
Ok ,i have found the problem

Oh ! My god !
This problem of shadows came, when I load a backup recorded in the port, inside the bunker !
So the problem was not from AO or normals in the conning tower in it even
But,How the light is used in the bunker ! Amazing !
Edit :
So this is what I was saying that the light outside, influenced the inside of the submarine., It will really find a solution for the lights (adds / controls / modifications)
@Tomy : Use "MentalRay" in the render setup->common->assign renderer and save the AO as DXT1 or DXT5 without alpha

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