boats to the Homeland are of interest.

04.11.42	All boats: [13 illegible lines concerning air activity]

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05.11.42	To all boats: Interference frequencies, compartment fans, electrical shavers, hair cutting machines, hair dryers as well as over frequencies of own short wave transmitter, broadcast receiver can be received on the Fu.M.B. Concerning auxiliary machinery etc. no experiences. When operating the Fu.M.B. consider the above devices. Repeat to Mediterranean.

07.11.42	1.) Position East Africa ships in transit to ET 6340 today about GR 40 and GR 10. Named ships "VULKANIA" and "SATURMA", "GIULIOCHSARO" [spelling?] and "DUILIO". 2.) Diplomatic ship "CABO DE HORNES" located with course for "Lisbon" in BE 80. Do not attack.

07.11.42	To all boats: 1.) Fu.M.B. detection reports with date, time, position and wavelength send individually or collectively. 2.) In service report of repaired Fu.M.B. required. Protect cables, don't nick. With horizontal cable restricted, vertical reception possible. Large [illegible word], leaked capacitors are mostly still usable because they have not penetrated. Loosen cable end terminals.

08.11.42	From Vowe: Steamer naval square EH 6857 upper right southeasterly course. Question holding contact.

08.11.42	Vowe hold contact, Heyse sink.

08.11.42	Three master sunk as ordered Now EJ 7474 search on the way to supply. 2.) Arrival time later.

09.11.42	To all boats: Orders: after each shooting and before each removal of 2 cm anti-aircraft gun from the mount. Check cartridge chamber and report "Barrel is clear". Reason: Lately losses due to detonation of shells after shooting in the barrel below deck.

10.11.42	To all boats: [10 illegible lines concerning aircraft weapons]

11.11.42	[11 illegible lines concerning communications]

11.11.42	Radio Message from "Ibbeken" received incomplete, use better wavelength (Africa I), pay attention to Volume report, jump in as radio repeater.

11.11.42	Reported Italian homebound ships run about 11 to 14 November naval square ET 6340, for [2 illegible locations]. Do not attack.

11.11.42	To "Ibbeken" "TALMAKLASSE" was "MENDOZA".

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12.11.42	All boats: 1) With Alarm for aircraft, go straight away to depth A meters. Lesser depths only if the U-boat was unnoticed with certainty, and with prompt diving for determined locating [radar]. In individual cases boats are still damaged by aircraft bombs at depth A -20 meters and up to 2 minutes after Alarm. 2) If the boat is unnoticed with certainty, go straight away to periscope depth, by this the boat may be able to surface quickly again.

13.11.42	All boats: Locating reports must contain: time, position during observation, wavelength, polarization possibly suspected enemy location method.

17.11.42	Correct Enclosure I Standing Order 203 as follows: Column B strike FTF set CA strike FSS set CG and change the frequency to 13767 Column D strike FTW set CD and change frequency to 12259 strike FTV and set IR. Correction goes into effect immediately.

17.11.42	From "Ibbeken" 1) Sank 13 Nov "LOUISE MOLLER" square KP 9885, Torpedoed 15 November freighter 6000 GRT square KZ 2628. 2 hits center. Ship abandoned by crew. Sinking not observed due to air.
	2) Square KP 80 and KZ 20 heavy air, once aircraft bombs, no damage. on 15 November half hourly distant then entire day many depth charges.
	3) East traffic "Durban" goes via KP 97. 4) Moving off for 2 days diesel overhaul. 5) Position KZ 2694, 3 plus 6 torpedoes, 174 cbm, High Sea State. All naval squares.

20.12.42	On 1 December 1942 at 00.00 hours DGZ Kenngruppen Book No. II to Short Signal Book 1941 goes into effect. At the same moment "Kenngruppen Book No. I goes out of effect.

