I miss stated the alt of the Mitchells , It was 9 to 10 thousand feet.. And ah bombers hitting ships from that alt. happens on a regular basis. The premise of the B-17 design was not strategic bombing, but coastal defense. In theory a large bomber could attack ships from 7000 to 8000 feet, but the Navy didn't like the Air Corps plan & It didn't work anyway . The bomber performance and accuracy in this game far exceeds what actual planes could do. I have known that for 5 years. I still play and knock them down when they fly 5000 feet above their service ceilings while still carrying a full bomb load. I sink a lot of ships with 2 engine bombers, but I do it the way It was really done. low level. Perhaps AH can include a Fritz X or like weapon for those who wish actually treat Ah 3 like a simulator. If You Research bomber attack on shipping You will find that if it was not low level most all were failed missions. A good place to start would be the B17 attacks on IJN ships during the Battle of Midway and The Battle of Milne Bay. Anyway Have a blast.