Schroeder Message
Schroeder´s war diaryThis is the second break of the M4 Project:
Ciphertext (stripped of indicator groups):
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TMKFNWZXFFIIYXUTIHWMDHXIFZEQVKDVMQSWBQNDYOZFTIWMJHXHYRPACZUGRREMVPANWXGTKTHNRLVHKZPGMNMVSECVCKHOINPLHHPVPXKMBHOKCCPDPEVXVVHOZZQBIYIEOUSEZNHJKWHYDAGTXDJDJKJPKCSDSUZTQCXJDVLPAMGQKKSHPHVKSVPCBUWZFIZPFUUP |
Plaintext (as seen in the server logs):
Date: 2006-03-07 10:03:23
Score: 5211199
UKW: B
W/0: B241
Stecker: ATCLDHEPFGIOJNKQMURX
Rings: AANV
Message key: MCSF
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VVVJSCHREEDERJAUFGELEITKURSFUENFFUENFGRADNICHTSGEFUNDENYMARSCAIEREBEFOHLENESQUADRATXSTANRORTMARQUANTONJOTADREINEUNNEUNFUENFXSSSOOOVIERYSEEDREMYEINSNULYYEINSNULBEDECKTYZWOACHTMBSTEIGTYNBBELSICHTEINSSMT |
The plaintext of the message appears in the war diary of U623, which can be found at NARA, Microfilm Publication T1022, Roll 3385.
0425 Ausgang FT. 0246/21/203:
Auf Geleitkurs 55° nichts gefunden, marschie-
re befohlenes Qu. Standort Marqu. AJ 3995.
SO 4, See 3, 10/10 bedeckt, 28 mb steigend,
Nebel, Sicht 1 sm.
Schroeder
Translation:
0425 Outgoing Radio Signal 0246/21/203:
Found nothing on convoy's course 55°, [I am] moving to
the ordered [naval] square. Position naval square AJ 3995.
[wind] south-east [force] 4, sea [state] 3, 10/10 cloudy,
[barometer] [10]28 mb [tendency] rising, fog, visibility 1 nautical mile.
Schroeder
Explanation:
0246/21/203: time/date/message serial number
AJ 3995: German naval grid reference, 56-33 N, 37-36 W
Schroeder Hermann Schröder, Oberleutnant zur See on U623