Gunther Hessler in his three volume account "The U-boat war in the Atlantic 1939-1945" written for the Admiralty post WW2 mentions the Do335. This is late on and in connection with an essential air recce for the Type XXI U-boats that were coming into operations in May 1945. He describes it as overflying the UK at 430/470mph at night presumably with a view to arriving at the convoy routes approaching north and south of Eire and further out. in daylight to assist observation Whether Goering had agreed to this is academic but he failed to provide adequate ship recce services through most of the war. I have seen reference to the Do335 having an AI radar. Was there a serious proposal for a surface search radar in substitution? Also given it was single seat (apart from a trainer) is there a view on how effective it might have been? The pilot would have had an enormous task flying, navigating, spotting, monitoring the radar, reporting back accurately and avoiding interception. Were any other single-seaters successful in such a role? (Confession - I am not an air buff and had never heard of the Do335 until I noted it in Hessler's book)