Hi Pavel
Just after the war HMSO(UK's Govt Publishers) produced a 3 Vol book "Royal Air Force 1939-45" written by Denis Richards and Hilary St George Saunders and published in 1954. The Alsterufer is dealt with on p70/71 of Vol 3.The book records that the ship was first spotted by a Sunderland of 201 Sqn,T. During the morning Alsterufer came under attack by 2 more Sunderlands ,one,Q,of 422 Sqn RCAF and the other,U, of 201 these attacks were not conclusive and at 1607, what is described as "the mortal blow" was struck by Liberator,H, of 311(Czech)Sqn.The ship took 4 hrs to sink and her end was hastened by 2 more Liberators of 86 Sqn. There is no mention of FAA a/c at all and the only RN vessels referred to are the cruisers,Glasgow and Enterprise that intercepted and put to flight German destroyers sent to Alsterufer's aid. The extract does not gives a/c serials or crew names other than Piatek the captain of the Alsterufer
I Googled Alsterufer Sinking and got www.ibiblio.org/hyperwar/UN/UK/UK.../UK-RAF-III-3.html which seems to have the whole book available to read online, this link starts at Chapter III vol3
Regards
Dick
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