21.11.42	All boats: A) An accumulation of questions about troubleshooting Fu.M.B. systems, burden the communications circuits in the long term. B) The largest number of reported faults could have been eliminated without any questions. Some boats have done noteworthy things. C) The Fu.M.B. is in principle a simple receiving system. Maintenance and care is a prerequisite for operational readiness. Most of the malfunctions are recognized and fixed. Improvements have been made. D) The following malfunctions are mostly observed: a) Malfunction b) Cause c) Correction, 1)a. Resistor burnout. b) Damaged capacitor. c) Capacitor and resistor replacement. 2)a. Crackling sound b) Contact fault, cold solder, loose tube sockets, line breaks. c) Analogously. 3)a. Anode fuse blows. b) Capacitor penetration c) replacement or removal. 4)a. Antenna cable break b) often improper handling. c) Repair cable as far as possible, shorten, replace. If possible, do not loosen the sealed end when replacing. Horizontal reception comes before vertical reception. Horizontal antenna receiver limits vertical. 5)a. Displaced tuning. b) Interference in the receiver and the like. c) Fix [illegible word] dial at 100 degrees. Check by fixed point with short wave transmitter. E) No fear of repairs, not so helpless, pay attention to the exact length and position of the individual parts before the operation. Take capacitors and resistors from the Radione, Ele, Föhn, Bell system and the like possibly spare parts as far as possible from supplier. F) Always report occasionally when the Fu.M.B. is operable again.

21.11.42	To boats in the south Atlantic: Attention is drawn to the consumption of fish as a vitamin source. All tropical fish except for box fish are consumable. Skin injuries caused by stings are harmless. Shark are basically water. Prepare fish food immediately.

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20.11.42	To all boats: When introducing ammunition into the flooding mechanism, ensure that the metal cap of the cartridge shows outboard, because otherwise with ejection it hangs up and closing the outer door is not possible. Provide Instructions: "Use of Bolde" with a corresponding note.

22.11.42	There follows radio messages with corrections for Standing War Orders Communications Regulations. They only come into force by special order. As a special designation and numbering, the radio message receive the password "Nelke" with their sequence number
	I. Nelke. 1) Order 200 Paragraph 8 delete wording from Paragraph B and C and put at B: 2 hours after first sending, at C 7 hours after first sending. Below put new: D) 12 hours after first sending. E) 20 hours after first sending. F) 28 hours after first sending. 2) Delete Paragraph 9 etc. after Radio Message and insert: are also repeated 1 and 3 hours after the initial sending.
	II. Nelke. 3) Delete Paragraph 10 Letters A and C at Number 8, delete 5 put 6. 4) New Paragraph 10 B) For Circuits with difficult traffic conditions the day's roll call can be used on short or long wave. Radio message of the last 24 hours are repeated there.
	III. Nelke. 5) Order 201 Paragraph 20 /Page 2 below put: Continuous operation from 00.00-24.00 hours. Day's roll call 00.00-24.00. Page 3 change duration to daytime operation. Change duration Previous Day's roll call to 00.00-02.00 hours. At the end of Program times put in: Day's roll call 00.00-02.00 hours. 6) Order 202 Page 2 at the top put new: Continual operation 00.00-24.00 hours, Day's roll call 00.00-03.00 hours. In the evening change the duration in daytime operation, change the afternoon roll call from 13 to 14.00 hours. 7) Order 203 Paragraph 4 B with continuous operation put after 24.00 hours: Daily roll call 01.00 to 03.00 hours.
	IV. Nelke. After Program time strike the words: when sharing a Circuit. As new paragraph insert: Daily operation 11.00-23.00 hours, Morning roll call 08.00-10.00 hours. Midday roll call 18.00 hours. Evening roll call 01.00-05.00 hours. Strike Program times under America I and II and put under I new: 10.00-12.00 hours, 14.00-16.00 hours, 18.00-20.00 hours, 22.00-24.00 hours, Day's roll call 03.00-06.30 hours. As new Paragraph 4) c. put: Very Low Frequency America II transmitter Pando 2. Continual operation: 00.00-24.00 hours, Day's roll call 03.00-05.00 hours. Day operation: 13.00-01.00 hours, Morning roll call 20.00. Evening roll call 03.00-05.00 hours.
	V. Nelke. Program times America II: 12.00-14.00, 16.00-18.00, 20.00-22.00, 00.00-02.00 hours. Day's roll call 06.30 to 10.00 hours. Change paragraph 8 to 5. Appendix 2 to Order 203 passes out of effect, remove and destroy. For repetition Order No. 200 applies. 8.) Order 204 Paragraph 2 B change Day's roll call to 00.00-02.00 hours. 9.) With Very Low Frequency transmitters there are 3 different operating modes: continual operation, day operation, Program times. The respective ordered operating mode must be crossed out with a pencil in the order.
	Last Nelke: When these corrections come into force please check: Order 201 Day operation. 202, 203 for both Circuits and 204 Program times.

