U-boat Archive - U-66 Messages

War Patrol

16 January 1944 to 6 May 1944

Oberleutnant zur See Gerhard Seehausen

Key and notes to translated message forms

With great appreciation to cryptology historian/researcher Mr. Ralph Erskine


	Date of message	US Navy Security Classification	(unknown)

German date/time of transmission/serial # (Serial # was allocated when signal was being sent by shore station. A different serial # was given for each radio circuit (eg. Series 1 or 4, etc))	Group count (number of four letter cipher groups in original German signal)	Cipher indicator group showing which cipher was being used ( eg. Triton (Shark) or Bertok) and the group for obtaining message setting (starting position of rotor for that message)	Allied name assigned to U-boat radio circuit Series’ 1, 2 3, etc. were allied designations for various U-boat radio circuits. The circuits included the Ubootsküstenschaltung (for the Bay of Biscay and the northern approaches to the North Atlantic ), Irland (for U-boats in the north and middle Atlantic ), Amerika (for those in the north western Atlantic, central Atlantic and South American coast), Afrika (for the Indian Ocean ), and Diana and Hubertus. From time to time they were expanded and renamed (eg. Amerika I and II ).

From:

To:

Message text

Text within (( )) are US Navy translator's notes

Offizier ( ) was a form of doubly-enciphered Enigma. Additional plugboard settings were used, which were generally valid for 10 days in a given month.

Disguised Naval grid square reference, disguised using ‘Adressbuch’ (later captured from U 505)

US Time of intercept (GMT)

Frequency

US time and date of decrypt at Op-20-G


	23 JANUARY 1944	HUSH SECRET	GP EHB

1134/23/48	25	UTTL HWZY	SERIES 0

NEW HEADING FOR SEEHAUSEN ((66)) IS #80 OF LARGE SQ EAST OF DISGUISED SQ BLUE CJ (POSSIBLY ET; THEN #EU 80 = 03.45N - 07.45W 'C' - TAKARADI AREA)).


	TOI 1107 Z	16.8 KCS	0218/24


	27 JANUARY 1944	HUSH SECRET	HK ENB

0532/27/4	99	QJEC JRJT	SERIES 0

AT 0507A S/S FROM SEEHAUSEN RECEIVED JUST OFF 04 METERS SIGSTR 3 - 5. POSITION IS BE 8558 ((44.09N - 13.15W)).


	TOI 0819Z	16.8 KCS	0737/27


	28 JANUARY 1944	HUSH SECRET	MBL EHB

1840/28/192	177	TKQJ ATYH	SERIES 1

TO:	SEEHAUSEN ((66))

HENKE'S ((515)) FINDINGS ((PREVIOUSLY TRANS AS 1) IN MSGS 1238/24/354 AND 1315/24/355 BOTH JANUARY, SERIES A, FOR SCHROETER ((123)).


	TOI 2002 Z	16.55 KCS	1100/30


	29 JANUARY 1944	HUSH SECRET	ML EHB

0835/29/725/201/61 41		KUQR DNNY	(SERIES 7, 2, 0)

GROUP STUERMER, SCHWEBEKE ((714)), BRENEN ((764)), SEEHAUSEN ((66)) HEAD FOR BF 50 ((46.57N - 04.45W 'C')) AT MAXIMUM MAINTAINABLE SPEED WITHOUT CONSIDERING A/C LANDING GROUP SIGHTED.


	TOI 0825Z	6290 KCS	1031/30


	29 JANUARY 1944	HUSH SECRET	ML V

1120/29/104/67/729 61		MXRE DZHW	(SERIES 1, 0, 7)

1) INVASION REPORT CLEARED UP. NOT LANDING BOATS BUT NEUTRAL FISHING STEAMERS.

2) GROUPS HINEIN AND STUERMER SUBMERGE; FURTHER ORDERS FOLLOW.

3) OUTGOING BISCAY BOATS, ALSO SCHWEBKE ((714)), BREMEN ((764)), SEEHAUSEN ((66)), CONTINUE OUTBOUND CRUISE.


