Paul, maybe these show it a little more clearly. My understanding is that this was done to smooth out some turbulent flow at speed which was causing some potentially damaging vibration in the hull plating. Kevin, have you come across any dimensional data or plan drawings of this configuration?
George "Crazy Ivan" Protchenko
“There are the assassins, the dealers in death; I am the Avenger!”-Nemo
"I'm disinclined to acquiesce to your request; means No!"-Capt.Barbossa