26.11.42	From "Ibbeken" On 21 November night two-fan shot square KY 9693 on freighter course 70°. Up to 26 November in area KY 95 to JJ 15 nothing seen. Return transit via GR 76 and FU 75, 145 cbm, 2 plus 4 torpedoes, position JJ 2583. All naval squares.

27.11.42	Detection [radar] reporting by Radio Message in the future only insofar as they are important for other boats (warning of locating by destroyer of air at convoy) or if especially noteworthy or a new type of locating exists.

29.11.42	You are reminded Kenngruppen Book No. II for Short Signal Book 1941 goes into effect on 1 December at 00.00 hours.

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29.11.42	From "Ibbeken": 1.) Sank 27 November "JEREMIAH WADSWORTH" 8000 GRT American new construction. JJ 2557, course 0°, supposedly from New Orleans to Bombay. 2) Fuel oil 131 cbm, is enough for return transit at economical speed. Still 1 plus 1 torpedoes. Position GR 8846. 3) Very Low frequency 15.22 KHz with all program times no reception. All naval squares.

30.11.42	Attack with FAT torpedo is announced by the shooting boat with a FAT Warning. The boat keeps ready, as soon as the convoy is near, the short signal " U F R C ": I intend to attack with FAT ready and when it starts to attack, about 5 - 15 minutes before the shot, sends it on the appropriate short wave. 2. When receiving FAT Warning the not sending boat, if not in direct attack, runs at maximum speed from the endangered area, i.e. to a forward position. Minimum distance 100 meters in aft positions stay at a minimum distance 200 meters from the outermost ships of the convoy or if this is not possible, dive to at least 20 meters. 3.) Validity period of FAT Warning 30 minutes. If attack is delayed shooting boat must repeat FAT Warning. 4.) FAT torpedoes are only to be used at night, there is no requirement for submerged attack. 5.) The cases in which the FAT is actually a danger are rare. The above instruction does not change anything in our proven principles of reckless attack.

01.12.42	From now on convoy circuits will be used as needed. 1.) Circuit "Diana" short wave: 19.00-10.00 hours WO - 3920 KHz 10.00-17.00 hours PF = 6675 KHz. 17.00-19.00 hours ND 4965 KHz. Very Low Frequency Bordeaux 15.66 KHz Program tines: 02.00-03.00 hours, 05.00-06.00, 08.00-09.00 hours and once every 2 hours each hour. Serial Nos. 700-800.
	2.) Circuit "Hubertus" short wave 21.00-09.00 hours BA = 4020 KHz and 09.00-11.00 hours OB = 5585 KHz, 11.00-12.00 hours RA = 7845 KHz 12.00-18.00 hours SC = 11165 KHz, 18.00-19.00 hours RA as above, 19.00-21.00 hours OB as above. Very Low Frequency until further notice "Diana". Serial Nos. 800-900. 3.) Start of the circuit is ordered for individual boats or groups through guidance. Other boats are not allowed to use the frequencies of convoy circuits as transmission frequencies. 5.) Boats in the convoy circuit may also use frequencies from other circuits as a transmission frequency. Enemy reports that are important for other boats must in any case first be placed on convoy short wave, then, if the message has not been acknowledged, be placed on another wavelength for contact.

01.12.42	Standing Order 21 1.) Due to the bottom mine danger only proceed in shallow water up to depth 50 meters with bottom mine escort. 2.) Maintain exact distance from escort: a) 300 meters behind Sperrbrecher (keep the track buoy at the bow) b) 100 meters behind the center of the two aft abeam of one another towed buoys. With SSG and KFRG vessels. c) 200 meters behind towed, small unmounted vessels. With HFG vessels. 2.) If 2 U-boats are attached to the ground mine escort, the second U-boat will keep as close as possible behind the one ahead.

02.12.42	Various recent reports and accounts suggest that orders concerning Group Circuits (Order 207, but especially B2) were not observed. Croup Circuit with breaking of homeland communications are the only possible quick communication between boats operating together, which is crucial for success, especially on convoys with strongly changing combat conditions.