	TOI 1135 Z	9970 KCS	1036/30


	4 FEBRUARY 1944	HUSH SECRET	MBL EMB

1659/4/186/398/298 25		BDNP BSUH	SERIES 1, 2, 3

SEEHAUSEN ((66)), WUNDERLICH ((IT 22)) AND U-1062 ((ALBRECHT II)) GUARD AMERICA 2 AT 0800A/5/2.


	TOI 1627Z	7910Z	2104/4


	19 FEBRUARY 1944	HUSH SECRET	RP H

2303/19/304	160	TOPN BJAM	SERIES 3

FROM:

SEEHAUSEN ((66))

1) 0730A/19/2 IN BLUE XZ 9267-55 ((PROBABLY ET 6267 = 07.15N - 12.57W AND #6255 = 07.21N - 13.09W)) ESCORT JERVIS DESTROYER WITH NAXOS.

2) HE CONSTANTLY TURNING, 11 TO 2 M ((OR KNOTS)) OBTAINED MOST FAVORABLE POSITION. ((IN SQ)) 60 ((PROBABLY 6260 = 07.21N - 12.51W 'A')) FIRED GOT AWAY AT ((SQ)) 55 ((PROBABLY #6255 = 07.21N - 13.09W)), DEPTH 4.

3) STAYED ON SURFACE, NO DEFENSE MOVEMENTS BY DD. 12 MIN END-DETONATION.

4) ACCORDING TO TRIALS AT GOTENHAFEN WAS A SURE SHOT. PRESUME TROPICAL INFLUENCES, WATER TEMP 28, PRONOUNCED STRATIFICATION, VARYING HYDROPHONE CONDITIONS.

5) 14 PLUS 2 TORPEDOES, 157.5 CBM, CONSIDER ASSIGNMENT OF SEVERAL SUBS TO AREA AROUND MAIN HARBOR GREEN JJ 76 ((PROBABLY EK 46 (DAKAR) = 14.33N - 17.39W 'B')) AND BLUE XZ 68 ((PROBABLY ET 38 (FREETOWN) = 08.15N - 13.09W 'B')) PROMISING.

D/F

07.30N - 14.00W (U1-40) CASE 20/10/03

TOI 0252Z 14540 KCS


	TOI 0251Z	6795 KCS	1900/21


	24 FEBRUARY 1944	HUSH SECRET	GP EJC

2144/24/358	40	ATSM FNYB	SERIES 3

TO:	SCHROETER ((123)) AND SEEHAUSEN ((66)):

ENGLISH STEAMER 'EMPIRE BUCKLER' REPORTED AT 1514A FROM #ES 3680 ((08.51N - 20.21W)): AM BEING PURSUED.


	TOI 2114 Z	4795 KCS	1009/25


	2 MARCH 1944	HUSH SECRET	GP EHB

0334/2/343	155	PIHF EEAQ	SERIES 3

SER NO 341 COMPLETED. MSG 2243/1 FROM SEEHAUSEN ((66)) GARBELED. CONJECTURED CONTENT:

1) 262/2 EV 7154 ((04.39N - 03.21W)) SANK 5000 TON STEAMER FROM EAST-BOUND CONVOY, SPEED 7.5; ANOTHER HIT AND SINKING NOISES HEARD.

2) HEAVY D/C AT 2A PLUS 10. SLIGHT DAMAGES.

3) 1/3 EV 5877 ((05.09N - 00.03W, GOALD COAST)) INDEPENDENT WITH ESCORT, EAST COURSE, SPEED 8 SANK 7000 TON STEAMER.

4) 140 CBM. 9 PLUS TORP.

5) SCHROETER ((123)) REPORTED 290 CBM ON 26TH*

6) MISSING SER NOS 67 OF 19/1, 4 OF 21/1. UNCLEAR 97 OF 26/1.

*CORRECTED TO READ 90 CBM ON 26/2 IN MSG 0515/2/344.


