TheCodeBreakers
current ones. Atlantis, however, had aboard in her special crew a wireless
operator named Wesemann who had served for three years in one of the
German cryptanalytic services. Wesemann achieved what might be the
first nautical cryptanalysis on record when, on the basis of the captured
code and several merchant messages that he had intercepted, he
succeeded in reconstructing about one third of the superencipherment
table then in use. As a result, Atlantis could read much of the Allied
merchantmen's traffic and could await her victims at likely spots.
When the tables were changed, Wesemann partially reconstructed the
new ones with the help of some messages found in the wastebasket of
the radio shack of another captured vessel, Benarty. The work was
completed for him by the B-Dienst, which deduced from his radio queries
that he had obtained the BAMS code and consequently sent him the
interpretations he needed. Since Atlantis and Berlin were then almost at
annaabi.ee 