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02.12.42	Standing Order No. 4 Frequently reported alleged Pistol failures could be due to damaged Pistols. Therefore: 1.) Avoid rough loading of the torpedo, which can shear off retaining bolts and damage pistols. If the loading gear is used properly, no rough loading is possible.
	2.) After bomb detonation in the immediate vicinity of the boat, above all with opened outer tube doors, examine pistols as possible according to leaflet Pi G 7 H Paragraph 6 and possibly replace it with reserve Pistol.

08.12.42	From Ibbeken: 1.) On 4 December square GQ 5129 circle runner and miss on freighter 5000 GRT, course 60°. 2.) Experience like "Lüth" cause suspected: a) Larger U-boat length and due to this unfavorable relationship to Sea State length. b) Very sensitive cumbersomeness suggests low lateral stability. c) Difficulty on all courses before and into the seas. d) Effective relief by changing the diving plans expected only with significant enlargement and higher rudder speed. e) With increase of attack depth by one meter significantly better situation determined. 3.) Out of torpedoes. Position square GF 3957, 111 cbm, all naval squares.

14.12.42	The following lamp signals for English convoys from newly captured documents: I) Red: Torpedo hit (in addition a minimum of 2 white stars). II) Green flashing: Aircraft closer to the convoy. III) Ref green: Turn, turn to port. IV) Green red: Turn, turn to starboard. V) Red red: Maneuvering difficulty. VI) Red red green: Danger turn 45° to port execute when the lights are extinguished and red star. VII) Green red: As above to starboard green star. VIII) Red green red: Turn 20° to port, blinking: Turn 50° to port. IX) Green red green: As above to starboard. X) Red red red: Cancellation. XI) Green green green: Begin or stop zigzag.

14.12.42	Correction to Chart Encoding, Address book. 1) Attach extract from B.d.U. G.K.Dos 2872 to Page I, in Paragraph 4) strike 23 and put new 11 and 12.U-Flottille. Delete in distribution list 23 put 11 and 12. New put below OKM Seekriegsleitung Chef MND III Group Nord: Admiral Nordmeer. 2) Page 4a in all four columns behind Bruno Dora put division line Anton Bruno, behind Bruno Emil division line Anton Caesar. 3) Correction is in effect immediately.

15.12.42	To all boats: In the event of a failure of the negative buoyancy tank, negative buoyancy must be addressed with the deep pumping regulator. In the event of failure of a negative buoyancy tank on a large boat 3 tons on a medium boat 2 tons. With failure of both negative buoyancy tanks accordingly. When diving start blowing in good time. The frequent failure of negative buoyancy tanks due to leaky flood valves should not noticeably reduce the crash dive readiness of endangered boats and must only due to further difficulties by forward bulkhead cracks etc. lead to the cancellation of a task.

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16.12.42	Return harbors are: Nazaire for U-465 "Manseck" "Trojer" "Schnoor" "Stiebler" Pallice for "Thurmann", Brest for "Walkerling" "Ibbeken", Bordeaux for "Gysae" "Lüth", Lorient for U-129 "Staats".

16.12.42	1.) Today 2 steamers naval square FL 53 course 240° and 220°.
	2.) Question return harbor Brest or Bordeaux. Assume belong to 12. U-Flottille. 92 cbm. From Ibbeken.

16.12.42	From Ibbeken: In Serial No. 357 must mean 12. U-Flottille.

16.12.42	To Ibbeken: Return harbor remains Brest.

16.12.42	To all boats: 1.) The enemy uses locating gear [radar] with the greatest caution. Locating impulses for 4 to 20 seconds. On detecting target and attacking slowly reducing Volume to disguise approach. 2.) Aircraft locating horizontal 137 cm 219 MHz, vertical 136 cm 222 MHz, 132 cm 227 MHz.

19.12.42	1.) U-boat Communications Order Gruppe Nord N.3 Paragraph 2a correct as follows: 2.) Wavelength U1 : 3750 KHz switched continuously. 3.) Wavelength U2 : 7510 KHz from 08.00 to 17.00 hours, 7000 KHz from 17.00 to 08.00 hours. 4.) Wavelength U3 : 5400 KHz from 08.00 to 17.00 hours 8320 KHz from 10.00 to 15.00 hours 3000 KHz from 17.00 to 08.00 hours. 5.) U-boat Circuits if necessary wavelengths lower frequency than 3750 KHz receive side. Evening frequency remains constant 3750 KHz and above. 6.) Correction comes into effect immediately. 7.) U-boat Communications Order Gruppe Nord is found in the back of B.d.U. Communications Instructions.