	TOI 333 Z	4795 KCS	1556/3


	2 MARCH 1944	HUSH SECRET	EM EHB

0530/2/38	82	XKTP QLEP	SERIES 0

EXTRACT FROM MSG 2243/1* FROM SEEHAUSEN ((66))

1) 26/2 SANK 5000 TON STEAMER FROM CONVOY, ANOTHER HIT AND SINKING NOISE HEARD.

2) 1/3 SANK 7000 TON STEAMER.

3) 140 CBM. 9 PLUS 2 TORP. SLIGHT DAMAGE.

4) SCHROETER ((123)) REPORTED 90 CBM ON 26/2.

*SEE 0334/2/343


	TOI 0536Z	4412 KCS	1525/3


	2 MARCH 1944	HUSH SECRET	E M H

0902/2/346	20	IKTL HRAA	SERIES 3

SER NOS REPORTED BY SEEHAUSEN ((66)) AS MISSING ARE COMPLETED FOR HIS SUB.


	TOI 0823Z	6790 KCS	1442/3


	2 MARCH 1944	HUSH SECRET	GP EJC

1119/2/347	84	HTFO PPOA	SERIES 3

TO:	SCHROETER ((123))

- - -OFFIZIER- - -

1) SEEHAUSEN (66)) RELAYED YOUR FUEL REPORT OF 26/2.

2) U-TANKER IS UNDER WAY. IN CASE BOAT'S CONDITION MAKES IT DESIREABLE, PROVISIONING IS PLANNED IN BLUE NM 90 ((POSSIBLY EG 80: 14.33N - 37.27W 'C')). ARRANGE DEPARTURE SO THAT THIS AREA WILL BE REACHED WITH AT LEAST 30 CBM.

3) DETAIL WILL FOLLOW AFTER PASSAGE REPORT OF TANNKER HAS COME IN.


	TOI 1123 Z	14540 KCS	0040/6


	7 MARCH 1944	HUSH SECRET	EM H

1332/7/715/39/473/310/568/256/139		77 BHZN ZVWX	SERIES 0, 1, 2, 3, 4, 5 & 7

THE FOLLOWING SINKING REPORTS CAME IN DURING PERIOD 1/3-7/3.

1) SEEHAUSEN ((66)) 3 SHIPS WITH 17000 TONS IN GULF OF GUINEA.

2) BLISCHKE ((744)) 3 SMALL TANKERS, 300 TONS IN BISCAY.

3) EICK ((510)) 5 SHIPS, INCLUDING 2 TANKERS, 39,000 TONS, FROM A CONVOY IN THE GULF OF ADEN

(CONTINUED) ((IN 1429/7)).


	TOI 1300Z	10300 KCS	2140/8


	8 MARCH 1944	HUSH SECRET	GP BJC

2119/8/716(ARC)	75	PNLT TVMF	SERIES ARCTIC

THE FOLLOWING REPORTS OF SINKINGS HAVE COME IN DURING THE PERIOD FROM 1/3 TO 7/3:

1) SEEHAUSEN ((66)) 3 SHIPS, 17,000 TONS IN THE GULF OF GUINEA.

2) BLISCHKE ((744)) 3 SMALL TANKERS, 3,000 TONS, IN TEH BAY OF BISCAY.

3) EICK ((510)) 5 SHIPS, AMONG THEM 2 TANKERS, 39,000 TONS, FROM CONVOY IN THE GULF OF ADEN.

(CONTINUED) ((IN 2146/8/718))


	TOI 2140 Z	23.08 KCS	0048/10


	10 MARCH 1944	HUSH SECRET	EM H

1241/10/188/354/411 68		TYIR QUCV	SERIES 1, 3 & 4

1) SEEHAUSEN ((66)) STATE IN YOUR NEXT SITUATION REPORT WHETHER YOU DESIRE PROVISIONING FOR RETURN.

2) BRANS ((801)) GUARD AMERICA 2 BEGINNING 0800A/11/3.

3) SPAHR ((178)), IN MSG CONCERNING COMLETED TRANSFER INCLUDE REPORT WHETHER WUNDERLICH ((IT-22?)) CAN CERTAINLY GET TO PORT WITHOUT REFUELING.


