Codewords
A code system was devised in order to relay messages back to Harris, Cochrane and Wallis at 5 group operations room at Grantham.
A release of Upkeep would be signalled by the prefix Goner followed by a number indicating what had happened after the release of the weapon.
| Goner 1 |
failed to explode |
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| Goner 2 |
overshot dam |
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| Goner 3 |
exploded more than 100 yards from dam |
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| Goner 4 |
exploded 100 yards from dam |
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| Goner 5 |
exploded 50 yards from dam |
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| Goner 6 |
exploded 5 yards from dam |
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| Goner 7 |
exploded on contact with dam |
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| Goner 8 |
no breach made |
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| Goner 9 |
small breach made in dam |
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| Goner 10 |
large breach made in dam |
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After Goner and the appropriate number, a letter was added to signify which dam had been attcked:
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A = Mohne
B = Eder
C = Sorpe
D = Lister
E = Ennepe
F = Diemel
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For example: a message Goner 79A would mean: weapon released at the Mohne dam, exploded on contact with the dam and caused a small breach.
NIGGER - indicated a breach in the Mohne dam and instructed the remaining aircraft with mines to attack the Eder dam.
DINGHY - indicated a breach in the Eder dam and instructed the remaining aircraft with mines to attack the Sorpe dam.
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