20.12.42	1.) From 20 December 10.00 hours Circuit America I is shut down until further notice. 2.) At the same time Circuit "Diana" is activated. Very Low Frequency Paris II Program time like America I in according to War Order 203. 3.) Wavelength switching "Hubertus" Circuit changed at the same time, as ordered in Radio Message of 17 December.

21.12.42	Hubertus Circuit since 20 December 10.00 hours 1.) Short wave: 21.00 to 09.00 hours KW 4601 KHz, 09.00 to 11.00 hours NU 5425 KHz, 11.00 to 12.00 hours CA 7770 KHz, 12.00 to 18.00 hours CG 13767 KHz, 18.00 to 19.00 hours CA, 19.00 to 21.00 hours NU.
	2.) Very Low Frequency Bordeaux 15.66 KHz Program time 02.00 to 03.00 hours, 05.00 to 06.00 hours, 08.00 to 09.00 hours, 11.00 to 12.00 hours, 14.00 to 15.00 hours, 17.00 to 18.00 hours, 20.00 to 21.00 hours, 23.00 to 24.00 hours.
	3.) Serial Nos. 801 to 900. Control DÄP remote station RZÜ.

21.12.42	Circuit "Diana" since 20 December 10.00 hours 1) Short wave: 19.00 to 10.00 hours WO 3920 KHz, 19.00 to 17.00 hours PF 6675 KHz, 17.00 to 19.00 hours ND 4965 KHz. 2.) Very Low Frequency Paris II 21.05 KHz Program time like America I in accordance with War Order 203. 3.) Serial Nos. 701 to 800. Control DÄP remote station ÄDA.

21.12.42	Wavelength designation in Radio Message 1215/21 of 1931 hours must mean NU.

21.12.42	Before each tube flooding pay special attention to tightening of the permanent ventilation and heater plugs. Otherwise there is danger of water intake at great depth with open outer tube doors.

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21.12.42	1) Italian "VULKANIA" and "SATURNIA" heading north in ES 30, "AROELA" on westerly course in EH 60. 2) Swedish "KASAHOLM" and "MALMÖHUS" homebound in BD. All naval squares, Do not attack.

22.12.42	To all: Boats equipped with Pi II. Due to suspected reduction of ignition depth of the Pi II at the end of the running track with shooting range greater then 4500 meters with heated Eto set depth setting one meter shallower than specified in operating instructions Enclosure 6 Paragraph F. However, do not go below the shallowest depth setting released so far. With unheated Eto no change in depth setting within the allowed range. Flotillas ensure that departing boats are informed. Correct operating instructions. Additionally repeat for Mediterranean.

22.12.42	Radio messages follow with the password "Rose" and a preceding number that indicates the sequence. The radio messages "Rose" contain corrections to the message orders and and go into effect with the corrections in accordance with Radio Messages "Nelke" on December 25th. 14.00 hours.
	I.) "Rose" 1.) The corrections to the B.d.U. Communications Instructions in accordance with the "Nekle" Radio Messages of 22 November go into effect on 25 December at 14.00 hours. 2.) Nelke Paragraph 6 is to be added as follows: Order 202 page 2 under Program times change 08.00 to 09.00, 16.00 to 17.00 hours, 21.30 to 22.00 hours and put there under Day's roil call 02.00 to 04.00 hours.
	II.) "Rose" 3.) contrary to Paragraph 9 of the "Nelke" correction Very Low Frequency transmitter works on all Circuits from the above time in Program time operation. Operations mode Program time must be checked in all orders. 4.) In Order 204 under Very Low Frequency strike Bordeaux with wavelengths given and put Paris I - 15.22 KHz. 5.) Circuit Hubertus and Diana are in operation. Frequencies, operating modes and Very Low Frequency operation are learned from Radio Messages of 21 December. This information is to be attached as Preliminary Order 205.
	III.) "Rose" 6.) Insofar as boats at sea have Reprint of Communications Instructions for U-boats (NB U-boats) on board, these are to be corrected in accordance with Paragraphs 3 to 5 above. Order 205 is available in this reprint, but is overtaken by the use of two Convoy Circuits with regard to a specification under Paragraph II D to F and supplemented accordingly by the radio messages of 21 December.
	IV. "Rose" 7.) With these corrections old Communications Orders and new NB U-boats match in terms of content. 8.) It is pointed out that according to the "Nelke" corrections to Order 200 concerned schedules of the Short and Very Low Frequency repeats for all circuits has changed.

