>>Eskimo, can you cite some cases ? What type and and altitude ?
I'd like to read up on it.<<
Flying Bucaneers, author's name escapes me right now. It is about the fifth air force during WW2. They did a lot of innovation with the a/c they had, much of it was outdated stuff. They created strafing B25s, skip bombing techniques, para frags and much more. They also had B17s and B24s do low level skip bombing against shipping and airfields. At no point did I read any account of dive bombing by four engine bombers.