	TOI 1221Z	9970 KCS	2208/12


	20 MARCH 1944	TOP SECRET ULTRA	MBL V

1443/20/392/262/526/451 76		OXEA EETF	SERIES 2, 3, 4, 5

1) SCHMOECKEL ((802)), SEEHAUSEN ((66)), EICK ((510)), PFEFFER ((170)):

AS SOON AS YOU HAVE BEEN OBSERVED, REPORT SITUATION OR POSITION WITH FUEL SUPPLY. EICK REPORT ALSO WHEN YOU EXPECT TO ARRIVE IN #LF 64 ((PENANG)), SEEHAUSEN WHETHER PROVISIONING FOR RETURN IS NECESSARY.

2) REPORT TONIGHT: SPAHR ((178)), POSITION; PETERSEN ((541)), POSITION AND FUEL.


	TOI 1418Z	12215 KCS	0545/21


	28 MARCH 1944	TOP SECRET ULTRA	GP JLN

1729/28/397	20	NWLO BAKE	SERIES 3

TO:	SEEHAUSEN ((66))

REPORT TONIGHT SITUATION OR POSITION AND FUEL.


			0425/29


	30 MARCH 1944	TOP SECRET ULTRA	GP B

1837/30/228/45/323 18		SYUB TWVI	SERIES 2, 0, 3

POPP ((552)), SEEHAUSEN ((66)), AND KENTRAT ((196))

REPORT POSITION TONIGHT.


			0620/31


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0036/1/350/84	172	EBUN TUHT	SERIES 0, 3

FROM:

SEEHAUSEN ((66))

1) HAVE SUNK FOLLOWING:

5/3EW 8427 ((03.57N - 0727E)) 'JOHN HOLT' 3RD ERSATZ-BAU*, EAST COURSE, ZAGGING SHARPLY, SPEED 12. CAPTAIN AND 1 PASSENGER ON BOARD.

21/3 EW 7123 ((05.03N - 04.57E)) TANKER, 8400 TONS, TYPE 'BRITISH CONFIDENCE' NORTHWESTERLY COURSE, ZAGGING SHARPLY, SPEED 11. ESCORT 4 S-BOATS, ONE WITH RED LIGHT.

2) ACC TO STATEMENT OF CAPTAIN, ON 26/2 OUT OF CONVOY 'SILVER MAPLE' AND UNKNOWN FREIGHTER 5000 TONS ((WERE SUNK BY ME; SEE 0334/2 MARCH, PARA 1 AND 1031/1 APRIL, PARA 1)).

((PAGE ONE OF TWO))


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0036/1/350/84	172	EBUN TUHT	SERIES 0, 3
((CONTINUED))

3) AM BEGINNING RETURN. MY POSITION EV 8421 ((04.09N - 00.39W)). 73 CBM. 2 T 5'S LEFT, 2 A-TORPEDOES.

4) NEED 30 CBM AND 30 DAY'S PROVISIONS FROM STUDT ((488)).

5) OFFIZIER K - -

REQUEST GERMAN CROSS IN GOLD FOR OB LTN INGOLSCHEWSKI, SEEOBLTN ERWIG, MASCH OB MATT HARTMANN.

*LITERALLY 'REPLACEMENT CONSTRUCTION.' MAY POSSIBLY MEAN EITHER THAT SHIP HAS BEEN REBUILT 3 TIMES AFTER BEING DAMAGED, OR THAT ORIGINAL 'JOHN HOLT' WAS LOST AND REPLACED BY AN IDENTICAL SHIP OF SAME NAME WHICH IN TURN WAS REBUILT AND REPLACED.