23.12.42	Standing Order No. 22 Carry out fueling in bad weather with Sea State 6 with loose hose of 184 meters long without towing line (first fuel oil, then separately lubricating oil). Tanker run with E-motors LF against or with the seas. Send hose with extra line or by means of buoy on working line to let the hose be fished out. Attach 3 to 4 buoys to the hose. By this sinking is impossible. Taking over boat runs with enough leeway about 20° slightly staggered.

24.12.42	To all boats: On U-67 an explosion of an over deck canister occurred while opening. Suspect was from fuel filling of the torpedo under the effect of heating which was ignited by sparking from the edge of the lid rubbing or using tools to open it. Even though it is likely to be a one-off case, be careful when opening the lid.

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25.12.42	Amend instructions for the General Message encoding procedure page 19 under number 89 as follows: Before encrypting a message already encrypted according to the M-Officer or M-Staff procedure, insert a filler word with at least 4 and no more than 8 letters after the four-digit encrypted group Paragraph 85 (5). Simple, non-compound words are to be used as filler words, e.g. Lexikon, Plakette and others. The last group has to be filled in with the first letter of the filler word with four digits, e.g. Filler word Locher (6 letters) must be filled in with the capital letter Lucie Otto. These filler words are like the addresses and signatures etc. to be encrypted using method M General.
	2.) When decrypting: The received radio message must be completely decrypted. The filler word at the end gives you the opportunity to check whether the sentence has been deciphered correctly. The filler word must be crossed out before the decrypted radio message is passed on to the officer or via the secure teletype network. Additionally: In effect from 26 December 12.00 hours. (Standing War Order).

25.12.42	Standing War Order correction Nelke comprising consecutive Nos. 1 to 9 are repeated. 1) 200 Paragraph 8 delete wording from Paragraph B and C and put at B: 2 hours after first sending, at C: 7 hours after first sending. Below put new: D) 12 hours after first sending. E) 20 hours after first sending. F) 28 hours after first sending. 2) Paragraph 9 strike text after Radio Message and insert: are also repeated 1 and 3 hours after the initial sending. 3) Paragraph 10 strike letters A and C at Number 8, strike 5 put 9. 4) New Paragraph 10 B) For Circuits with difficult traffic conditions the Bay's roll call can be used on Short or Long Wave. Radio message of the last 24 hours are repeated there. 5) Order 201 Paragraph 2B Page 2 below put: Continuous operation from 00.00-24.00 hours. Day's roll call 00.00-02.00. Page 3 change duration to daytime operation. Change duration Evening roll call to 00.00-04.00 hours. At the end of Program times put in: Day's roll call 00.00-02.00 hours. 6) Order 202 Page 2 at the top put new: Continuous operation 00.00-24.00 hours, Day's roll call 03.00 hours. In the evening change the duration in daytime operation, change the midday roll call from 13.00 to 14.00 hours. 7) Order 203 Paragraph 4 B, with continuous operation put after 24.00 hours: Day's roll call 01.00 to 03.00 hours. After Program time strike the words: when sharing a Circuit as new paragraph insert: Daily operation 11.00-23.00 hours, Morning roll call 08.00-10.00 hours. Midday roll call 18.00 hours. Evening roll call 01.00-03.00 hours. Strike Program times under America I and II and put under I new: 10.00-12.00, 14.00-16.00, 18.00-20.00, 22.00-24.00 hours, Day's roll call 03.00-06.30 hours. As new Paragraph for Cäsar. put: Very Low Frequency America II 12.00-14.00, 16.00-18.00, 20.00-22.00, 00.00-02.00 hours. Day's roll call 06.30-10.00 hours. Change paragraph 8 to 5. Appendix 2 to Order 203 passes out of effect, remove and destroy. For repetition Order No. 200 applies. 8.) Order 204 Paragraph 2 B change Day's roll call to 00.00-02.00 hours. 9.) With Very Low Frequency transmitters there are 3 different operating modes: continual operation, day operation, Program times. The respective ordered operating mode must be crossed out with a pencil in the order. When these corrections come into force please check: Order 201 Day operation. 202, 203 for both Circuits and 204 Program times.

