617 SQUADRON OPERATIONS RECORD BOOK 617
Squadron's summary of the Dams Raid identified the Moehne, Eder and Sorpe dams as "primary targets", and Lister, Ennepe (mistyped as Ennerpe) and Diemel as "alternative targets". Third Wave aircraft were briefed to attack the latter three, but would only do so after receiving "direct orders in the air". Otherwise, they were to proceed to the Moehne and Eder dams. The positions and numbers of flak guns at the Moehne are slightly inaccurate, but two "successful attacks" there — by Young and Maltby -- and on the Eder by Shannon and Knight — are confirmed. Ottley's loss near Hamm is wrongly attributed to Young and Rice's Upkeep did not explode as believed.