DORTMUND
37 Whitleys; poor bombing owing to industrial haze. No losses.
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18 aircraft - 12 Blenheims, 4 Wellingtons, 2 Stirlings - operated on enemy coasts. Ships were attacked off Dunkirk, The Hague and Terschelling but without sure sinkings. 2 Blenheims and 2 Wellingtons lost.