27.12.42	1) "Ibbeken" report position immediately. 2) Serial No. 382 is settled will not be repeated.

27.12.42	ßß My position is naval square EH 36.

27.12.42	Position "Ibbeken" naval square EH 36.

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27.12.42	Standing Order No. 23: From 1 January 1943 Red Cross ships are marked as follows: On both sides of the ship hull the inscription C-International. Forward and aft of the inscription, as well on the fore and after deck each one red cross. In the after deck can instead use a vertical shield, on both sides painted with the red cross. All markings on a white background. Red cross must be illuminated at night, this is optional for inscription. After receipt of the cover sheet for Standing War Order No. 128 this order passes out of effect.

27.12.42	From "Ibbeken" One Junkers-compressor failed. Cannot be repaired. Second Junkers compressor continual repairs. Spare parts almost consumed. Failure of E-compressor not acceptable.

27.12.42	"Folkers" suggest meeting point with "Ibbeken". Ibbeken remove E-compressor parts (See Serial No. 371 of 26 December) and have ready. After delivery report.

27.12.42	From "Folkers" 1) Take over spare parts from "Witte". 2) Meeting point with "Ibbeken" 30 December 12.00 hours DS 6262. 3) In damaged Fu.M.B. and so forth.

28.12.42	From "Folkers". Reception is assured but low Volume likely. Meeting with Ibbeken settled. 2) If "Achilles" and so forth.

28.12.42	"Ibbeken" give Eisbär Orders to "Clausen". For this "Clausen" give meeting point as soon as possible. "Ibbeken" will be in in Naval square DT 47 29 December at 08.00 hours.

30.12.42	1) The letter Recognition Signals of the sea air forces is renamed into: Coastal Recognition Signal (at the same time Recognition Signals for merchant ships and sea air forces). Command word and abbreviation is: "ES - Küste"
	2) Letter Recognition Signals of the sea forces: Command word and abbreviation is: "ES - Schiff"
	3) Provide information on Recognition Signal rules and excerpt from Recognition Signal rules. Final correction follows.

31.12.42	To all: To avoid accidents caused by burns and partial explosion of torpedo petroleum at G 7 A in upper deck containers, proceed as follows:
	1) With torpedo supply at sea carry G7A in over deck canisters without fuel, air and ignition cartridges. Fuel must be carried in canisters. 2) Make sure that no rags or twist [not understood term] remains in the canister. 3) Before opening, carefully vent the container using the vent screw in the cover. 4) Do not stand in front of it when loosening the container lid. 3) While opening smoking forbidden.

01.01.43	Note:
	1) Commencement of the Convoy Circuit is ordered for individual boats or groups by Leadership. 2) Other boats are not allowed to use the frequencies of the Convoy Circuits as transmitter frequencies. 3) Boats in the Convoy Circuit may also use frequencies of other Circuits as transmission frequencies. Enemy reports that are important for other boats must in any case first be sent on the Convoy Shortwave. Then, if Control has not acknowledged, place it on another wavelength for Leadership.

01.01.43	1) "Geissler" and so forth . 2) "Achilles" and so forth. 3) "Ibbeken" after leaving "Clausen" report "Yes" and at the same time switch to Ireland Circuit.

02.01.43	"Clausen" reports by Short Signal Volume 4: Since 1 January 00.00 at ordered meeting point.

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02.01.43	From "Ibbeken" To Serial No. 349: Up to now no meeting point ordered. Serial Number list complete. Position naval square DG 6391. 49 cbm. Request giving by "Lüth" or "Gysae".

02.01.43	Meeting point "Ibbeken" - "Clausen" settled. Continue southerly or homeward transit. More to follow.

02.01.43	"Ibbeken" 3 January 08.00 hours switch to Ireland Circuit. 2) Neutrals and so forth.

03.01.43	From "Clausen": Radio Message 1927/2353 received by chance. Here Ireland Circuit 386 cbm, DG 3834.

03.01.43	To all: With regard to the re-approved heating and ventilation for Etos, pay particular attention to the heating plug and permanent ventilation lock before flooding the tube, i.e. tighten fasteners well. Inadequate closure on 2 boats with outer tube doors flaps not completely closed at greater depths caused severe water ingress due to the rubber seal flying out.