D/F

03.30N - 00.00W (U2-42) CASE 01/10/07X

TOI 0218Z 6795 KCS

((PAGE TWO OF TWO))


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0143/1/352/137	223	MOVB OXRU	SERIES 3

FROM:

SEEHAUSEN ((66))

SITUATION ((OBSERVED DURING)) CRUISE OUT:

1) FROM SQ GREEN ZL 31 ((PROBABLY DU 81: 20.51N - 16.45W 'B')) PROCEEDED ALONG COAST ON STEAMER LINE ACC TO HANDBOOK* PART 3, AS FAR AS MAIN PORT #65 ((PROBABLY #EV 65: LAGOS)) OF THE LARGE SQ EAST OF GREEN JL ((PROBABLY #EU)). CONVOYS EVERY 7 DAYS IN BOTH DIRECTIONS. STRONG AND EXPERIENCED SURFACE DEFENSE WITH NAXOS AND ASDIC, INEXPERIENCED DAY AND NIGHT A/C WITH NAXOS.

2) INTERMEDIATE PORTS WITH CONVOY CHANGE, ONLY MAIN HARBOR GREEN JJ 88 ((PROBABLY #ET: fREETOWN)) AND MAIN HARBOR #73 ((PROBABLY #EV 73: TAKORADI)) OF LARGE SQUARE WEST OF BLUE ZF ((PROBABLY #EW)).

* 3RD EDITION ((PAGE ONE OF THREE))


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0143/1/352/137	223	MOVB OXRU	SERIES 3
((CONTINUED))

MAIN HARBOR GREEN ZZ 96 ((PROBABLY #EK 46; DAKAR)) NOT TOUCHED BY ENGLISH CONVOYS.

3) INDEPENDENT TRAFFIC PROCEEDS AT SOME DISTANCE FROM SHORE, CONSISTS ONLY OF SHIPS OVER 15 KNOTS. NO INDEPENDENT TRAFFIC CLOSE TO COAST.

4) ON COASTAL LANE AIR AND SURFACE DEFENSE ONLY WITH CONVOYS, EXCEPT IN AREA AROUND MAIN HARBOR GREEN TZ 95 ((PROBABLY #EU 45: MONROVIA)). THERE STRONG NIGHT AIR ((DETECTED)) ON NAXOS AND BORKUM; ONE A/C RUN WITH STAR SHELLS WITHOUT ORTUNG.

5) BESIDES CONVOYS ALREADY REPORTED, ON 13/2 SAW SOUTH-BOUND CONVOY GREEN EZ 9373 ((PROBABLY #EK 4373: 15.15N - 17.51W)); ON 14/2 HEARD HYDROPHONE

((PAGE TWO OF THREE))


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0143/1/352/137	223	MOVB OXRU	SERIES 3
((CONTINUED))

NORTHBOUND CONVOY GREEN TN 9987 ((PROBABLY #EK 4987: 13.15N - 17.45W)) SIGHTED ONLY A/C.

D/F

03.00N - 01.00W (U2-33) CASE 01/10/09XX

TOI 0236Z 6795 KCS


			1150/1 APR

((PAGE THREE OF THREE))


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

0507/1/253	17	MLPQ TTQC	SERIES 3

TO:	SEEHAUSEN ((66))

HEAD FOR AREA OF STUDT ((488)); MORE FOLLOWS.


			0907/1 APR


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

1023/1/358	13	OGIR VSZJ	SERIES 3

TO:	SEEHAUSEN ((66))

WELL DONE.

COMINCH


			1535/1 APR


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

1031/1/360	64	DMBV FZJN	SERIES 3

SEEHAUSEN ((66)) HAS SUNK THE FOLLOWING:

1) 26/2 IN EV 7154 ((04.39N - 03.21W)) 1 STEAMER 5000 TONS AND SILVER MAPLE' OUT OF EASTBOUND CONVOY, SPEED 7.5.

2) 1/3 INDEPENDENT WITH ESCORT, EASTBOUND, SPEED 8, IN EV 5877 ((05.09N - 00.03W)).

(CONTINUED) ((IN 1037/1)).


			1591/1 APR


	1 APRIL 1944	TOP SECRET ULTRA	MBL V

1037/1/359	83	LLFK MSCU	SERIES 3

((CONTINUED FROM 1091/1))

3) 5/3 IN 8427 ((03.57N - 07.27E)) 'JOHN HOLT' 4975 TONS (3RD ERSATZ-BAU*), ESTBOUND, ZAGGING SHARPLY.

