Well, from what I can find right now initial deployment of the B-24 was March 1941 (as a transport), with Bomber Command using the Liberator II in 1942. Sometime after March 1941 Coastal Command received some for ASW patrol.
SOOOOOOO....I'd say B-24s shouldn't show up at Wilhelmshaven before 1942.
This site
http://www.worldwar-2.net/timelines/...index-1940.htm
has a good chronology of attacks. From what I can find on the RAF official website, Hampdens, Wellingtons, Whitleys and Blenheims were used to carry out these raids. Interestingly, the RAF attempted to bomb Scharnhorst at Kiel on July 2/3 1940....maybe you could model that?
I was also trying to find any evidence the Red Air Force bombed German ports. I know they had lend-lease Hurricanes, among other aircraft, that we could add-in if there was evidence this ever occurred.
As always, if there's anything I can do to assist, you have my email