03.01.43	"Clausen" immediately switch to America II Circuit. Error here.

03.01.42	Supplement to "Standing Order No. 22" In very bad weather, the hose can be taken through the conning tower hatch on the oiled boat and pumped into the bilge in urgent cases. Stretch the line to the hose to let go when the boats break apart. Close the oil hose with the tap.

03.01.43	To all: In Radio Message from 3 January mentioned release of heating and permanent ventilation only for Eto with opted depth apparatus (membrane duct). The identifying mark of these torpedoes are the green circle around the cover plate and the green cross on the cover plate of the depth apparatus. Flotillas instruct departing boats.

04.01.43	Standing Order No. 24. All reports must be considered:
	1) How well are the boats and Leadership informed of the situation? 2) What do Leadership and boats have to learn from a new situation? 3.) Can submitting a report now and here be detrimental to other boats? If yes, it my report so important, that I must accept this? 4) What if I decide to make a Radio Message for a particular reason, also important for Leadership, e.g. Short Signal weather report, fuel, torpedo inventory, situation and success message, boat condition. 5) After sending the report: Did I express myself as briefly, but above all as clearly as possible, or can I be misunderstood, taking into account what the others know or do not know.

04.01.43	Return harbors: "Pallice" for "Kapitzky" and so forth. "Bordeaux" for "Ibbeken" not "Brest" as ordered on 16 November.

05.01.43	1) "Zetsche", "Steinäcker", "Strelow", "Ibbeken", "Thilo" tomorrow at 08.00 hours switch to Coastal Circuit. 2) "Langfeld" and so forth.

06.01.43	The following new Signature Groups will go into effect place on 8 January at 12.00 hours for Short Signals and Short Signal weather reports. Old Groups go out of effect at the same time. "U-66" - AB- and so forth "U-178" -CD- and so forth.

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06.01.43	To all boats: Despite orders to operate on a convoy at highest speed and stick with it, two boats broke off the operation on their own after holding contact for about 30 hours, without reporting immediately. As a result these two boats fell out of an intended reconnaissance line with 6 other boats. In order to avoid such consequences of incorrect considerations by Kommandanten, the following is ordered in principle: Standing Order No. 26 1.) If an operational order of leadership cannot be carried out, or if it has to be aborted during its execution due to lack of fuel, damage to machinery, personal contact with the enemy, excessive defense, heavy seas, this must be reported immediately by means of a Short Signal or Radio Message. Also short-term malfunctions for if the situation is of importance for the Leadership, 2.) An operational order is binding, its execution may not be abandoned despite the loss of contact, weather deterioration and so on, as long as no order is issued by Leadership.

06.01.43	"Ibbeken" report position immediately.

06.01.43	ßß from "Ibbeken" my position is naval square CG 12.

06.01.43	To Radio Message To all boats (above) 3.) If a Kommandant considers on the basis of the combat situation or for reasons that are probably not known to Leadership, he must report this immediately, but continue to operate. breaking off only on orders of Leadership, or action according to Paragraph 1.

07.01.43	1.) U-154 bearing transmitter Lorient runs. See Serial No. 20.
	2.) Position "Ibbeken" is naval square CG 12.

08.01.43	It is once again highlighted, that the on 6 January announced new Signature Groups for Short Signals and Short Signal weather reports, go into effect 8 January at 12.00 hours.

07.01.43	Radio admonishment from radio Control: 1.) Short Signals were in general sent much to slowly and drawn out. This makes receiving difficult. Additionally, this type of delivery offers the enemy good bearing possibilities. Sending speed should be 60 to 70 characters per minute. 2.) Repeat of a line of text, a group, one letter wrong, do not need to be corrected by the boat, or sent another time. A wrong letter can always be garbled.

08.01.43	U-178: Escort will be at Point "Gabel" on 9 January at 07.00 hours. 12. U.-Flottille

08.01.43	From "Ibbeken" Request Radio Beacon Group III

09.01.43	Received from "Ibbeken" Request Radio Beacon Group III immediately.

09.01.43	U-178: Radio Beacon Group III runs from 02.40 hours until lightness. 12. U.-Flottille

09.01.43	From "Ibbeken" Request bearing signals from escort vessels.

09.01.43	From "Ibbeken" On 650 meters no bearing signals. Question bearing wavelength.

09.01.43	From "Ibbeken" Have been taken in convoy.