Derek Pullem
Donor
It's an interesting intellectual exercise. Of course, any invasion by it's very nature would be noticed by the build up of barges and ships. Lets assume the Germans get their ships back from France, joining Tirpitz to make 3BB, 2 PB and 2 CA's as a squadron.
Home Fleet in February 1942:
BB King George V, Duke of York, Malaya
BC Renown
CV Victorious, Argus
CA Norfolk, Suffolk, Kent, London, Berwick, Cumberland
This does not include large numbers of ships transferred East in February 1942, or ships under refit or repair.
The Twins are BB???
Surely BC