4) 21/3 IN EW 7123 ((05.09N - 04.57E)) TANKER 8400 TONS, TYPE BRITISH CONFIDENCE, NORTHWESTERLY COURSE, ZAGGING SHARPLY, ESCORTED BY 4 S-BOATS, ONE WITH RED LIGHT.

*SEE 0036/1 APRIL, PARA 1, AND NOTE.


			1530/1 APR


	1 APR 1944	TOP SECRET ULTRA	RP EJC

2339/1/386	23	EQUE JBMP	SERIES 3

FROM:	SO 3RD U-FLOT

TO:	SEEHAUSEN ((66))

HEARTY CONGRATULATIONS ON THE FINE RESULTS.


			2300/2


	2 APR 1944	TOP SECRET ULTRA	RP EJC

0127/2/370/63/7	274	LFZR VWZZ	SERIES 3

FROM:

SEEHAUSEN ((66))

SITUATION IN OP AREA:

1) BETWEEN MAIN PORTS IN #73 ((PROBABLY EV 73: TAKORADI)) AND #65 ((PROBABLY EV 65: LAGOS)) OF THE LARGE SQ WEST* OF GREEN TZ ((PROBABLY #EU)) ESSENTIALLY ONLY CONVOY TRAFFIC. IRREGULAR, RUNNING ALONG THE 200 METER LINE.

2) INDEPENDENT TRAFFIC NOW GREATLY SCATTERED. ((ACCOMPANIED)) CLOSE TO COAST BY SMALL FAST SEA ESCORT WITHOUT AIR; REMOVED FROM COAST BY DAT AIR, AND AT NIGHT SINGLE SEA ESCORTS.

3) ON THE 200 METER LINE RECCE AT NOON BY WELLINGTON. UP TO A DISTANCE OF 150 MILES MEDIUM DAY AIR, WELLINGTON AND BRIGHT ((HELLE)) LERVICK.

4) FROM MAIN PORT #65 ((PROBABLY EV 65: LAGOS)) SE AROUND QUAY IN BLUE ZF 22 ((PROBABLY EW 86: DUALA)) MODERATE ESCORTED AND UNESCORTED INDEPENDENT TRAFFIC, NO AIR. OUTBOUND COURSE 115 TO THE 200 METER LINE, THEN ALONG AROUND THE CAPE. INBOUND 310 DEGREES FROM BLUE JN 2120 ((PROBABLY EW 7120-XX 04.57N - 04.51E 'A')).

5) AFTER BEING NOTICED TRAFFIC WAS STOPPED UP TO 14 DAYS IN THE AREA NAMED.

- - PAGE 1 OF 2 - -

- - PAGE 2 OF 2 - -


	2 APR 1944	HUSH SECRET	RP EJC

0129/2/370	274	LFZR VWZZ	SERIES 3

FROM:

SEEHAUSEN ((66))

6) AFTER LAST SINKING 2 SEARCH GROUPS WERE SEEN. BY DAY 4 T-BOATS, AT NIGHT ESCORT ((S)) GIVING OFF A GREAT DEAL OF SMOKE, WITH A/C, BOTH EQUIPPED WITH NAXOS AND COMPLETELY INEXPERIENCED; ALSO CONVOYS BEING DIVERTED TO SOUTHWARD. ON THE WHOLE DEFENSE IS NOT STRENGTHENED RESOLUTELY ENOUGH.

7) IN MAIN PORT IN #65 ((PROBABLY EV 65: LAGOS)) THERE ARE UP TO 6 SHIPS WEEKLY.

8) #'S ARE ALL IN LARGE SQ WEST OF GREEN TZ ((PROBABLY #EU)).

* PROBABLY 'EAST'; REFER TO 0143A/1 APRIL.

D/F

04.00N - 02.30W (U1-41) CASE 02.10/05


	TOI 0222Z	6800 KCS	2915/2


	2 APR 1944	TOP SECRET ULTRA	RP EJC

1043/2/378/8	20	ADAS GDAW	SERIES 3

TO:	SEEHAUSEN ((66))

COMINCH WAS PLEASED ABOUT YOUR CLEAR SITUATION REPORT.


			2210/2


	4 APR 1944	TOP SECRET ULTRA	RP V

1916/4/107	75	TKAP UROS	SERIES 1

REPETITION FOR STOCK ((214))

((SINKINGS BY SEEHAUSEN (66)); PREV TRANSLATED IN 1031/1 AND 1037/1 APR)).

(CONTINUED) ((IN 1925/4)).


			1915/5


	4 APR 1944	TOP SECRET ULTRA	RP V

1925/4/108	79	VMFL LFYK	SERIES 1

(CONTINUED FROM 1916/4)

((REPETITION FOR STOCK ((214)) OF 1037/1 APRIL.

SEEHAUSEN'S ((66)) SUCCESSES))


			1935/5


	4 APRIL 1944	TOP SECRET ULTRA	MBL V

2054/4/311	119	FGBU EFEG	SERIES 3

TO:	SEEHAUSEN ((66))

1) DECIPHER MSG 'SCHIRM' AS FOLLOWS:

A) OFFIZIER MSG KEY TO BE FORMED FROM FOLLOWING LETTERS:

IST LETTER OF FAMILY NAME OF OB STRM WITH YEAR OF ENTRY 36.

5TH LETTER OF FAMILY NAME OF 2ND WO.

4TH LETTER OF FAMILY NAME OF 1ST WO.

LAST LETTER OF FAMILY NAME OF STR NR 510/40.

B) ADD THE FOLLOWING NO TO OFFIZIER STECKER CONNECTIONS:

3RD DIGIT OF STR NR OF MASCHMAAT SCHOLZ.

DESTROY THIS MSG AFTER NOTING CONTENTS.


			2200/5 APR


	5 APRIL 1944	TOP SECRET ULTRA	MBL V

1901/5/328	36	WVBV QURQ	SERIES 3

MSGS FROM SEEHAUSEN ((66)) WERE RECEIVED BETWEEN 0300B AND 0400B WITH VERY GOOD SIGNAL STRENGTH ON AMERICA 2D (FREQUENCY P1).


			2323/6


	8 APR 1944	TOP SECRET ULTRA	RP EJC

1524/8/498/170/369 95		QOQN HJSJ	SERIES 4

- - OFFIZIER P - -

1) HARPE ((129)), SEEHAUSEN ((66)), HENKE ((515)), SCHREWE ((537)), LAUZEMIS ((68)) HEAD FOR BLUE PN 00 ((POSSIBLY DS 50: 22.39N, 32.03W 'C')) FOR REFUELLING FROM STUDT ((488)). STUDT AND SPAHR ((178)) HEAD FOR SAME PLACE.

2) SEEHAUSEN WILL REFUEL FOR ECONOMICAL RETURN, OTHER SUBS FILL UP TO CAPACITY. SPHAR WILL RECEIVE ONLY NAXOS AND BORKUM.

3) REFUELING OF HARPE ON ABOUT THE 16TH. PRECISE ORDER FOR ALL SUBS WILL FOLLOW IN GOOD TIME.


			0433/9


	9 APRIL 1944	TOP SECRET ULTRA	EM EJC

0857/9/379	42	MAFD GQVK	SERIES 3

TO:	SEEHAUSEN ((66))

TO BE DECIPHERED ONLY BY COMMANDING OFFICER

- - - OFFIZIER W - - -

REPORT WHETHER YOU CONCUR IN SUGGESTING KNIGHT'S CROSS FOR LEITENDEN ING ((ENGINEER OFFICER)) AND OBERSTEURMANN ((WARRANT QUARTERMASTER)).


			118/12


	9 APRIL 1944	TOP SECRET ULTRA	EM EHB

1046/9/382/186/412 33		QLYI XRSW	SERIES 1 & 3

IN MSG 1524/8/170/369/498 UNDER 2) PUT SEEHAUSEN ((66)) INSTEAD OF LAUZEMIS ((66))